[GRASS-SVN] r57752 - sandbox/turek/scatter_plot

svn_grass at osgeo.org svn_grass at osgeo.org
Thu Sep 19 14:06:28 PDT 2013


Author: turek
Date: 2013-09-19 14:06:27 -0700 (Thu, 19 Sep 2013)
New Revision: 57752

Modified:
   sandbox/turek/scatter_plot/testing_patch.diff
Log:
scatter plot:various improvemnts

Modified: sandbox/turek/scatter_plot/testing_patch.diff
===================================================================
--- sandbox/turek/scatter_plot/testing_patch.diff	2013-09-19 12:53:28 UTC (rev 57751)
+++ sandbox/turek/scatter_plot/testing_patch.diff	2013-09-19 21:06:27 UTC (rev 57752)
@@ -1,6 +1,1305 @@
+Index: lib/imagery/scatt_sccats.c
+===================================================================
+--- lib/imagery/scatt_sccats.c	(revision 0)
++++ lib/imagery/scatt_sccats.c	(working copy)
+@@ -0,0 +1,405 @@
++/*!
++   \file lib/imagery/scatt_cat_rast.c
++
++   \brief Imagery library - functions for manipulation with scatter plot structs.
++
++   Copyright (C) 2013 by the GRASS Development Team
++
++   This program is free software under the GNU General Public License
++   (>=v2).  Read the file COPYING that comes with GRASS for details.
++
++   \author Stepan Turek <stepan.turek at seznam.cz> (Mentor: Martin Landa)
++ */
++
++#include <grass/raster.h>
++#include <grass/imagery.h>
++#include <grass/gis.h>
++
++#include <stdio.h>
++#include <stdlib.h>
++#include <math.h>
++#include <string.h>
++
++/*!
++   \brief Compute band ids from scatter plot id.
++
++    Scatter plot id describes which bands defines the scatter plot.
++
++    Let say we have 3 bands, their ids are 0, 1 and 2.
++    Scatter plot with id 0 consists of band 1 (b_1_id) 0 and  band 2 (b_2_id) 1.
++    All scatter plots:
++    scatt_id b_1_id b_2_id
++    0        0      1
++    1        0      2
++    2        1      2
++
++   \param scatt_id scatter plot id
++   \param n_bands number of bands
++   \param [out] b_1_id id of band1
++   \param[out] b_2_id id of band2
++
++   \return 0
++ */
++int I_id_scatt_to_bands(const int scatt_id, const int n_bands, int * b_1_id, int * b_2_id)
++{   
++    int n_b1 = n_bands - 1;
++
++    * b_1_id = (int) ((2 * n_b1 + 1 - sqrt((double)((2 * n_b1 + 1) * (2 * n_b1 + 1) - 8 * scatt_id))) / 2);
++
++    * b_2_id = scatt_id - ((* b_1_id) * (2 * n_b1 + 1) - (* b_1_id) * (* b_1_id)) / 2 + (* b_1_id) + 1;
++
++    return 0;
++}
++
++
++/*!
++   \brief Compute scatter plot id from band ids.
++
++    See also I_id_scatt_to_bands().
++
++   \param n_bands number of bands
++   \param b_1_id id of band1
++   \param b_1_id id of band2
++   \param [out] scatt_id scatter plot id
++
++   \return 0
++ */
++int I_bands_to_id_scatt(const int b_1_id, const int b_2_id, const int n_bands, int * scatt_id)
++{   
++    int n_b1 = n_bands - 1;
++
++    * scatt_id = (b_1_id * (2 * n_b1 + 1) - b_1_id * b_1_id) / 2 + b_2_id - b_1_id - 1;
++
++    return 0;
++}
++
++/*!
++   \brief Initialize structure for storing scatter plots data.
++
++   \param cats pointer to scCats struct 
++   \param n_bands number of bands
++   \param type SC_SCATT_DATA - stores scatter plots 
++   \param type SC_SCATT_CONDITIONS - stores selected areas in scatter plots
++ */
++void I_sc_init_cats(struct scCats * cats, int n_bands, int type)
++{
++    int i_cat;
++
++    cats->type = type;
++
++    cats->n_cats = 100;
++    cats->n_a_cats = 0;
++
++    cats->n_bands = n_bands;
++    cats->n_scatts = (n_bands - 1) * n_bands / 2;
++
++    cats->cats_arr = (struct scScatts **) G_malloc(cats->n_cats * sizeof(struct scScatts *));
++    memset(cats->cats_arr, 0, cats-> n_cats * sizeof(struct scScatts *));
++
++    cats->cats_ids = (int *)  G_malloc(cats->n_cats * sizeof(int));
++    cats->cats_idxs =(int *)  G_malloc(cats->n_cats * sizeof(int));
++
++    for(i_cat = 0; i_cat < cats->n_cats; i_cat++)
++        cats->cats_idxs[i_cat] = -1;
++
++    return;
++}
++
++/*!
++   \brief Free data of struct scCats, the structure itself remains alocated.
++
++   \param cats pointer to existing scCats struct
++ */
++void I_sc_free_cats(struct scCats * cats)
++{
++    int i_cat;
++
++    for(i_cat = 0; i_cat < cats->n_a_cats; i_cat++)
++    {        
++        if(cats->cats_arr[i_cat])
++        {   
++            G_free(cats->cats_arr[i_cat]->scatt_idxs);
++            G_free(cats->cats_arr[i_cat]->scatts_bands);
++            G_free(cats->cats_arr[i_cat]->scatts_arr);
++            G_free(cats->cats_arr[i_cat]);
++        }
++    }
++
++    G_free(cats->cats_ids);
++    G_free(cats->cats_idxs);
++    G_free(cats->cats_arr);
++
++    cats->n_cats = 0;
++    cats->n_a_cats = 0;
++    cats->n_bands = 0;
++    cats->n_scatts = 0;
++    cats->type = -1;
++
++    return;
++}
++
++#if 0
++void I_sc_get_active_categories(int * a_cats_ids, int * n_a_cats, struct scCats * cats)
++{
++    a_cats_ids = cats->cats_ids;
++    * n_a_cats = cats->n_a_cats;
++}
++#endif
++
++/*!
++   \brief Add category.
++    
++    Category represents group of scatter plots.
++
++   \param cats pointer to scCats struct
++
++   \return assigned category id (starts with 0)
++   \return -1 if maximum nuber of categories was reached
++ */
++int I_sc_add_cat(struct scCats * cats)
++{
++    int i_scatt, i_cat_id, cat_id;
++    int n_a_cats = cats->n_a_cats;
++
++    if(cats->n_a_cats >= cats->n_cats)
++        return -1;
++
++    for(i_cat_id = 0; i_cat_id < cats->n_cats; i_cat_id++)
++        if(cats->cats_idxs[i_cat_id] < 0) {
++            cat_id = i_cat_id;
++            break;
++        }
++
++    cats->cats_ids[n_a_cats] = cat_id;
++    cats->cats_idxs[cat_id] = n_a_cats;
++    
++    cats->cats_arr[n_a_cats] = (struct scScatts *) G_malloc(sizeof(struct scScatts));
++
++    cats->cats_arr[n_a_cats]->scatts_arr = (struct scdScattData **) G_malloc(cats->n_scatts * sizeof(struct scdScattData *));
++    memset((cats->cats_arr[n_a_cats]->scatts_arr), 0, cats->n_scatts * sizeof(struct scdScattData *));
++    
++    cats->cats_arr[n_a_cats]->n_a_scatts = 0;
++
++    cats->cats_arr[n_a_cats]->scatts_bands = (int *) G_malloc(cats->n_scatts * 2 * sizeof(int));
++     
++    cats->cats_arr[n_a_cats]->scatt_idxs = (int *) G_malloc(cats->n_scatts * sizeof(int));
++    for(i_scatt = 0; i_scatt < cats->n_scatts; i_scatt++)
++        cats->cats_arr[n_a_cats]->scatt_idxs[i_scatt] = -1;
++    
++    ++cats->n_a_cats;
++
++    return cat_id;
++}
++
++#if 0
++int I_sc_delete_cat(struct scCats * cats, int cat_id)
++{
++    int cat_idx, i_cat;
++
++    if(cat_id < 0 || cat_id >= cats->n_cats)
++        return -1;
++
++    cat_idx = cats->cats_idxs[cat_id];
++    if(cat_idx < 0)
++        return -1;
++
++    G_free(cats->cats_arr[cat_idx]->scatt_idxs);
++    G_free(cats->cats_arr[cat_idx]->scatts_bands);
++    G_free(cats->cats_arr[cat_idx]->scatts_arr);
++    G_free(cats->cats_arr[cat_idx]);
++
++    for(i_cat = cat_idx; i_cat < cats->n_a_cats - 1; i_cat++)
++    {
++        cats->cats_arr[i_cat] = cats->cats_arr[i_cat + 1];
++        cats->cats_ids[i_cat] = cats->cats_ids[i_cat + 1];
++    }
++    cats->cats_idxs[cat_id] = -1; 
++
++    --cats->n_a_cats;
++    
++    return 0;
++}
++#endif
++
++/*!
++   \brief Insert scatter plot data .
++    Inserted scatt_data struct must have same type as cats struct (SC_SCATT_DATA or SC_SCATT_CONDITIONS).
++
++   \param cats pointer to scCats struct
++   \param cat_id id number of category.
++   \param scatt_id id number of scatter plot.
++
++   \return  0 on success
++   \return -1 on failure
++ */
++int I_sc_insert_scatt_data(struct scCats * cats, struct scdScattData * scatt_data, int cat_id, int scatt_id)
++{
++    int band_1, band_2, cat_idx, n_a_scatts;
++    struct scScatts * scatts;
++
++    if(cat_id < 0 || cat_id >= cats->n_cats)
++        return -1;
++
++    cat_idx = cats->cats_idxs[cat_id];
++    if(cat_idx < 0)
++        return -1;
++
++    if(scatt_id < 0 && scatt_id >= cats->n_scatts)
++        return -1;
++
++    scatts = cats->cats_arr[cat_idx];
++    if(scatts->scatt_idxs[scatt_id] >= 0)
++        return -1;
++
++    if(!scatt_data->b_conds_arr && cats->type == SC_SCATT_CONDITIONS)
++        return -1;
++
++    if(!scatt_data->scatt_vals_arr && cats->type == SC_SCATT_DATA)
++        return -1;
++
++    n_a_scatts = scatts->n_a_scatts;
++
++    scatts->scatt_idxs[scatt_id] = n_a_scatts;
++
++    I_id_scatt_to_bands(scatt_id, cats->n_bands, &band_1, &band_2);
++
++    scatts->scatts_bands[n_a_scatts * 2] = band_1;
++    scatts->scatts_bands[n_a_scatts * 2 + 1] = band_2;
++
++    scatts->scatts_arr[n_a_scatts] = scatt_data;
++    ++scatts->n_a_scatts;
++
++    return 0;
++}
++
++#if 0
++int I_sc_remove_scatt_data(struct scCats * cats, struct scdScattData * scatt_data, int cat_id, int scatt_id)
++{
++    int cat_idx, scatt_idx, n_init_scatts, i_scatt;
++    struct scScatts * scatts;
++
++    if(cat_id < 0 && cat_id >= cats->n_cats)
++        return -1;
++
++    cat_idx = cats->cats_idxs[cat_id];
++    if(cat_idx < 0)
++        return -1;
++
++    if(scatt_id < 0 || scatt_id >= cats->n_scatts)
++        return -1;
++
++    scatts = cats->cats_arr[cat_idx];
++    if(scatts->scatt_idxs[scatt_id] < 0)
++        return -1;
++
++    scatt_data = scatts->scatts_arr[scatt_idx];
++
++    for(i_scatt = scatt_idx; i_scatt < scatts->n_a_scatts - 1; i_scatt++)
++    {
++        scatts->scatts_arr[i_scatt] = scatts->scatts_arr[i_scatt + 1];
++        scatts->scatts_bands[i_scatt * 2] = scatts->scatts_bands[(i_scatt + 1)* 2];
++        scatts->scatts_bands[i_scatt * 2 + 1] = scatts->scatts_bands[(i_scatt + 1) * 2 + 1];
++    }
++    scatts->scatts_arr[scatts->n_a_scatts] = NULL;
++
++    scatts->scatt_idxs[scatt_id] = -1;
++
++    scatt_data = scatts->scatts_arr[scatt_id];
++    scatts->n_a_scatts--;
++
++    return 0;
++}
++
++int I_sc_set_value(struct scCats * cats, int cat_id, int scatt_id, int value_idx, int value)
++{
++    int n_a_scatts = cats->cats_arr[cat_id]->n_a_scatts;
++    int cat_idx, scatt_idx, ret;
++
++    cat_idx = cats->cats_idxs[cat_id];
++    if(cat_idx < 0)
++        return -1;
++    
++    if(cats->cats_arr[cat_idx]->scatt_idxs[scatt_id] < 0)
++        return -1;
++
++    cat_idx = cats->cats_idxs[cat_id];
++    scatt_idx = cats->cats_arr[cat_idx]->scatt_idxs[scatt_id];
++
++    I_scd_set_value(cats->cats_arr[cat_idx]->scatts_arr[scatt_idx], value_idx, value);
++
++    return 0;
++}
++#endif
++
++/*!
++   \brief Insert scatter plot data.
++    
++   \param scatt_data pointer to existing struct scdScattData
++   \param type SC_SCATT_DATA for scatter plots or SC_SCATT_CONDITIONS for selected areas in scatter plot
++   \param n_vals number of data values
++   \param data array of values (unsigned char for SC_SCATT_CONDITIONS, unsigned int for SC_SCATT_DATA)
++ */
++void I_scd_init_scatt_data(struct scdScattData * scatt_data, int type, int n_vals, void * data)
++{
++    scatt_data->n_vals = n_vals;
++
++    if(type == SC_SCATT_DATA)
++    {   
++        if(data)
++            scatt_data->scatt_vals_arr = (unsigned int *) data;
++        else {
++            scatt_data->scatt_vals_arr = (unsigned int *) G_malloc(n_vals * sizeof(unsigned int));
++            memset(scatt_data->scatt_vals_arr, 0, n_vals * sizeof(unsigned int)); 
++        }
++        scatt_data->b_conds_arr = NULL;
++    }
++    else if(type == SC_SCATT_CONDITIONS)
++    {
++        if(data)
++            scatt_data->b_conds_arr = (unsigned char *) data;
++        else {
++            scatt_data->b_conds_arr = (unsigned char *) G_malloc(n_vals * sizeof(unsigned char));
++            memset(scatt_data->b_conds_arr, 0, n_vals * sizeof(unsigned char));
++        }
++        scatt_data->scatt_vals_arr = NULL;
++    }
++
++    return;
++}
++
++
++#if 0
++void I_scd_get_range_min_max(struct scdScattData * scatt_data, CELL * band_1_min, CELL * band_1_max, CELL * band_2_min, CELL * band_2_max)
++{
++
++    Rast_get_range_min_max(&(scatt_data->band_1_range), band_1_min, band_2_min);
++    Rast_get_range_min_max(&(scatt_data->band_2_range), band_2_min, band_2_max);
++
++    return;
++}
++s
++void * I_scd_get_data_ptr(struct scdScattData * scatt_data)
++{
++    if(!scatt_data->b_conds_arr)
++        return scatt_data->b_conds_arr;
++    else if(!scatt_data->scatt_vals_arr)
++        return scatt_data->scatt_vals_arr;
++
++    return NULL;
++}
++
++int I_scd_set_value(struct scdScattData * scatt_data, unsigned int val_idx, unsigned int val)
++{
++    if(val_idx < 0 && val_idx >  scatt_data->n_vals)
++        return -1;
++
++    if(scatt_data->b_conds_arr)
++        scatt_data->b_conds_arr[val_idx] = val;
++    else if(scatt_data->scatt_vals_arr)
++        scatt_data->scatt_vals_arr[val_idx] = val;
++    else
++        return -1;
++
++    return 0;
++}
++#endif
+Index: lib/imagery/scatt.c
+===================================================================
+--- lib/imagery/scatt.c	(revision 0)
++++ lib/imagery/scatt.c	(working copy)
+@@ -0,0 +1,871 @@
++/*!
++   \file lib/imagery/scatt.c
++
++   \brief Imagery library - functions for wx Scatter Plot Tool.
++
++   Low level functions used by wx Scatter Plot Tool.
++
++   Copyright (C) 2013 by the GRASS Development Team
++
++   This program is free software under the GNU General Public License
++   (>=v2).  Read the file COPYING that comes with GRASS for details.
++
++   \author Stepan Turek <stepan.turek at seznam.cz> (Mentor: Martin Landa)
++ */
++#include <stdio.h>
++#include <stdlib.h>
++#include <math.h>
++#include <string.h>
++
++#include <grass/gis.h>
++#include <grass/vector.h>
++#include <grass/raster.h>
++#include <grass/imagery.h>
++#include <grass/glocale.h>
++
++#include "iclass_local_proto.h"
++
++struct rast_row
++{
++    CELL * row;
++    char * null_row;
++    struct Range rast_range; /*Range of whole raster.*/
++};
++
++/*!
++   \brief Create pgm header.
++
++   Scatter plot internally generates pgm files. These pgms have header in format created by this function.
++    
++   \param region region to be pgm header generated for 
++   \param [out] header header of pgm file
++ */
++static int get_cat_rast_header(struct Cell_head * region, char * header){
++    return sprintf(header, "P5\n%d\n%d\n1\n", region->cols, region->rows);
++}
++
++/*!
++   \brief Create category raster conditions file.
++    
++   \param cat_rast_region region to be file generated for
++   \param cat_rast path of generated category raster file
++ */
++int I_create_cat_rast(struct Cell_head * cat_rast_region,  const char * cat_rast)
++{
++    FILE * f_cat_rast;
++    char cat_rast_header[1024];//TODO magic number 
++    int i_row, i_col;
++    int head_nchars;
++
++    unsigned char * row_data;
++
++    f_cat_rast = fopen(cat_rast, "wb");
++    if(!f_cat_rast) {
++        G_warning("Unable to create category raster condition file <%s>.", cat_rast);
++        return -1;
++    }
++
++    head_nchars = get_cat_rast_header(cat_rast_region, cat_rast_header);
++
++    fwrite(cat_rast_header, sizeof(char), head_nchars/sizeof(char), f_cat_rast);
++    if (ferror(f_cat_rast)){
++        fclose(f_cat_rast);
++        G_warning(_("Unable to write header into category raster condition file <%s>."), cat_rast);
++        return -1;
++    }
++
++    row_data = (unsigned char *) G_malloc(cat_rast_region->cols * sizeof(unsigned char));
++    for(i_col = 0; i_col < cat_rast_region->cols; i_col++)
++        row_data[i_col] = 0 & 255;
++
++    for(i_row = 0; i_row < cat_rast_region->rows; i_row++) {
++        fwrite(row_data, sizeof(unsigned char), (cat_rast_region->cols)/sizeof(unsigned char), f_cat_rast);
++        if (ferror(f_cat_rast))
++        {
++            fclose(f_cat_rast);
++            G_warning(_("Unable to write into category raster condition file <%s>."), cat_rast);
++            return -1;
++        }
++    }
++
++    fclose(f_cat_rast);
++    return 0;
++}
++
++static int print_reg(struct Cell_head * intersec, const char * pref, int dbg_level)
++{
++    G_debug(dbg_level, "%s:\n n:%f\ns:%f\ne:%f\nw:%f\nns_res:%f\new_res:%f", pref, intersec->north, intersec->south, 
++               intersec->east, intersec->west, intersec->ns_res, intersec->ew_res);
++}
++
++/*!
++   \brief Find intersection region of two regions.
++
++   \param A pointer to intersected region
++   \param B pointer to intersected region
++   \param [out] intersec pointer to intersection region of regions A B (relevant params of the region are: south, north, east, west)
++
++   \return  0 if interection exists
++   \return -1 if regions does not intersect
++ */
++static int regions_intersecion(struct Cell_head * A, struct Cell_head * B, struct Cell_head * intersec)
++{
++
++    if(B->north < A->south) return -1;
++    else if(B->north > A->north) intersec->north = A->north;
++    else intersec->north = B->north;
++
++    if(B->south > A->north) return -1;
++    else if(B->south < A->south) intersec->south = A->south;
++    else intersec->south = B->south;
++
++    if(B->east < A->west) return -1;
++    else if(B->east > A->east) intersec->east = A->east;
++    else intersec->east = B->east;
++
++    if(B->west > A->east) return -1;
++    else if(B->west < A->west) intersec->west = A->west;
++    else intersec->west = B->west;
++
++    if(intersec->north == intersec->south) return -1;
++
++    if(intersec->east == intersec->west) return -1;
++
++    return 0;
++
++}
++
++/*!
++   \brief Get rows and cols numbers, which defines intersection of the regions.
++  
++   \param A pointer to intersected region
++   \param B pointer to intersected region (A and B must have same resolution)
++   \param [out] A_bounds rows and cols numbers of A stored in south, north, east, west, which defines intersection of A and B
++   \param [out] B_bounds rows and cols numbers of B stored in south, north, east, west, which defines intersection of A and B
++
++   \return  0 if interection exists
++   \return -1 if regions do not intersect
++   \return -2 resolution of regions is not same 
++*/
++static int get_rows_and_cols_bounds(struct Cell_head * A,  struct Cell_head * B, struct Cell_head * A_bounds,  struct Cell_head * B_bounds)
++{
++    float ns_res, ew_res;
++
++    struct Cell_head intersec;
++
++    /* TODO is it right check? */
++    if(abs(A->ns_res - B->ns_res) > GRASS_EPSILON) {
++        G_debug(0, "'get_rows_and_cols_bounds' ns_res does not fit, A->ns_res: %f B->ns_res: %f", A->ns_res, B->ns_res);
++        return -2;
++    }
++
++    if(abs(A->ew_res - B->ew_res) > GRASS_EPSILON) {
++        G_debug(0, "'get_rows_and_cols_bounds' ew_res does not fit, A->ew_res: %f B->ew_res: %f", A->ew_res, B->ew_res);
++        return -2;
++    }
++
++    ns_res = A->ns_res;
++    ew_res = A->ew_res;
++
++    if(regions_intersecion(A, B, &intersec) == -1)
++        return -1;
++
++    A_bounds->north = ceil((A->north - intersec.north - ns_res * 0.5) / ns_res);
++    A_bounds->south = ceil((A->north - intersec.south - ns_res * 0.5) / ns_res);
++
++    A_bounds->east = ceil((intersec.east - A->west - ew_res * 0.5) / ew_res);
++    A_bounds->west = ceil((intersec.west - A->west - ew_res * 0.5) / ew_res);
++
++    B_bounds->north = ceil((B->north - intersec.north - ns_res * 0.5) / ns_res);
++    B_bounds->south = ceil((B->north - intersec.south - ns_res * 0.5) / ns_res);
++
++    B_bounds->east = ceil((intersec.east - B->west - ew_res * 0.5) / ew_res);
++    B_bounds->west = ceil((intersec.west - B->west - ew_res * 0.5) / ew_res);
++
++    return 0;
++}
++
++/*!
++   \brief Insert raster map patch into pgm file.
++    Warning: calls Rast_set_window
++
++   \param patch_rast name of raster map
++   \param cat_rast_region region of category raster file
++   \param cat_rast path to category raster file
++
++   \return  0 on success
++   \return -1 on failure
++*/
++int I_insert_patch_to_cat_rast(const char * patch_rast, struct Cell_head * cat_rast_region,  const char * cat_rast)
++{
++
++    FILE * f_cat_rast;
++    struct Cell_head patch_region, patch_bounds, cat_rast_bounds;
++    char cat_rast_header[1024];//TODO magic number 
++    int i_row, i_col, ncols, nrows, cat_rast_col, patch_col, val;
++    int head_nchars, ret;
++    int fd_patch_rast, init_shift, step_shift;
++    unsigned char * patch_data;
++
++    char * null_chunk_row;
++
++    const char *mapset;
++
++    struct Cell_head patch_lines, cat_rast_lines;
++
++    unsigned char * row_data;
++
++    f_cat_rast = fopen(cat_rast, "rb+");
++    if(!f_cat_rast) {
++        G_warning(_("Unable to open category raster condtions file <%s>."), cat_rast);
++        return -1;
++    }
++
++    head_nchars = get_cat_rast_header(cat_rast_region, cat_rast_header);
++    if ((mapset = G_find_raster(patch_rast,"")) == NULL) {
++        fclose(f_cat_rast);
++        G_warning(_("Unable to find patch raster <%s>."), patch_rast);
++        return -1;
++    }
++
++    Rast_get_cellhd(patch_rast, mapset, &patch_region);
++    Rast_set_window(&patch_region);
++            
++    if ((fd_patch_rast = Rast_open_old(patch_rast, mapset)) < 0) {
++        fclose(f_cat_rast);
++        return -1;
++    }
++
++    ret = get_rows_and_cols_bounds(cat_rast_region, &patch_region, &cat_rast_bounds, &patch_bounds);
++    if(ret == -2) { 
++        G_warning(_("Resolutions of patch <%s> and patched file <%s> are not same."), patch_rast, cat_rast);
++
++        Rast_close(fd_patch_rast);
++        fclose(f_cat_rast);
++
++        return -1;
++    }
++    else if (ret == -1){
++
++        Rast_close(fd_patch_rast);
++        fclose(f_cat_rast);
++
++        return 0;
++    }
++
++    ncols = cat_rast_bounds.east - cat_rast_bounds.west;
++    nrows = cat_rast_bounds.south - cat_rast_bounds.north;
++
++    patch_data = (unsigned char *) G_malloc(ncols * sizeof(unsigned char));
++
++    init_shift = head_nchars + cat_rast_region->cols * cat_rast_bounds.north + cat_rast_bounds.west;
++
++    if(fseek(f_cat_rast, init_shift, SEEK_SET) != 0) {
++        G_warning(_("Corrupted  category raster conditions file <%s> (fseek failed)"), cat_rast);
++
++        Rast_close(fd_patch_rast);
++        G_free(null_chunk_row);
++        fclose(f_cat_rast);
++
++        return -1;
++    }
++
++    step_shift = cat_rast_region->cols - ncols;
++
++    null_chunk_row =  Rast_allocate_null_buf();
++    
++    for(i_row = 0; i_row < nrows; i_row++) {
++        Rast_get_null_value_row (fd_patch_rast, null_chunk_row, i_row + patch_bounds.north);
++
++        for(i_col = 0; i_col < ncols; i_col++) {
++            patch_col = patch_bounds.west + i_col;
++
++            if(null_chunk_row[patch_col] != 1) 
++                patch_data[i_col] = 1 & 255;
++            else {
++                patch_data[i_col] = 0 & 255;
++            }
++        }
++
++        fwrite(patch_data, sizeof(unsigned char), (ncols)/sizeof(unsigned char), f_cat_rast);
++        if (ferror(f_cat_rast))
++        {
++            G_warning(_("Unable to write into category raster conditions file <%s>"), cat_rast);
++            
++            Rast_close(fd_patch_rast);
++            G_free(null_chunk_row);
++            fclose(f_cat_rast);
++
++            return -1;
++        }
++        if(fseek(f_cat_rast, step_shift, SEEK_CUR) != 0) {
++            G_warning(_("Corrupted  category raster conditions file <%s> (fseek failed)"), cat_rast);
++            
++            Rast_close(fd_patch_rast);
++            G_free(null_chunk_row);
++            fclose(f_cat_rast);
++            
++            return -1;
++        }
++    }
++
++    Rast_close(fd_patch_rast);
++    G_free(null_chunk_row);
++    fclose(f_cat_rast);
++    return 0;
++}
++
++/*!
++   \brief Updates scatter plots data in category by pixels which meets category conditions.
++  
++   \param bands_rows data represents data describig one row from raster band
++   \param belongs_pix array which defines which pixels belongs to category (1 value) and which not (0 value)
++   \param [out] scatts pointer to scScatts struct of type SC_SCATT_DATA, which are modified according to values in belongs_pix
++*/
++static inline void update_cat_scatt_plts(struct rast_row * bands_rows, unsigned short * belongs_pix, struct scScatts * scatts)
++{
++    int band_axis_1, band_axis_2, i_scatt, array_idx, cat_idx, i_chunk_rows_pix, max_arr_idx;
++
++    CELL * b_1_row;
++    CELL * b_2_row;
++    char * b_1_null_row,* b_2_null_row;
++    struct rast_row b_1_rast_row, b_2_rast_row;
++
++    struct Range b_1_range, b_2_range;
++    int b_1_range_size;
++
++    int row_size = Rast_window_cols();
++
++    int * scatts_bands = scatts->scatts_bands;
++
++    for(i_scatt = 0; i_scatt < scatts->n_a_scatts; i_scatt++)
++    {   
++        b_1_rast_row = bands_rows[scatts_bands[i_scatt * 2]];
++        b_2_rast_row = bands_rows[scatts_bands[i_scatt * 2 + 1]];
++
++        b_1_row = b_1_rast_row.row;
++        b_2_row = b_2_rast_row.row;
++
++        b_1_null_row =  b_1_rast_row.null_row;
++        b_2_null_row =  b_2_rast_row.null_row;
++
++        b_1_range = b_1_rast_row.rast_range;
++        b_2_range = b_2_rast_row.rast_range;
++        
++        b_1_range_size = b_1_range.max - b_1_range.min + 1;
++        max_arr_idx = (b_1_range.max -  b_1_range.min + 1) * (b_2_range.max -  b_2_range.min + 1);
++
++        for(i_chunk_rows_pix = 0; i_chunk_rows_pix < row_size; i_chunk_rows_pix++)
++        {
++            /* pixel does not belongs to scatter plot or has null value in one of the bands */
++            if(!belongs_pix[i_chunk_rows_pix] || 
++                b_1_null_row[i_chunk_rows_pix] == 1 || 
++                b_2_null_row[i_chunk_rows_pix] == 1)                
++                continue;
++
++            /* index in scatter plot array */
++            array_idx = b_1_row[i_chunk_rows_pix] - b_1_range.min + (b_2_row[i_chunk_rows_pix] - b_2_range.min) * b_1_range_size;
++
++            if(array_idx < 0 || array_idx >= max_arr_idx) {
++                        G_warning ("Data inconsistent. Value computed for scatter plot is out of initialized range.");
++                continue;
++            }
++
++            /* increment scatter plot value */
++            ++scatts->scatts_arr[i_scatt]->scatt_vals_arr[array_idx];
++        }
++    }
++}
++
++/*!
++   \brief Computes scatter plots data from chunk_rows.
++
++   \param scatts pointer to scScatts struct of type SC_SCATT_DATA, where are computed scatter plots stored
++   \param scatt_conds pointer to scScatts struct of type SC_SCATT_CONDITIONS, where are selected areas (condtitions)stored
++
++   \param chunk_rows data arrays of chunk_rows from analyzed raster bands (all data in chunk_rows, null_chunk_rows and belongs_pix arrays represents same region)
++   \param null_chunk_rows null data arrays of chunk_rows from analyzed raster bands
++   \param row_size size of data in chunk_rows, null_chunk_rows and belongs_pix arrays
++   \param f_cats_rasts_conds file which stores selected areas (conditions) from mapwindow see I_create_cat_rast() and I_pa
++   \param fd_cats_rasts array of openedraster maps which represents all selected pixels for category
++   \param region analysis region
++
++   \return  0 on success
++   \return -1 on failure
++*/
++static inline int compute_scatts_from_chunk_row(struct Cell_head *region, struct scCats * scatt_conds, 
++                                                FILE ** f_cats_rasts_conds, struct rast_row * bands_rows, 
++                                                struct scCats * scatts, int * fd_cats_rasts)
++{
++
++    int i_rows_pix, i_cat, i_scatt, n_a_scatts, n_pixs;
++    int cat_id, scatt_plts_cat_idx, array_idx, max_arr_idx;
++    char * b_1_null_row,* b_2_null_row;
++    struct rast_row b_1_rast_row, b_2_rast_row;
++    CELL * cat_rast_row;
++
++    struct scScatts * scatts_conds;
++    struct scScatts * scatts_scatt_plts;
++    struct scdScattData * conds;
++
++    struct Range b_1_range, b_2_range;
++    int b_1_range_size;
++
++    int * scatts_bands;
++    struct scdScattData ** scatts_arr;
++
++    CELL * b_1_row;
++    CELL * b_2_row;
++    unsigned char * i_scatt_conds;
++
++    int row_size = Rast_window_cols();
++
++    unsigned short * belongs_pix = (unsigned short *) G_malloc(row_size * sizeof(unsigned short)); 
++    unsigned char * rast_pixs = (unsigned char *) G_malloc(row_size * sizeof(unsigned char));
++    cat_rast_row =  Rast_allocate_c_buf();
++
++     
++    for(i_cat = 0; i_cat < scatt_conds->n_a_cats; i_cat++)
++    {
++        scatts_conds = scatt_conds->cats_arr[i_cat];
++
++        cat_id = scatt_conds->cats_ids[i_cat];
++
++        scatt_plts_cat_idx = scatts->cats_idxs[cat_id];
++        if(scatt_plts_cat_idx < 0)
++            continue;
++        scatts_scatt_plts = scatts->cats_arr[scatt_plts_cat_idx];
++
++        G_zero(belongs_pix, row_size * sizeof(unsigned short));
++
++        /* if category has no conditions defined, scatter plots without any constraint are computed (default scatter plots) */
++        if(!scatts_conds->n_a_scatts && !f_cats_rasts_conds[i_cat]) {
++            for(i_scatt = 0; i_scatt < scatts_scatt_plts->n_a_scatts; i_scatt++)
++            {       
++                /* all pixels belongs */
++                for(i_rows_pix = 0; i_rows_pix < row_size; i_rows_pix++)                
++                    belongs_pix[i_rows_pix] = 1;
++            }
++        }
++        /* compute belonging pixels for defined conditions */
++        else
++        {
++            scatts_bands = scatts_conds->scatts_bands;
++
++            /* check conditions from category raster condtitions file */
++            if(f_cats_rasts_conds[i_cat]) {
++                n_pixs = fread(rast_pixs, sizeof(unsigned char), (row_size)/sizeof(unsigned char), f_cats_rasts_conds[i_cat]);
++
++                if (ferror(f_cats_rasts_conds[i_cat]))
++                {
++                    G_free(rast_pixs);
++                    G_free(belongs_pix);
++                    G_warning(_("Unable to read from category raster condtition file."));
++                    return -1;
++                }
++                if (n_pixs != n_pixs) {
++                    G_free(rast_pixs);
++                    G_free(belongs_pix);
++                    G_warning(_("Invalid size of category raster conditions file."));
++                    return -1;
++
++                }
++
++                for(i_rows_pix = 0; i_rows_pix < row_size; i_rows_pix++)
++                {
++                    if(rast_pixs[i_rows_pix] != 0 & 255)
++                        belongs_pix[i_rows_pix] = 1;
++                }
++            }
++
++            /* check condtions defined in scatter plots*/
++            for(i_scatt = 0; i_scatt < scatts_conds->n_a_scatts; i_scatt++)
++            {   
++                b_1_rast_row = bands_rows[scatts_bands[i_scatt * 2]];
++                b_2_rast_row = bands_rows[scatts_bands[i_scatt * 2 + 1]];
++
++                b_1_row = b_1_rast_row.row;
++                b_2_row = b_2_rast_row.row;
++
++                b_1_null_row =  b_1_rast_row.null_row;
++                b_2_null_row =  b_2_rast_row.null_row;
++
++                b_1_range = b_1_rast_row.rast_range;
++                b_2_range = b_2_rast_row.rast_range;
++
++                b_1_range_size = b_1_range.max - b_1_range.min + 1;
++                max_arr_idx = (b_1_range.max -  b_1_range.min + 1) * (b_2_range.max -  b_2_range.min + 1);
++
++                i_scatt_conds = scatts_conds->scatts_arr[i_scatt]->b_conds_arr;
++
++                for(i_rows_pix = 0; i_rows_pix < row_size; i_rows_pix++)
++                {
++                    /* pixels already belongs to category from category raster conditions file or contains null value in one of the bands */
++                    if(belongs_pix[i_rows_pix] || 
++                       b_1_null_row[i_rows_pix] == 1 || 
++                       b_2_null_row[i_rows_pix] == 1)
++                        continue;
++
++                    array_idx = b_1_row[i_rows_pix] - b_1_range.min + (b_2_row[i_rows_pix] - b_2_range.min) * b_1_range_size;
++                    if(array_idx < 0 || array_idx >= max_arr_idx) {
++                        G_warning ("Data inconsistent. Value computed for scatter plot is out of initialized range.");
++                        continue;
++                    }
++                    /* pixels meets condtion defined in scatter plot */
++                    if(i_scatt_conds[array_idx])
++                        belongs_pix[i_rows_pix] = 1;
++                }                
++            }
++        }
++
++        /* update category raster with belonging pixels */
++        if(fd_cats_rasts[i_cat] >= 0) {
++            Rast_set_null_value(cat_rast_row, Rast_window_cols(), CELL_TYPE); 
++
++            for(i_rows_pix = 0; i_rows_pix < row_size; i_rows_pix++)
++                if(belongs_pix[i_rows_pix])
++                    cat_rast_row[i_rows_pix] = belongs_pix[i_rows_pix];
++
++            Rast_put_c_row (fd_cats_rasts[i_cat], cat_rast_row); 
++        }
++
++        /* update scatter plots with belonging pixels */
++        update_cat_scatt_plts(bands_rows, belongs_pix, scatts_scatt_plts);
++    }
++
++    G_free(cat_rast_row);
++    G_free(rast_pixs);
++    G_free(belongs_pix);
++
++    return 0;
++}
++
++/*!
++   \brief Get list if bands needed to be opened for analysis from scCats struct.
++*/
++static void get_needed_bands(struct scCats * cats, int * b_needed_bands)
++{
++    // results in b_needed_bands - array of bools - if item has value 1, band (defined by item index) is needed to be opened
++    int i_cat, i_scatt, cat_id;
++
++    for(i_cat = 0;  i_cat < cats->n_a_cats; i_cat++)
++    {   
++        for(i_scatt = 0;  i_scatt < cats->cats_arr[i_cat]->n_a_scatts; i_scatt++)
++        {   
++            G_debug(3, "Active scatt %d in catt %d", i_scatt, i_cat);
++
++            b_needed_bands[cats->cats_arr[i_cat]->scatts_bands[i_scatt * 2]] = 1;
++            b_needed_bands[cats->cats_arr[i_cat]->scatts_bands[i_scatt * 2 + 1]] = 1;
++        }
++    }
++    return;
++}
++
++/*!
++   \brief Helper function for clean up.
++*/
++static void free_compute_scatts_data(int * fd_bands, struct rast_row * bands_rows, int n_a_bands, int * bands_ids, 
++                                     int * fd_cats_rasts, FILE ** f_cats_rasts_conds, int n_a_cats)
++{
++    int i, band_id;
++
++    for(i = 0; i < n_a_bands; i++)
++    {   
++        band_id = bands_ids[i];
++        if(band_id >= 0) {
++            Rast_close(fd_bands[i]);
++            G_free(bands_rows[band_id].row);
++            G_free(bands_rows[band_id].null_row);
++        }
++    }
++     
++    if(f_cats_rasts_conds)
++        for(i = 0; i < n_a_cats; i++)
++            if(f_cats_rasts_conds[i])
++                fclose(f_cats_rasts_conds[i]);
++
++    if(fd_cats_rasts)
++        for(i = 0; i < n_a_cats; i++)
++            if(fd_cats_rasts[i] >= 0)
++                Rast_close(fd_cats_rasts[i]);
++
++}
++
++/*!
++   \brief Compute scatter plots data.
++
++    If category has not defined no category raster condition file and no scatter plot with consdtion,
++    default scatter plot is computed.
++    Warning: calls Rast_set_window
++
++   \param region analysis region, beaware that all input data must be prepared for this region (bands (their ranges), cats_rasts_conds rasters...)
++   \param region function calls Rast_set_window for this region
++   \param scatt_conds pointer to scScatts struct of type SC_SCATT_CONDITIONS, where are stored selected areas (conditions) in scatter plots
++   \param cats_rasts_conds paths to category raster conditions files representing selected areas (conditions) in rasters for every category 
++   \param cats_rasts_conds index in array represents corresponding category id
++   \param cats_rasts_conds for manupulation with category raster conditions file see also I_id_scatt_to_bands() and I_insert_patch_to_cat_rast()
++   \param bands names of analyzed bands, order of bands is defined by their id
++   \param n_bands number of bands
++   \param [out] scatts pointer to scScatts struct of type SC_SCATT_DATA, where are computed scatter plots stored
++   \param [out] cats_rasts array of raster maps names where will be stored all selected pixels for every category
++
++   \return  0 on success
++   \return -1 on failure
++*/
++int I_compute_scatts(struct Cell_head *region, struct scCats * scatt_conds, const char ** cats_rasts_conds,
++                     const char ** bands, int n_bands, struct scCats * scatts, const char ** cats_rasts) 
++{
++    const char *mapset;
++    char header[1024];
++
++    int fd_cats_rasts[scatt_conds->n_a_cats];
++    FILE * f_cats_rasts_conds[scatt_conds->n_a_cats];
++
++    struct rast_row bands_rows[n_bands];
++
++    RASTER_MAP_TYPE data_type;
++
++    int nrows, i_band, n_a_bands, band_id, 
++        i, i_row, head_nchars, i_cat, id_cat;
++   
++    int fd_bands[n_bands];
++    int bands_ids[n_bands];
++    int b_needed_bands[n_bands];  
++
++    Rast_set_window(region);
++
++    for(i_band = 0; i_band < n_bands; i_band++)
++        fd_bands[i_band] = -1;
++    
++    for(i_band = 0; i_band < n_bands; i_band++)
++        bands_ids[i_band] = -1;
++
++    if (n_bands != scatts->n_bands ||
++        n_bands != scatt_conds->n_bands)
++        return -1;
++
++    memset(b_needed_bands, 0, (size_t)n_bands * sizeof(int));
++
++    get_needed_bands(scatt_conds, &b_needed_bands[0]);
++    get_needed_bands(scatts, &b_needed_bands[0]);
++
++    n_a_bands = 0;
++
++    /* open band rasters, which are needed for computation */
++    for(band_id = 0; band_id < n_bands; band_id++)
++    {
++        if(b_needed_bands[band_id])
++        {
++            G_debug(3, "Opening raster no. %d with name: %s", band_id, bands[band_id]);
++
++            if ((mapset = G_find_raster2(bands[band_id],"")) == NULL) {
++                free_compute_scatts_data(fd_bands, bands_rows, n_a_bands, 
++                                         bands_ids, NULL, NULL, scatt_conds->n_a_cats);
++                G_warning(_("Unbale to read find raster <%s>"), bands[band_id]);
++                return -1;
++            }
++            
++            if ((fd_bands[n_a_bands] = Rast_open_old(bands[band_id], mapset)) < 0) {
++                free_compute_scatts_data(fd_bands, bands_rows, n_a_bands, 
++                                         bands_ids, NULL, NULL, scatt_conds->n_a_cats);
++                G_warning(_("Unbale to open raster <%s>"), bands[band_id]);
++                return -1;
++            }
++
++            data_type = Rast_get_map_type(fd_bands[n_a_bands]);
++            if(data_type != CELL_TYPE) {
++                G_warning(_("Raster <%s> type is not <%s>"), bands[band_id], "CELL");
++                return -1;
++            }
++
++            bands_rows[band_id].row =  Rast_allocate_c_buf();
++            bands_rows[band_id].null_row =  Rast_allocate_null_buf();
++
++            if(Rast_read_range(bands[band_id], mapset, &bands_rows[band_id].rast_range) != 1){
++                free_compute_scatts_data(fd_bands, bands_rows, n_a_bands, 
++                                         bands_ids, NULL, NULL, scatt_conds->n_a_cats);
++                G_warning(_("Unable to read range of raster <%s>"), bands[band_id]);
++                return -1;
++            }      
++
++            bands_ids[n_a_bands] = band_id;
++            ++n_a_bands;
++        }
++    }
++
++    /* open category rasters condition files and category rasters */
++    for(i_cat = 0; i_cat < scatts->n_a_cats; i_cat++)
++    {
++        id_cat = scatts->cats_ids[i_cat];
++        if(cats_rasts[id_cat]) {
++            fd_cats_rasts[i_cat] = Rast_open_new(cats_rasts[id_cat], CELL_TYPE);   
++        }
++        else
++            fd_cats_rasts[i_cat] = -1;
++
++        if(cats_rasts_conds[id_cat]) {
++            f_cats_rasts_conds[i_cat] = fopen(cats_rasts_conds[id_cat], "r");
++            if(!f_cats_rasts_conds[i_cat]) {
++                free_compute_scatts_data(fd_bands, bands_rows, n_a_bands, bands_ids, 
++                                         f_cats_rasts_conds, f_cats_rasts_conds, scatt_conds->n_a_cats);
++                G_warning(_("Unable to open category raster condtition file <%s>"), bands[band_id]);
++                return -1;
++            }
++        }
++        else
++            f_cats_rasts_conds[i_cat] = NULL;
++    }
++
++    head_nchars =  get_cat_rast_header(region, header);
++    for(i_cat = 0; i_cat < scatt_conds->n_a_cats; i_cat++)
++        if(f_cats_rasts_conds[i_cat])
++            if( fseek(f_cats_rasts_conds[i_cat] , head_nchars, SEEK_SET) != 0) {
++                G_warning(_("Corrupted category raster conditions file (fseek failed)"));
++                return -1;
++            }
++
++    nrows = Rast_window_rows();
++
++    /* analyze bands by rows */
++    for (i_row = 0; i_row < nrows; i_row++)
++    {
++        for(i_band = 0; i_band < n_a_bands; i_band++)
++        {   
++            band_id = bands_ids[i_band];
++            Rast_get_c_row(fd_bands[i_band], bands_rows[band_id].row, i_row);
++            Rast_get_null_value_row (fd_bands[i_band], bands_rows[band_id].null_row, i_row);
++        }
++        if(compute_scatts_from_chunk_row(region, scatt_conds, f_cats_rasts_conds, bands_rows, scatts, fd_cats_rasts) == -1) 
++        {
++            free_compute_scatts_data(fd_bands, bands_rows, n_a_bands, bands_ids, fd_cats_rasts, 
++                                     f_cats_rasts_conds, scatt_conds->n_a_cats);
++            return -1;
++        }
++ 
++    }
++    free_compute_scatts_data(fd_bands, bands_rows, n_a_bands, bands_ids, 
++                             fd_cats_rasts, f_cats_rasts_conds, scatt_conds->n_a_cats); 
++    return 0;    
++}
++
++/*!
++   \brief Merge arrays according to opacity.
++    Every pixel in array must be represented by 4 values (RGBA). 
++    
++
++   \param merged_arr array which will be overlayd with overlay_arr
++   \param overlay_arr array to be merged_arr overlayed with
++   \param rows number of rows for the both arrays
++   \param cols number of columns for the both arrays
++   \param alpha transparency of the overlay array for merging
++
++   \return  0
++*/
++int I_merge_arrays(unsigned char *  merged_arr, unsigned char *  overlay_arr, unsigned rows, unsigned cols, double alpha)
++{
++    unsigned int i_row, i_col, i_b;
++    unsigned int row_idx, col_idx, idx;
++    unsigned int c_a_i, c_a;
++
++    for(i_row = 0; i_row < rows; i_row++)
++    {
++        row_idx = i_row * cols;
++        for(i_col = 0; i_col < cols; i_col++)
++        {
++                col_idx = 4 * (row_idx + i_col);
++                idx = col_idx + 3;
++
++                c_a = overlay_arr[idx] * alpha;
++                c_a_i = 255 - c_a;
++
++                merged_arr[idx] = (c_a_i * (int)merged_arr[idx] + c_a * 255) / 255;
++                
++                for(i_b = 0; i_b < 3; i_b++)
++                {
++                    idx = col_idx + i_b;
++                    merged_arr[idx] = (c_a_i * (int)merged_arr[idx] + c_a * (int)overlay_arr[idx]) / 255;
++                }
++        }
++    }
++    return 0; 
++}
++
++
++int I_apply_colormap(unsigned char * vals, unsigned char * vals_mask, unsigned vals_size, unsigned char * colmap, unsigned char * col_vals){
++    unsigned int i_val;
++    int v, i, i_cm;
++
++    for(i_val = 0; i_val < vals_size; i_val++){
++        i_cm = 4 * i_val;
++
++        v = vals[i_val];
++
++        if(vals_mask && vals_mask[i_val])
++            for(i = 0; i < 4; i++) col_vals[i_cm + i] = colmap[258 * 4 + i];
++        else if(v > 255)
++            for(i = 0; i < 4; i++) col_vals[i_cm + i] = colmap[257 * 4 + i];
++        else if(v < 0)
++            for(i = 0; i < 4; i++) col_vals[i_cm + i] = colmap[256 * 4 + i];
++        else
++            for(i = 0; i < 4; i++){ col_vals[i_cm + i] = colmap[v * 4 + i];
++        }
++    }
++    return 0;
++}
++
++
++int I_rasterize(double * polygon, int pol_n_pts, unsigned char * rast, unsigned char val, struct Cell_head *rast_region){
++    int i;
++    int x0, x1, y;
++    int row, row_idx, i_col;
++
++    IClass_perimeter perimeter;
++
++    struct line_pnts *pol; 
++    pol = Vect_new_line_struct();
++
++    for(i = 0; i < pol_n_pts; i++) {
++        Vect_append_point(pol,
++                          polygon[i*2], 
++                          polygon[i*2 + 1], 
++                          0.0);
++    }
++
++    Rast_set_window(rast_region);
++
++    make_perimeter(pol, &perimeter, rast_region);
++    for (i = 1; i < perimeter.npoints; i += 2) {
++        y = perimeter.points[i].y;
++        if (y != perimeter.points[i - 1].y) {
++            G_warning(_("prepare_signature: scan line %d has odd number of points."),
++                  (i + 1) / 2);
++            return 1;
++        }
++
++        x0 = perimeter.points[i - 1].x;
++        x1 = perimeter.points[i].x;
++
++        if (x0 > x1) {
++            G_warning(_("signature: perimeter points out of order."));
++            return 1;
++        }
++
++        row = (rast_region->rows - y);
++        if(row < 0 || row >= rast_region->rows) {
++            continue;
++        }
++
++        row_idx = rast_region->cols * row;
++
++        for(i_col = x0; i_col <= x1; i_col++) {
++            if(i_col < 0 || i_col >= rast_region->cols) {
++                continue;
++            }
++            rast[row_idx + i_col] = val;
++        }
++    }
++
++    Vect_destroy_line_struct(pol); 
++    G_free(perimeter.points);  
++    return 0;
++}
+Index: include/defs/vedit.h
+===================================================================
+--- include/defs/vedit.h	(revision 57747)
++++ include/defs/vedit.h	(working copy)
+@@ -33,6 +33,8 @@
+ int Vedit_merge_lines(struct Map_info *, struct ilist *);
+ 
+ /* move.c */
++int Vedit_move_areas(struct Map_info *, struct Map_info **, int,
++		     		 struct ilist *, double, double, double, int, double);
+ int Vedit_move_lines(struct Map_info *, struct Map_info **, int,
+ 		     struct ilist *, double, double, double, int, double);
+ 
 Index: include/defs/imagery.h
 ===================================================================
---- include/defs/imagery.h	(revision 57734)
+--- include/defs/imagery.h	(revision 57747)
 +++ include/defs/imagery.h	(working copy)
 @@ -111,6 +111,28 @@
  FILE *I_fopen_subgroup_ref_new(const char *, const char *);
@@ -31,22 +1330,9 @@
  /* sig.c */
  int I_init_signatures(struct Signature *, int);
  int I_new_signature(struct Signature *);
-Index: include/defs/vedit.h
-===================================================================
---- include/defs/vedit.h	(revision 57734)
-+++ include/defs/vedit.h	(working copy)
-@@ -33,6 +33,8 @@
- int Vedit_merge_lines(struct Map_info *, struct ilist *);
- 
- /* move.c */
-+int Vedit_move_areas(struct Map_info *, struct Map_info **, int,
-+		     		 struct ilist *, double, double, double, int, double);
- int Vedit_move_lines(struct Map_info *, struct Map_info **, int,
- 		     struct ilist *, double, double, double, int, double);
- 
 Index: include/imagery.h
 ===================================================================
---- include/imagery.h	(revision 57734)
+--- include/imagery.h	(revision 57747)
 +++ include/imagery.h	(working copy)
 @@ -135,6 +135,56 @@
      
@@ -105,9 +1391,573 @@
  #define SIGNATURE_TYPE_MIXED 1
  
  #define GROUPFILE "CURGROUP"
+Index: gui/icons/grass/polygon.png
+===================================================================
+Cannot display: file marked as a binary type.
+svn:mime-type = application/octet-stream
+Index: gui/icons/grass/polygon.png
+===================================================================
+--- gui/icons/grass/polygon.png	(revision 57747)
++++ gui/icons/grass/polygon.png	(working copy)
+
+Property changes on: gui/icons/grass/polygon.png
+___________________________________________________________________
+Added: svn:mime-type
+## -0,0 +1 ##
++application/octet-stream
+\ No newline at end of property
+Index: gui/wxpython/vdigit/wxdigit.py
+===================================================================
+--- gui/wxpython/vdigit/wxdigit.py	(revision 57747)
++++ gui/wxpython/vdigit/wxdigit.py	(working copy)
+@@ -17,7 +17,7 @@
+ (and NumPy would be an excellent candidate for acceleration via
+ e.g. OpenCL or CUDA; I'm surprised it hasn't happened already).
+ 
+-(C) 2007-2011 by the GRASS Development Team
++(C) 2007-2011, 2013 by the GRASS Development Team
+ 
+ This program is free software under the GNU General Public License
+ (>=v2). Read the file COPYING that comes with GRASS for details.
+@@ -27,6 +27,8 @@
+ 
+ import grass.script.core as grass
+ 
++from grass.pydispatch.signal import Signal
++
+ from core.gcmd        import GError
+ from core.debug       import Debug
+ from core.settings    import UserSettings
+@@ -176,7 +178,21 @@
+         
+         if self.poMapInfo:
+             self.InitCats()
+-        
++
++        self.emit_signals = False
++
++        # signals which describes features changes during digitization, 
++        # activate them using EmitSignals method 
++        #TODO signal for errors?
++        self.featureAdded = Signal('IVDigit.featureAdded')
++        self.areasDeleted = Signal('IVDigit.areasDeleted')
++        self.vertexMoved = Signal('IVDigit.vertexMoved')
++        self.vertexAdded = Signal('IVDigit.vertexAdded')
++        self.vertexRemoved = Signal('IVDigit.vertexRemoved')
++        self.featuresDeleted = Signal('IVDigit.featuresDeleted')
++        self.featuresMoved = Signal('IVDigit.featuresMoved')
++        self.lineEdited = Signal('IVDigit.lineEdited')
++
+     def __del__(self):
+         Debug.msg(1, "IVDigit.__del__()")
+         Vect_destroy_line_struct(self.poPoints)
+@@ -188,7 +204,12 @@
+             Vect_close(self.poBgMapInfo)
+             self.poBgMapInfo = self.popoBgMapInfo = None
+             del self.bgMapInfo
+-        
++     
++    def EmitSignals(self, emit):
++        """!Activate/deactivate signals which describes features changes during digitization.
++        """
++        self.emit_signals = emit
++
+     def CloseBackgroundMap(self):
+         """!Close background vector map"""
+         if not self.poBgMapInfo:
+@@ -394,7 +415,6 @@
+         
+         @return tuple (number of added features, feature ids)
+         """
+-        
+         layer = self._getNewFeaturesLayer()
+         cat = self._getNewFeaturesCat()
+         
+@@ -419,10 +439,14 @@
+             return (-1, None)
+         
+         self.toolbar.EnableUndo()
+-        
+-        return self._addFeature(vtype, points, layer, cat,
+-                                self._getSnapMode(), self._display.GetThreshold())
+-    
++
++        ret = self._addFeature(vtype, points, layer, cat,
++                               self._getSnapMode(), self._display.GetThreshold())
++        if ret[0] > -1 and self.emit_signals:
++            self.featureAdded.emit(new_bboxs = [self._createBbox(points)], new_areas_cats = [[{layer : [cat]}, None]])
++
++        return ret
++
+     def DeleteSelectedLines(self):
+         """!Delete selected features
+ 
+@@ -434,16 +458,27 @@
+         # collect categories for deleting if requested
+         deleteRec = UserSettings.Get(group = 'vdigit', key = 'delRecord', subkey = 'enabled')
+         catDict = dict()
++
++        old_bboxs = []
++        old_areas_cats = []
+         if deleteRec:
+             for i in self._display.selected['ids']:
++                
+                 if Vect_read_line(self.poMapInfo, None, self.poCats, i) < 0:
+                     self._error.ReadLine(i)
+                 
+-                cats = self.poCats.contents
+-                for j in range(cats.n_cats):
+-                    if cats.field[j] not in catDict.keys():
+-                        catDict[cats.field[j]] = list()
+-                    catDict[cats.field[j]].append(cats.cat[j])
++                if self.emit_signals:
++                    ret = self._getLineAreaBboxCats(i)
++                    if ret:
++                        old_bboxs += ret[0]
++                        old_areas_cats += ret[1]
++                
++                # catDict was not used -> put into comment
++                #cats = self.poCats.contents
++                #for j in range(cats.n_cats):
++                #    if cats.field[j] not in catDict.keys():
++                #        catDict[cats.field[j]] = list()
++                #    catDict[cats.field[j]].append(cats.cat[j])
+         
+         poList = self._display.GetSelectedIList()
+         nlines = Vedit_delete_lines(self.poMapInfo, poList)
+@@ -456,7 +491,10 @@
+                 self._deleteRecords(catDict)
+             self._addChangeset()
+             self.toolbar.EnableUndo()
+-        
++
++            if self.emit_signals:
++                self.featuresDeleted.emit(old_bboxs = old_bboxs, old_areas_cats = old_areas_cats)
++
+         return nlines
+             
+     def _deleteRecords(self, cats):
+@@ -512,22 +550,173 @@
+ 
+         @return number of deleted 
+         """
++        if len(self._display.selected['ids']) < 1:
++            return 0
++        
+         poList = self._display.GetSelectedIList()
+         cList  = poList.contents
+         
+         nareas = 0
++        old_bboxs = []
++        old_areas_cats = []
++
+         for i in range(cList.n_values):
++
+             if Vect_get_line_type(self.poMapInfo, cList.value[i]) != GV_CENTROID:
+                 continue
+-            
++
++            if self.emit_signals:
++                area = Vect_get_centroid_area(self.poMapInfo, cList.value[i]);
++                if area > 0: 
++                    bbox, cats = self._getaAreaBboxCats(area)
++                    old_bboxs += bbox
++                    old_areas_cats += cats
++
+             nareas += Vedit_delete_area_centroid(self.poMapInfo, cList.value[i])
+         
+         if nareas > 0:
+             self._addChangeset()
+             self.toolbar.EnableUndo()
++            if self.emit_signals:
++                self.areasDeleted.emit(old_bboxs = old_bboxs, old_areas_cats = old_areas_cats)        
++
++        return nareas
++   
++    def _getLineAreaBboxCats(self, ln_id):
++        ltype = Vect_read_line(self.poMapInfo, None, None, ln_id)
++
++        if ltype == GV_CENTROID:
++            #TODO centroid opttimization, can be adited also its area -> it will appear two times in new_ lists
++            return self._getCentroidAreaBboxCats(ln_id)
++        else: 
++            return [self._getBbox(ln_id)], [self._getLineAreasCategories(ln_id)]
++
++
++    def _getCentroidAreaBboxCats(self, centroid):
++        if not Vect_line_alive(self.poMapInfo, centroid):
++            return None
++
++        area = Vect_get_centroid_area(self.poMapInfo, centroid)  
++        if area > 0:
++            return self._getaAreaBboxCats(area)
++        else:
++            return None
++
++    def _getaAreaBboxCats(self, area):
++
++        po_b_list = Vect_new_list()
++        Vect_get_area_boundaries(self.poMapInfo, area, po_b_list);
++        b_list = po_b_list.contents
++
++        geoms = []
++        areas_cats = []
++
++        if b_list.n_values > 0:
++            for i_line in range(b_list.n_values):
++
++                line = b_list.value[i_line];
++
++                geoms.append(self._getBbox(abs(line)))
++                areas_cats.append(self._getLineAreasCategories(abs(line)))
+         
+-        return nareas
++        Vect_destroy_list(po_b_list);
++
++        return geoms, areas_cats
++
++    def _getLineAreasCategories(self, ln_id):
++        if not Vect_line_alive (self.poMapInfo, ln_id):
++            return []
++
++        ltype = Vect_read_line(self.poMapInfo, None, None, ln_id)
++        if ltype != GV_BOUNDARY:
++            return []
++
++        cats = [None, None]
++
++        left = c_int()
++        right = c_int()
++
++        if Vect_get_line_areas(self.poMapInfo, ln_id, pointer(left), pointer(right)) == 1:
++            areas = [left.value, right.value]
++
++            for i, a in enumerate(areas):
++                if a > 0: 
++                    centroid = Vect_get_area_centroid(self.poMapInfo, a)
++                    if centroid <= 0:
++                        continue
++                    c = self._getCategories(centroid)
++                    if c:
++                        cats[i] = c
++
++        return cats
++
++    def _getCategories(self, ln_id):
++        if not Vect_line_alive (self.poMapInfo, ln_id):
++            return none
++
++        poCats = Vect_new_cats_struct()
++        if Vect_read_line(self.poMapInfo, None, poCats, ln_id) < 0:
++            Vect_destroy_cats_struct(poCats)
++            return None
++
++        cCats = poCats.contents
++
++        cats = {}
++        for j in range(cCats.n_cats):
++            if cats.has_key(cCats.field[j]):
++                cats[cCats.field[j]].append(cCats.cat[j])
++            else:
++                cats[cCats.field[j]] = [cCats.cat[j]]
+     
++        Vect_destroy_cats_struct(poCats)
++        return cats
++
++    def _getBbox(self, ln_id):
++        if not Vect_line_alive (self.poMapInfo, ln_id):
++            return None
++
++        poPoints = Vect_new_line_struct()
++        if Vect_read_line(self.poMapInfo, poPoints, None, ln_id) < 0:
++            Vect_destroy_line_struct(poPoints)
++            return []
++
++        geom = self._convertGeom(poPoints)
++        bbox = self._createBbox(geom)
++        Vect_destroy_line_struct(poPoints)
++        return bbox
++
++    def _createBbox(self, points):
++
++        bbox = {}
++        for pt in points:
++            if not bbox.has_key('maxy'):
++                bbox['maxy'] = pt[1]
++                bbox['miny'] = pt[1]
++                bbox['maxx'] = pt[0]
++                bbox['minx'] = pt[0]
++                continue
++                
++            if   bbox['maxy'] < pt[1]:
++                bbox['maxy'] = pt[1]
++            elif bbox['miny'] > pt[1]:
++                bbox['miny'] = pt[1]
++                
++            if   bbox['maxx'] < pt[0]:
++                bbox['maxx'] = pt[0]
++            elif bbox['minx'] > pt[0]:
++                bbox['minx'] = pt[0]
++        return bbox
++
++    def _convertGeom(self, poPoints):
++
++        Points = poPoints.contents
++
++        pts_geom = []
++        for j in range(Points.n_points):
++            pts_geom.append((Points.x[j], Points.y[j]))
++
++        return pts_geom
++
+     def MoveSelectedLines(self, move):
+         """!Move selected features
+ 
+@@ -536,16 +725,45 @@
+         if not self._checkMap():
+             return -1
+         
++        nsel = len(self._display.selected['ids'])
++        if nsel < 1:
++            return -1   
++        
+         thresh = self._display.GetThreshold()
+         snap   = self._getSnapMode()
+         
+         poList = self._display.GetSelectedIList()
++
++        if self.emit_signals:
++            old_bboxs = []
++            old_areas_cats = []
++            for sel_id in self._display.selected['ids']:
++                ret = self._getLineAreaBboxCats(sel_id)
++                if ret:
++                    old_bboxs += ret[0]
++                    old_areas_cats += ret[1]
++        
++            Vect_set_updated(self.poMapInfo, 1)
++            n_up_lines_old = Vect_get_num_updated_lines(self.poMapInfo)
++        
+         nlines = Vedit_move_lines(self.poMapInfo, self.popoBgMapInfo, int(self.poBgMapInfo is not None),
+                                   poList,
+                                   move[0], move[1], 0,
+                                   snap, thresh)
++
+         Vect_destroy_list(poList)
+-        
++
++        if nlines > 0 and self.emit_signals:
++            new_bboxs = []
++            new_areas_cats = []
++            n_up_lines = Vect_get_num_updated_lines(self.poMapInfo)
++            for i in range(n_up_lines_old, n_up_lines):
++                new_id = Vect_get_updated_line(self.poMapInfo, i)
++                ret = self._getLineAreaBboxCats(new_id)
++                if ret:
++                    new_bboxs += ret[0]
++                    new_areas_cats += ret[1]
++
+         if nlines > 0 and self._settings['breakLines']:
+             for i in range(1, nlines):
+                 self._breakLineAtIntersection(nlines + i, None, changeset)
+@@ -553,7 +771,13 @@
+         if nlines > 0:
+             self._addChangeset()
+             self.toolbar.EnableUndo()
+-        
++            
++            if self.emit_signals:
++                self.featuresMoved.emit(new_bboxs = new_bboxs,
++                                        old_bboxs = old_bboxs, 
++                                        old_areas_cats = old_areas_cats, 
++                                        new_areas_cats = new_areas_cats)
++
+         return nlines
+ 
+     def MoveSelectedVertex(self, point, move):
+@@ -571,12 +795,21 @@
+         
+         if len(self._display.selected['ids']) != 1:
+             return -1
+-        
++
++        # move only first found vertex in bbox 
++        poList = self._display.GetSelectedIList()
++
++        if self.emit_signals:
++            cList = poList.contents
++            old_bboxs = [self._getBbox(cList.value[0])]
++            old_areas_cats = [self._getLineAreasCategories(cList.value[0])]
++
++            Vect_set_updated(self.poMapInfo, 1)
++            n_up_lines_old = Vect_get_num_updated_lines(self.poMapInfo)
++
+         Vect_reset_line(self.poPoints)
+         Vect_append_point(self.poPoints, point[0], point[1], 0.0)
+-        
+-        # move only first found vertex in bbox 
+-        poList = self._display.GetSelectedIList()
++
+         moved = Vedit_move_vertex(self.poMapInfo, self.popoBgMapInfo, int(self.poBgMapInfo is not None),
+                                   poList, self.poPoints,
+                                   self._display.GetThreshold(type = 'selectThresh'),
+@@ -584,7 +817,17 @@
+                                   move[0], move[1], 0.0,
+                                   1, self._getSnapMode())
+         Vect_destroy_list(poList)
+-        
++
++        if moved > 0 and self.emit_signals:
++            n_up_lines = Vect_get_num_updated_lines(self.poMapInfo)
++
++            new_bboxs = []
++            new_areas_cats = []
++            for i in range(n_up_lines_old, n_up_lines):
++                new_id = Vect_get_updated_line(self.poMapInfo, i)
++                new_bboxs.append(self._getBbox(new_id))
++                new_areas_cats.append(self._getLineAreasCategories(new_id))
++
+         if moved > 0 and self._settings['breakLines']:
+             self._breakLineAtIntersection(Vect_get_num_lines(self.poMapInfo),
+                                           None)
+@@ -592,7 +835,13 @@
+         if moved > 0:
+             self._addChangeset()
+             self.toolbar.EnableUndo()
+-        
++
++            if self.emit_signals:
++                self.vertexMoved.emit(new_bboxs = new_bboxs,  
++                                      new_areas_cats = new_areas_cats, 
++                                      old_areas_cats = old_areas_cats, 
++                                      old_bboxs = old_bboxs)
++
+         return moved
+ 
+     def AddVertex(self, coords):
+@@ -681,6 +930,10 @@
+             self._error.ReadLine(line)
+             return -1
+         
++        if self.emit_signals:
++            old_bboxs = [self._getBbox(line)]
++            old_areas_cats = [self._getLineAreasCategories(line)]
++
+         # build feature geometry
+         Vect_reset_line(self.poPoints)
+         for p in coords:
+@@ -696,6 +949,9 @@
+         
+         newline = Vect_rewrite_line(self.poMapInfo, line, ltype,
+                                     self.poPoints, self.poCats)
++        if newline > 0 and self.emit_signals:
++            new_geom = [self._getBbox(newline)]
++            new_areas_cats = [self._getLineAreasCategories(newline)]
+         
+         if newline > 0 and self._settings['breakLines']:
+             self._breakLineAtIntersection(newline, None)
+@@ -703,7 +959,13 @@
+         if newline > 0:
+             self._addChangeset()
+             self.toolbar.EnableUndo()
+-        
++    
++            if self.emit_signals:
++                self.lineEdited.emit(old_bboxs = old_bboxs, 
++                                     old_areas_cats = old_areas_cats, 
++                                     new_bboxs = new_bboxs, 
++                                     new_areas_cats = new_areas_cats)
++
+         return newline
+ 
+     def FlipLine(self):
+@@ -1514,6 +1776,16 @@
+             return 0
+         
+         poList  = self._display.GetSelectedIList()
++
++        if self.emit_signals:
++            cList = poList.contents
++            
++            old_bboxs = [self._getBbox(cList.value[0])]
++            old_areas_cats = [self._getLineAreasCategories(cList.value[0])]
++
++            Vect_set_updated(self.poMapInfo, 1)
++            n_up_lines_old = Vect_get_num_updated_lines(self.poMapInfo)
++
+         Vect_reset_line(self.poPoints)
+         Vect_append_point(self.poPoints, coords[0], coords[1], 0.0)
+         
+@@ -1525,15 +1797,35 @@
+         else:
+             ret = Vedit_remove_vertex(self.poMapInfo, poList,
+                                       self.poPoints, thresh)
++
+         Vect_destroy_list(poList)
++
++        if ret > 0 and self.emit_signals:
++            new_bboxs = []
++            new_areas_cats = []
++
++            n_up_lines = Vect_get_num_updated_lines(self.poMapInfo)
++            for i in range(n_up_lines_old, n_up_lines):
++                new_id = Vect_get_updated_line(self.poMapInfo, i)
++                new_areas_cats.append(self._getLineAreasCategories(new_id))
++                new_bboxs.append(self._getBbox(new_id))
+         
+         if not add and ret > 0 and self._settings['breakLines']:
+             self._breakLineAtIntersection(Vect_get_num_lines(self.poMapInfo),
+                                           None)
+-        
++
+         if ret > 0:
+             self._addChangeset()
+-                
++
++        if ret > 0 and self.emit_signals:
++            if add:
++                self.vertexAdded.emit(old_bboxs = old_bboxs, new_bboxs = new_bboxs)
++            else:
++                self.vertexRemoved.emit(old_bboxs = old_bboxs, 
++                                        new_bboxs = new_bboxs,
++                                        old_areas_cats = old_areas_cats,
++                                        new_areas_cats = new_areas_cats)
++
+         return 1
+     
+     def GetLineCats(self, line):
+Index: gui/wxpython/vdigit/toolbars.py
+===================================================================
+--- gui/wxpython/vdigit/toolbars.py	(revision 57747)
++++ gui/wxpython/vdigit/toolbars.py	(working copy)
+@@ -17,6 +17,7 @@
+ import wx
+ 
+ from grass.script import core as grass
++from grass.pydispatch.signal import Signal
+ 
+ from gui_core.toolbars  import BaseToolbar, BaseIcons
+ from gui_core.dialogs   import CreateNewVector
+@@ -42,6 +43,8 @@
+         self.digit         = None
+         self._giface       = giface
+         
++        self.editingStarted = Signal("VDigitToolbar.editingStarted")
++
+         # currently selected map layer for editing (reference to MapLayer instance)
+         self.mapLayer = None
+         # list of vector layers from Layer Manager (only in the current mapset)
+@@ -860,6 +863,7 @@
+             alpha = int(opacity * 255)
+             self.digit.GetDisplay().UpdateSettings(alpha = alpha)
+         
++        self.editingStarted.emit(vectMap = mapLayer.GetName(), digit = self.digit)
+         return True
+ 
+     def StopEditing(self):
 Index: gui/wxpython/vnet/toolbars.py
 ===================================================================
---- gui/wxpython/vnet/toolbars.py	(revision 57734)
+--- gui/wxpython/vnet/toolbars.py	(revision 57747)
 +++ gui/wxpython/vnet/toolbars.py	(working copy)
 @@ -19,9 +19,9 @@
  
@@ -123,7 +1973,7 @@
  class PointListToolbar(BaseToolbar):
 Index: gui/wxpython/vnet/dialogs.py
 ===================================================================
---- gui/wxpython/vnet/dialogs.py	(revision 57734)
+--- gui/wxpython/vnet/dialogs.py	(revision 57747)
 +++ gui/wxpython/vnet/dialogs.py	(working copy)
 @@ -1218,7 +1218,7 @@
                        pos = (row, 1))
@@ -136,7 +1986,7 @@
          styleBoxSizer.Add(item = gridSizer, flag = wx.EXPAND)
 Index: gui/wxpython/Makefile
 ===================================================================
---- gui/wxpython/Makefile	(revision 57734)
+--- gui/wxpython/Makefile	(revision 57747)
 +++ gui/wxpython/Makefile	(working copy)
 @@ -13,7 +13,7 @@
  	$(wildcard animation/* core/*.py dbmgr/* gcp/*.py gmodeler/* \
@@ -158,11 +2008,75 @@
  DSTDIRS := $(patsubst %,$(ETCDIR)/%,icons scripts xml)
  
  default: $(DSTFILES)
+Index: gui/wxpython/mapdisp/frame.py
+===================================================================
+--- gui/wxpython/mapdisp/frame.py	(revision 57747)
++++ gui/wxpython/mapdisp/frame.py	(working copy)
+@@ -231,6 +231,7 @@
+         #
+         self.dialogs = {}
+         self.dialogs['attributes'] = None
++        self.dialogs['scatt_plot'] = None
+         self.dialogs['category'] = None
+         self.dialogs['vnet'] = None
+         self.dialogs['query'] = None
+@@ -1199,6 +1200,19 @@
+         """!Returns toolbar with zooming tools"""
+         return self.toolbars['map']
+ 
++    def OnIScatt(self, event):
++        """!Init interactive scatterplot tools
++        """
++        if self.dialogs['scatt_plot']:
++            self.dialogs['scatt_plot'].Raise()
++            return
++
++        from scatt_plot.frame import IScattDialog
++        self.dialogs['scatt_plot'] = IScattDialog(parent=self, giface=self._giface)
++        
++        self.dialogs['scatt_plot'].CenterOnScreen()
++        self.dialogs['scatt_plot'].Show()
++
+     def OnVNet(self, event):
+         """!Dialog for v.net* modules 
+         """
+Index: gui/wxpython/mapdisp/toolbars.py
+===================================================================
+--- gui/wxpython/mapdisp/toolbars.py	(revision 57747)
++++ gui/wxpython/mapdisp/toolbars.py	(working copy)
+@@ -49,6 +49,8 @@
+                             label = _('Create histogram of raster map')),
+     'vnet'       : MetaIcon(img = 'vector-tools',
+                             label = _('Vector network analysis tool')),
++    'interact_scatter' : MetaIcon(img = 'layer-raster-profile',
++                            label = _("Interactive scatter plot tool")),
+     }
+ 
+ NvizIcons = {
+@@ -239,7 +241,9 @@
+                       (MapIcons["scatter"],     self.parent.OnScatterplot),
+                       (MapIcons["histogram"],   self.parent.OnHistogramPyPlot),
+                       (BaseIcons["histogramD"], self.parent.OnHistogram),
+-                      (MapIcons["vnet"],        self.parent.OnVNet)))
++                      (MapIcons["vnet"],        self.parent.OnVNet),
++                      (MapIcons["interact_scatter"], 
++                       self.parent.OnIScatt)))
+         
+     def OnDecoration(self, event):
+         """!Decorations overlay menu
 Index: gui/wxpython/iclass/dialogs.py
 ===================================================================
---- gui/wxpython/iclass/dialogs.py	(revision 57734)
+--- gui/wxpython/iclass/dialogs.py	(revision 57747)
 +++ gui/wxpython/iclass/dialogs.py	(working copy)
-@@ -403,8 +403,23 @@
+@@ -337,7 +337,6 @@
+     def OnClose(self, event):
+         self.catList.DeselectAll()
+         
+-        self.catList.UpdateChoice()
+         self.Hide()
+         #if not isinstance(event, wx.CloseEvent):
+             #self.Destroy()
+@@ -403,12 +402,26 @@
              except UnicodeEncodeError:
                  GMessage(parent = self, message = _("Please use only ASCII characters."))
                  return
@@ -186,28 +2100,52 @@
          cat = self.stats_data.GetCategories()[row]
          self.stats_data.GetStatistics(cat).SetStatistics(stats = {attr : text})
          
-@@ -469,13 +484,19 @@
-         toolbar.SetCategories(catNames = catNames, catIdx = cats)
-         if name in catNames:
-             toolbar.choice.SetStringSelection(name)
-+            cat = toolbar.GetSelectedCategoryIdx()
-         elif catNames:
-             toolbar.choice.SetSelection(0)
--            
-+            cat = toolbar.GetSelectedCategoryIdx()
-+        else:
-+            cat = None
-+
-         if toolbar.choice.IsEmpty():
-             toolbar.EnableControls(False)
-         else:
-             toolbar.EnableControls(True)
-+
-+        self.mapWindow.CategoryChanged(cat)
-         # don't forget to update maps, histo, ...
+-        self.UpdateChoice()
+         toolbar = self.mapWindow.toolbars['iClass']
+         toolbar.choice.SetSelection(row)
+         self.Select(row)
+@@ -431,7 +444,6 @@
+         self.stats_data.AddStatistics(cat, name, color)
+         self.SetItemCount(len(self.stats_data.GetCategories()))
          
+-        self.UpdateChoice()
+         self.mapWindow.UpdateChangeState(changes = True)
+                 
+     def DeleteCategory(self):
+@@ -452,32 +464,10 @@
+             
+         self.SetItemCount(len(self.stats_data.GetCategories()))
+         
+-        self.UpdateChoice()
+         self.mapWindow.UpdateChangeState(changes = True)
+         
+         self.mapWindow.DeleteAreas(cats = del_cats)
+-    
+-    def UpdateChoice(self):
+-        toolbar = self.mapWindow.toolbars['iClass']
+-        name = toolbar.GetSelectedCategoryName()
+-        catNames = []
+-
+-        cats = self.stats_data.GetCategories()
+-        for cat in cats:
+-            stat = self.stats_data.GetStatistics(cat)
+-            catNames.append(stat.name)
+-        toolbar.SetCategories(catNames = catNames, catIdx = cats)
+-        if name in catNames:
+-            toolbar.choice.SetStringSelection(name)
+-        elif catNames:
+-            toolbar.choice.SetSelection(0)
+             
+-        if toolbar.choice.IsEmpty():
+-            toolbar.EnableControls(False)
+-        else:
+-            toolbar.EnableControls(True)
+-        # don't forget to update maps, histo, ...
+-        
      def GetSelectedIndices(self, state =  wx.LIST_STATE_SELECTED):
-@@ -560,6 +581,29 @@
+         indices = []
+         lastFound = -1
+@@ -560,6 +550,29 @@
      def OnGetItemAttr(self, item):
          return None
  
@@ -239,8 +2177,17 @@
                   file = None, title = _("Save signature file"), id = wx.ID_ANY,
 Index: gui/wxpython/iclass/toolbars.py
 ===================================================================
---- gui/wxpython/iclass/toolbars.py	(revision 57734)
+--- gui/wxpython/iclass/toolbars.py	(revision 57747)
 +++ gui/wxpython/iclass/toolbars.py	(working copy)
+@@ -23,7 +23,7 @@
+ from core.utils import _
+ from gui_core.toolbars import BaseToolbar, BaseIcons
+ from icons.icon import MetaIcon
+-from iclass.dialogs import IClassMapDialog
++from iclass.dialogs import IClassMapDialog, ContrastColor
+ from gui_core.forms import GUI
+ 
+ import grass.script as grass
 @@ -46,9 +46,7 @@
          'importAreas' : MetaIcon(img = 'layer-import',
                              label = _('Import training areas from vector map')),
@@ -252,7 +2199,7 @@
          }
          
  class IClassMapToolbar(BaseToolbar):
-@@ -117,10 +115,7 @@
+@@ -117,17 +115,16 @@
                                       ("zoomBack", icons["zoomBack"],
                                        self.parent.OnZoomBack),
                                       ("zoomToMap", icons["zoomExtent"],
@@ -264,9 +2211,100 @@
                                      ))
  class IClassToolbar(BaseToolbar):
      """!IClass toolbar
+     """
+-    def __init__(self, parent):
++    def __init__(self, parent, stats_data):
+         """!IClass toolbar constructor
+         """
++        self.stats_data = stats_data
++
+         BaseToolbar.__init__(self, parent)
+         self.InitToolbar(self._toolbarData())
+         
+@@ -148,7 +145,12 @@
+         
+         self.combo.Bind(wx.EVT_COMBOBOX, self.OnStdChangeSelection)
+         self.combo.Bind(wx.EVT_TEXT_ENTER, self.OnStdChangeText)
+-        
++    
++        self.stats_data.statisticsAdded.connect(self.Update)
++        self.stats_data.statisticsDeleted.connect(self.Update)
++        self.stats_data.allStatisticsDeleted.connect(self.Update)
++        self.stats_data.statisticsSet.connect(self.Update)
++
+         # realize the toolbar
+         self.Realize()
+         
+@@ -171,13 +173,30 @@
+                                       ("sigFile", icons['sigFile'],
+                                       self.parent.OnSaveSigFile),
+                                     ))
+-                                    
++
++    def OnMotion(self, event):
++        print self.choice.GetStringSelection()
++                                
+     def OnSelectCategory(self, event):
+         idx = self.choice.GetSelection()
+         cat = self.choice.GetClientData(idx)
+-        
++
++        self._updateColor(cat)
+         self.parent.CategoryChanged(currentCat = cat)
+         
++    def _updateColor(self, cat):
++
++        if cat:
++            stat = self.stats_data.GetStatistics(cat)
++            back_c = wx.Colour(*map(int, stat.color.split(':')))
++            text_c = wx.Colour(*ContrastColor(back_c))
++        else:
++            back_c = wx.SystemSettings.GetColour(wx.SYS_COLOUR_BACKGROUND)
++            text_c = wx.SystemSettings.GetColour(wx.SYS_COLOUR_BTNTEXT)
++
++        self.choice.SetForegroundColour(text_c)
++        self.choice.SetBackgroundColour(back_c)
++
+     def SetCategories(self, catNames, catIdx):
+         self.choice.Clear()
+         for name, idx in zip(catNames, catIdx):
+@@ -231,6 +250,33 @@
+     def EnableControls(self, enable = True):
+         self.combo.Enable(enable)
+         self.choice.Enable(enable)
++
++    def Update(self, *args, **kwargs):
++        name = self.GetSelectedCategoryName()
++        catNames = []
++
++        cats = self.stats_data.GetCategories()
++        for cat in cats:
++            stat = self.stats_data.GetStatistics(cat)
++            catNames.append(stat.name)
++        self.SetCategories(catNames = catNames, catIdx = cats)
++        if name in catNames:
++            self.choice.SetStringSelection(name)
++            cat = self.GetSelectedCategoryIdx()
++        elif catNames:
++            self.choice.SetSelection(0)
++            cat = self.GetSelectedCategoryIdx()
++        else:
++            cat = None
++
++        if self.choice.IsEmpty():
++            self.EnableControls(False)
++        else:
++            self.EnableControls(True)
++
++        self._updateColor(cat)
++        self.parent.CategoryChanged(cat)
++        # don't forget to update maps, histo, ...
+         
+ class IClassMapManagerToolbar(BaseToolbar):
+     """!IClass toolbar
 Index: gui/wxpython/iclass/frame.py
 ===================================================================
---- gui/wxpython/iclass/frame.py	(revision 57734)
+--- gui/wxpython/iclass/frame.py	(revision 57747)
 +++ gui/wxpython/iclass/frame.py	(working copy)
 @@ -64,6 +64,8 @@
                                 IClassExportAreasDialog, IClassMapDialog
@@ -277,7 +2315,7 @@
  class IClassMapFrame(DoubleMapFrame):
      """! wxIClass main frame
      
-@@ -114,6 +116,10 @@
+@@ -114,6 +116,12 @@
              lambda:
              self.statusbarManager.statusbarItems['coordinates'].SetAdditionalInfo(None))
          self.SetSize(size)
@@ -285,9 +2323,22 @@
 +        self.groupSet = Signal("IClassMapFrame.groupSet")
 +        self.categoryChanged = Signal('IClassMapFrame.categoryChanged')
 +
++        self.InitStatistics()
++
          #
          # Add toolbars
          #
+@@ -162,9 +170,7 @@
+                                              Map = self.GetFirstMap())
+         self.previewMapManager = MapManager(self, mapWindow = self.GetSecondWindow(),
+                                             Map = self.GetSecondMap())
+-                                           
+-        self.InitStatistics()
+-        
++                                                   
+         self.changes = False
+         self.exportVector = None
+         
 @@ -177,7 +183,7 @@
          self.dialogs['category']   = None
          
@@ -306,6 +2357,15 @@
      def RemoveTempVector(self):
          """!Removes temporary vector map with training areas"""
          ret = RunCommand(prog = 'g.remove',
+@@ -282,7 +288,7 @@
+                               BestSize((self.toolbars[name].GetBestSize())))
+                               
+         if name == "iClass":
+-            self.toolbars[name] = IClassToolbar(self)
++            self.toolbars[name] = IClassToolbar(self, stats_data=self.stats_data)
+             
+             self._mgr.AddPane(self.toolbars[name],
+                               wx.aui.AuiPaneInfo().
 @@ -334,11 +340,12 @@
              self._addPaneMapWindow(name = 'preview')
              self._addPaneToolbar(name = 'iClassTrainingMapManager')
@@ -488,7 +2548,7 @@
      import core.render as render
 Index: gui/wxpython/iclass/plots.py
 ===================================================================
---- gui/wxpython/iclass/plots.py	(revision 57734)
+--- gui/wxpython/iclass/plots.py	(revision 57747)
 +++ gui/wxpython/iclass/plots.py	(working copy)
 @@ -19,6 +19,7 @@
  import wx.lib.plot as plot
@@ -635,11 +2695,976 @@
      def DrawCoincidencePlots(self):
          """!Draw coincidence plots"""
          for bandIdx in range(len(self.bandList)):
+Index: gui/wxpython/scatt_plot/__init__.py
+===================================================================
+--- gui/wxpython/scatt_plot/__init__.py	(revision 0)
++++ gui/wxpython/scatt_plot/__init__.py	(working copy)
+@@ -0,0 +1,11 @@
++all = [
++    'dialogs',
++    'controllers',
++    'frame',
++    'gthreading',
++    'plots',
++    'scatt_core',
++    'toolbars',
++    'scatt_core',
++    'core_c',
++    ]
+Index: gui/wxpython/scatt_plot/plots.py
+===================================================================
+--- gui/wxpython/scatt_plot/plots.py	(revision 0)
++++ gui/wxpython/scatt_plot/plots.py	(working copy)
+@@ -0,0 +1,943 @@
++"""!
++ at package scatt_plot.dialogs
++
++ at brief Ploting widgets.
++
++Classes:
++
++(C) 2013 by the GRASS Development Team
++
++This program is free software under the GNU General Public License
++(>=v2). Read the file COPYING that comes with GRASS for details.
++
++ at author Stepan Turek <stepan.turek seznam.cz> (mentor: Martin Landa)
++"""
++import wx
++import numpy as np
++from math import ceil
++#TODO testing
++import time
++from multiprocessing import Process, Queue
++
++from copy import deepcopy
++from scatt_plot.core_c import MergeArrays, ApplyColormap
++from core.settings import UserSettings
++
++try:
++    import matplotlib
++    matplotlib.use('WXAgg')
++    from matplotlib.figure import Figure
++    from matplotlib.backends.backend_wxagg import \
++    FigureCanvasWxAgg as FigCanvas
++    from matplotlib.lines import Line2D
++    from matplotlib.artist import Artist
++    from matplotlib.mlab import dist_point_to_segment
++    from matplotlib.patches import Polygon, Ellipse, Rectangle
++    import matplotlib.image as mi
++    import matplotlib.colors as mcolors
++    import matplotlib.cbook as cbook
++except ImportError as e:
++    raise ImportError(_("Unable to import matplotlib (try to install it).\n%s") % e)
++
++import grass.script as grass
++from grass.pydispatch.signal import Signal
++
++class ScatterPlotWidget(wx.Panel):
++    def __init__(self, parent, scatt_id, scatt_mgr, transpose,
++                 id = wx.ID_ANY):
++
++        wx.Panel.__init__(self, parent, id)
++
++        self.parent = parent
++        self.full_extend = None
++        self.mode = None
++
++        self._createWidgets()
++        self._doLayout()
++        self.scatt_id = scatt_id
++        self.scatt_mgr = scatt_mgr
++
++        self.cidpress = None
++        self.cidrelease = None
++
++        self.transpose = transpose
++
++        self.inverse = False
++
++        self.SetSize((200, 100))
++        self.Layout()
++
++        self.base_scale = 1.2
++        self.Bind(wx.EVT_CLOSE,lambda event : self.CleanUp())
++
++        self.plotClosed = Signal("ScatterPlotWidget.plotClosed")
++        self.cursorMove = Signal("ScatterPlotWidget.cursorMove")
++
++        self.contex_menu = ScatterPlotContextMenu(plot = self)
++
++        self.ciddscroll = None
++
++        self.canvas.mpl_connect('motion_notify_event', self.Motion)
++        self.canvas.mpl_connect('button_press_event', self.OnPress)
++        self.canvas.mpl_connect('button_release_event', self.OnRelease)
++        self.canvas.mpl_connect('draw_event', self.draw_callback)
++
++    def draw_callback(self, event):
++        self.polygon_drawer.draw_callback(event)
++        self.axes.draw_artist(self.zoom_rect)
++
++    def _createWidgets(self):
++
++        # Create the mpl Figure and FigCanvas objects. 
++        # 5x4 inches, 100 dots-per-inch
++        #
++        self.dpi = 100
++        self.fig = Figure((1.0, 1.0), dpi=self.dpi)
++        self.fig.autolayout = True
++
++        self.canvas = FigCanvas(self, -1, self.fig)
++        
++        self.axes = self.fig.add_axes([0.0,0.0,1,1])
++
++        pol = Polygon(list(zip([0], [0])), animated=True)
++        self.axes.add_patch(pol)
++        self.polygon_drawer = PolygonDrawer(self.axes, pol = pol, empty_pol = True)
++
++        self.zoom_wheel_coords = None
++        self.zoom_rect_coords = None
++        self.zoom_rect = Polygon(list(zip([0], [0])), facecolor = 'none')
++        self.zoom_rect.set_visible(False)
++        self.axes.add_patch(self.zoom_rect)
++
++    def ZoomToExtend(self):
++        if self.full_extend:
++            self.axes.axis(self.full_extend)
++            self.canvas.draw()
++
++    def SetMode(self, mode):
++        self._deactivateMode()
++        if mode == 'zoom':
++            self.ciddscroll = self.canvas.mpl_connect('scroll_event', self.ZoomWheel)
++            self.mode = 'zoom'
++        elif mode == 'zoom_extend':
++            self.mode = 'zoom_extend'
++        elif mode == 'pan':
++            self.mode = 'pan'
++        elif mode:
++            self.polygon_drawer.SetMode(mode)
++
++    def SetSelectionPolygonMode(self, activate):
++        self.polygon_drawer.SetSelectionPolygonMode(activate)
++
++    def _deactivateMode(self):
++        self.mode  = None
++        self.polygon_drawer.SetMode(None)
++
++        if self.ciddscroll:
++            self.canvas.mpl_disconnect(self.ciddscroll)
++
++        self.zoom_rect.set_visible(False)
++        self._stopCategoryEdit()
++
++    def GetCoords(self):
++
++        coords = self.polygon_drawer.GetCoords()
++        if coords is None:
++            return
++
++        if self.transpose:
++            for c in coords:
++                tmp = c[0]
++                c[0] = c[1]
++                c[1] = tmp
++
++        return coords
++
++    def SetEmpty(self):
++        return self.polygon_drawer.SetEmpty()
++
++    def OnRelease(self, event):
++        if not self.mode == "zoom": return
++        self.zoom_rect.set_visible(False)
++        self.ZoomRectangle(event)
++        self.canvas.draw()
++    
++    def OnPress(self, event):
++        'on button press we will see if the mouse is over us and store some data'
++        if not event.inaxes:
++            return
++        if self.mode == "zoom_extend":
++            self.ZoomToExtend()
++
++        if event.xdata and event.ydata:
++            self.zoom_wheel_coords = { 'x' : event.xdata, 'y' : event.ydata}
++            self.zoom_rect_coords = { 'x' : event.xdata, 'y' : event.ydata}
++        else:
++            self.zoom_wheel_coords = None
++            self.zoom_rect_coords = None
++
++    def _stopCategoryEdit(self):
++        'disconnect all the stored connection ids'
++
++        if self.cidpress:
++            self.canvas.mpl_disconnect(self.cidpress)
++        if self.cidrelease:
++            self.canvas.mpl_disconnect(self.cidrelease)
++        #self.canvas.mpl_disconnect(self.cidmotion)
++
++    def _doLayout(self):
++        
++        self.main_sizer = wx.BoxSizer(wx.VERTICAL)
++        self.main_sizer.Add(self.canvas, 1, wx.LEFT | wx.TOP | wx.GROW)
++        self.SetSizer(self.main_sizer)
++        self.main_sizer.Fit(self)
++    
++    def Plot(self, cats_order, scatts, ellipses, styles):
++        """ Redraws the figure
++        """
++
++        callafter_list = []
++
++        if self.full_extend:
++            cx = self.axes.get_xlim()
++            cy = self.axes.get_ylim()
++            c = cx + cy
++        else:
++            c = None
++
++        #q = Queue()
++        #p = Process(target=MergeImg, args=(cats_order, scatts, styles, self.transpose, q))
++        #p.start()
++        #merged_img, self.full_extend = q.get()
++        #p.join()
++        
++        merged_img, self.full_extend = MergeImg(cats_order, scatts, styles, None)
++        self.axes.clear()
++        self.axes.axis('equal')
++
++        if self.transpose:
++            merged_img = np.transpose(merged_img, (1, 0, 2))
++
++        img = imshow(self.axes, merged_img,
++                     extent= [int(ceil(x)) for x in self.full_extend],
++                     origin='lower',
++                     interpolation='nearest',
++                     aspect="equal")
++
++        callafter_list.append([self.axes.draw_artist, [img]])
++        callafter_list.append([grass.try_remove, [merged_img.filename]])
++
++        for cat_id in cats_order:
++            if cat_id == 0:
++                continue
++            if not ellipses.has_key(cat_id):
++                continue
++                
++            e = ellipses[cat_id]
++            if not e:
++                continue
++
++            colors = styles[cat_id]['color'].split(":")
++            if self.transpose:
++                e['theta'] = 360 - e['theta'] + 90
++                if e['theta'] >= 360:
++                    e['theta'] = abs(360 - e['theta']) 
++                
++                e['pos'] = [e['pos'][1], e['pos'][0]]
++
++            ellip = Ellipse(xy=e['pos'], 
++                            width=e['width'], 
++                            height=e['height'], 
++                            angle=e['theta'], 
++                            edgecolor="w",
++                            linewidth=1.5, 
++                            facecolor='None')
++            self.axes.add_artist(ellip)
++            callafter_list.append([self.axes.draw_artist, [ellip]])
++
++            color = map(lambda v : int(v)/255.0, styles[cat_id]['color'].split(":"))
++
++            ellip = Ellipse(xy=e['pos'], 
++                            width=e['width'], 
++                            height=e['height'], 
++                            angle=e['theta'], 
++                            edgecolor=color,
++                            linewidth=1, 
++                            facecolor='None')
++
++            self.axes.add_artist(ellip)
++            callafter_list.append([self.axes.draw_artist, [ellip]])
++            
++            center = Line2D([e['pos'][0]], [e['pos'][1]], 
++                            marker='x',
++                            markeredgecolor='w',
++                            #markerfacecolor=color,
++                            markersize=2)
++            self.axes.add_artist(center)
++            callafter_list.append([self.axes.draw_artist, [center]])
++
++        callafter_list.append([self.fig.canvas.blit, []])
++
++        if c:
++            self.axes.axis(c)
++        wx.CallAfter(lambda : self.CallAfter(callafter_list))
++    
++    def CallAfter(self, funcs_list):
++        while funcs_list: 
++            fcn, args = funcs_list.pop(0) 
++            fcn(*args) 
++
++        self.canvas.draw()
++
++    def CleanUp(self):
++        self.plotClosed.emit(scatt_id = self.scatt_id)
++        self.Destroy()
++
++    def ZoomWheel(self, event):
++        # get the current x and y limits
++        if not event.inaxes:
++            return
++        # tcaswell
++        # http://stackoverflow.com/questions/11551049/matplotlib-plot-zooming-with-scroll-wheel
++        cur_xlim = self.axes.get_xlim()
++        cur_ylim = self.axes.get_ylim()
++        
++        xdata = event.xdata
++        ydata = event.ydata 
++        if event.button == 'up':
++            scale_factor = 1/self.base_scale
++        elif event.button == 'down':
++            scale_factor = self.base_scale
++        else:
++            scale_factor = 1
++
++        extend = (xdata - (xdata - cur_xlim[0]) * scale_factor,
++                  xdata + (cur_xlim[1] - xdata) * scale_factor, 
++                  ydata - (ydata - cur_ylim[0]) * scale_factor,
++                  ydata + (cur_ylim[1] - ydata) * scale_factor)
++
++        self.axes.axis(extend)
++        
++        self.canvas.draw()
++
++    def ZoomRectangle(self, event):
++        # get the current x and y limits
++        if not self.mode == "zoom": return
++        if event.inaxes is None: return
++        if event.button != 1: return
++
++        cur_xlim = self.axes.get_xlim()
++        cur_ylim = self.axes.get_ylim()
++        
++        x1, y1 = event.xdata, event.ydata
++        x2 = deepcopy(self.zoom_rect_coords['x'])
++        y2 = deepcopy(self.zoom_rect_coords['y'])
++
++        if x1 == x2 or y1 == y2:
++            return
++
++        self.axes.axis((x1, x2, y1, y2))
++        #self.axes.set_xlim(x1, x2)#, auto = True)
++        #self.axes.set_ylim(y1, y2)#, auto = True)
++        self.canvas.draw()
++
++    def Motion(self, event):
++        self.PanMotion(event)
++        self.ZoomRectMotion(event)
++        
++        if event.inaxes is None: 
++            return
++        
++        self.cursorMove.emit(x=event.xdata, y=event.ydata)
++
++    def PanMotion(self, event):
++        'on mouse movement'
++        if not self.mode == "pan": 
++            return
++        if event.inaxes is None: 
++            return
++        if event.button != 1: 
++            return
++
++        cur_xlim = self.axes.get_xlim()
++        cur_ylim = self.axes.get_ylim()
++
++        x,y = event.xdata, event.ydata
++        
++        mx = (x - self.zoom_wheel_coords['x']) * 0.6
++        my = (y - self.zoom_wheel_coords['y']) * 0.6
++
++        extend = (cur_xlim[0] - mx, cur_xlim[1] - mx, cur_ylim[0] - my, cur_ylim[1] - my)
++
++        self.zoom_wheel_coords['x'] = x
++        self.zoom_wheel_coords['y'] = y
++
++        self.axes.axis(extend)
++
++        #self.canvas.copy_from_bbox(self.axes.bbox)
++        #self.canvas.restore_region(self.background)
++        self.canvas.draw()
++        
++    def ZoomRectMotion(self, event):
++        if not self.mode == "zoom": return
++        if event.inaxes is None: return
++        if event.button != 1: return
++
++        x1, y1 = event.xdata, event.ydata
++        self.zoom_rect.set_visible(True)
++        x2 = self.zoom_rect_coords['x']
++        y2 = self.zoom_rect_coords['y']
++
++        self.zoom_rect.xy = ((x1, y1), (x1, y2), (x2, y2), (x2, y1), (x1, y1))
++
++        #self.axes.draw_artist(self.zoom_rect)
++        self.canvas.draw()
++
++class ScatterPlotContextMenu:
++    def __init__(self, plot):
++
++        self.plot = plot
++        self.canvas = plot.canvas
++        self.cidpress = self.canvas.mpl_connect(
++            'button_press_event', self.ContexMenu)
++   
++    def ContexMenu(self, event):
++        if not event.inaxes:
++            return
++
++        if event.button == 3:
++            menu = wx.Menu()       
++            menu_items = [["zoom_to_extend", _("Zoom to scatter plot extend"), lambda event : self.plot.ZoomToExtend()]]
++
++            for item in menu_items:
++                item_id = wx.ID_ANY
++                menu.Append(item_id, text = item[1])
++                menu.Bind(wx.EVT_MENU, item[2], id = item_id)
++
++            wx.CallAfter(self.ShowMenu, menu) 
++   
++    def ShowMenu(self, menu):
++        self.plot.PopupMenu(menu)
++        menu.Destroy()
++        self.plot.ReleaseMouse() 
++
++class PolygonDrawer:
++    """
++    An polygon editor.
++    """
++    def __init__(self, ax, pol, empty_pol):
++        if pol.figure is None:
++            raise RuntimeError('You must first add the polygon to a figure or canvas before defining the interactor')
++        self.ax = ax
++        self.canvas = pol.figure.canvas
++
++        self.showverts = True
++
++        self.pol = pol
++        self.empty_pol = empty_pol
++
++        x, y = zip(*self.pol.xy)
++
++        style = self._getPolygonStyle()
++
++        self.line = Line2D(x, y, marker='o', markerfacecolor='r', animated=True)
++        self.ax.add_line(self.line)
++        #self._update_line(pol)
++
++        cid = self.pol.add_callback(self.poly_changed)
++        self.moving_ver_idx = None # the active vert
++
++        self.mode = None
++
++        if self.empty_pol:
++            self._show(False)
++
++        #self.canvas.mpl_connect('draw_event', self.draw_callback)
++        self.canvas.mpl_connect('button_press_event', self.OnButtonPressed)
++        self.canvas.mpl_connect('button_release_event', self.button_release_callback)
++        self.canvas.mpl_connect('motion_notify_event', self.motion_notify_callback)
++    
++        self.it = 0
++
++    def _getPolygonStyle(self):
++        style = {}
++        style['sel_pol'] = UserSettings.Get(group='scatt', 
++                                            key='selection', 
++                                            subkey='sel_pol')
++        style['sel_pol_vertex'] = UserSettings.Get(group='scatt', 
++                                                   key='selection', 
++                                                   subkey='sel_pol_vertex')
++
++        style['sel_pol'] = [i / 255.0 for i in style['sel_pol']] 
++        style['sel_pol_vertex'] = [i / 255.0 for i in style['sel_pol_vertex']] 
++
++        return style
++
++    def _getSnapTresh(self):
++        return UserSettings.Get(group='scatt', 
++                                key='selection', 
++                                subkey='snap_tresh')
++
++    def SetMode(self, mode):
++        self.mode = mode
++
++    def SetSelectionPolygonMode(self, activate):
++        
++        self.Show(activate)
++        if not activate and self.mode:
++            self.SetMode(None) 
++
++    def Show(self, show):
++        if show:
++            if not self.empty_pol:
++                self._show(True)
++        else:
++            self._show(False)
++
++    def GetCoords(self):
++        if self.empty_pol:
++            return None
++
++        coords = deepcopy(self.pol.xy)
++        return coords
++
++    def SetEmpty(self):
++        self._setEmptyPol(True)
++
++    def _setEmptyPol(self, empty_pol):
++        self.empty_pol = empty_pol
++        self._show(not empty_pol)
++
++    def _show(self, show):
++
++        self.show = show
++
++        self.line.set_visible(self.show)
++        self.pol.set_visible(self.show)
++
++        self.Redraw()
++
++    def Redraw(self):
++        if self.show:
++            self.ax.draw_artist(self.pol)
++            self.ax.draw_artist(self.line)
++        self.canvas.blit(self.ax.bbox)
++        self.canvas.draw()
++
++    def draw_callback(self, event):
++
++        style=self._getPolygonStyle()
++        self.pol.set_facecolor(style['sel_pol'])
++        self.line.set_markerfacecolor(style['sel_pol_vertex'])
++
++        self.background = self.canvas.copy_from_bbox(self.ax.bbox)
++        self.ax.draw_artist(self.pol)
++        self.ax.draw_artist(self.line)
++    
++    def poly_changed(self, pol):
++        'this method is called whenever the polygon object is called'
++        # only copy the artist props to the line (except visibility)
++        vis = self.line.get_visible()
++        Artist.update_from(self.line, pol)
++        self.line.set_visible(vis)  # don't use the pol visibility state
++
++    def get_ind_under_point(self, event):
++        'get the index of the vertex under point if within treshold'
++
++        # display coords
++        xy = np.asarray(self.pol.xy)
++        xyt = self.pol.get_transform().transform(xy)
++        xt, yt = xyt[:, 0], xyt[:, 1]
++        d = np.sqrt((xt-event.x)**2 + (yt-event.y)**2)
++        indseq = np.nonzero(np.equal(d, np.amin(d)))[0]
++        ind = indseq[0]
++
++        if d[ind]>=self._getSnapTresh():
++            ind = None
++
++        return ind
++
++    def OnButtonPressed(self, event):
++        if not event.inaxes:
++            return
++
++        if event.button in [2, 3]: 
++            return
++
++        if self.mode == "delete_vertex":
++            self._deleteVertex(event)
++        elif self.mode == "add_boundary_vertex":
++            self._addVertexOnBoundary(event)
++        elif self.mode == "add_vertex":
++            self._addVertex(event)
++        elif self.mode == "remove_polygon":
++            self.SetEmpty()
++        self.moving_ver_idx = self.get_ind_under_point(event)
++
++    def button_release_callback(self, event):
++        'whenever a mouse button is released'
++        if not self.showverts: return
++        if event.button != 1: return
++        self.moving_ver_idx = None
++
++    def ShowVertices(self, show):
++        self.showverts = show
++        self.line.set_visible(self.showverts)
++        if not self.showverts: self.moving_ver_idx = None
++
++    def _deleteVertex(self, event):
++        ind = self.get_ind_under_point(event)
++
++        if ind  is None or self.empty_pol:
++            return
++
++        if len(self.pol.xy) <= 2:
++            self.empty_pol = True
++            self._show(False)
++            return
++
++        coords = []
++        for i,tup in enumerate(self.pol.xy): 
++            if i == ind:
++                continue
++            elif i == 0 and ind == len(self.pol.xy) - 1:
++                continue
++            elif i == len(self.pol.xy) - 1 and ind == 0: 
++                continue
++
++            coords.append(tup)
++
++        self.pol.xy = coords
++        self.line.set_data(zip(*self.pol.xy))
++
++        self.Redraw()
++
++    def _addVertexOnBoundary(self, event):
++        if self.empty_pol:
++            return
++
++        xys = self.pol.get_transform().transform(self.pol.xy)
++        p = event.x, event.y # display coords
++        for i in range(len(xys)-1):
++            s0 = xys[i]
++            s1 = xys[i+1]
++            d = dist_point_to_segment(p, s0, s1)
++
++            if d<=self._getSnapTresh():
++                self.pol.xy = np.array(
++                    list(self.pol.xy[:i + 1]) +
++                    [(event.xdata, event.ydata)] +
++                    list(self.pol.xy[i + 1:]))
++                self.line.set_data(zip(*self.pol.xy))
++                break
++
++        self.Redraw()
++
++    def _addVertex(self, event):
++
++        if self.empty_pol:
++            pt = (event.xdata, event.ydata)
++            self.pol.xy = np.array([pt, pt])
++            self._show(True)
++            self.empty_pol = False
++        else:
++            self.pol.xy = np.array(
++                        [(event.xdata, event.ydata)] +
++                        list(self.pol.xy[1:]) +
++                        [(event.xdata, event.ydata)])
++
++        self.line.set_data(zip(*self.pol.xy))
++        
++        self.Redraw()
++
++    def motion_notify_callback(self, event):
++        'on mouse movement'
++        if not self.mode == "move_vertex": return
++        if not self.showverts: return
++        if self.empty_pol: return
++        if self.moving_ver_idx is None: return
++        if event.inaxes is None: return
++        if event.button != 1: return
++
++        self.it += 1
++
++        x,y = event.xdata, event.ydata
++
++        self.pol.xy[self.moving_ver_idx] = x,y
++        if self.moving_ver_idx == 0:
++            self.pol.xy[len(self.pol.xy) - 1] = x,y
++        elif self.moving_ver_idx == len(self.pol.xy) - 1:
++            self.pol.xy[0] = x,y
++
++        self.line.set_data(zip(*self.pol.xy))
++
++        self.canvas.restore_region(self.background)
++
++        self.Redraw()
++
++class ModestImage(mi.AxesImage):
++    """
++    Computationally modest image class.
++
++    ModestImage is an extension of the Matplotlib AxesImage class
++    better suited for the interactive display of larger images. Before
++    drawing, ModestImage resamples the data array based on the screen
++    resolution and view window. This has very little affect on the
++    appearance of the image, but can substantially cut down on
++    computation since calculations of unresolved or clipped pixels
++    are skipped.
++
++    The interface of ModestImage is the same as AxesImage. However, it
++    does not currently support setting the 'extent' property. There
++    may also be weird coordinate warping operations for images that
++    I'm not aware of. Don't expect those to work either.
++
++    Author: Chris Beaumont <beaumont at hawaii.edu>
++    """
++    def __init__(self, minx=0.0, miny=0.0, *args, **kwargs):
++        if 'extent' in kwargs and kwargs['extent'] is not None:
++            raise NotImplementedError("ModestImage does not support extents")
++
++        self._full_res = None
++        self._sx, self._sy = None, None
++        self._bounds = (None, None, None, None)
++        self.minx = minx
++        self.miny = miny
++
++        super(ModestImage, self).__init__(*args, **kwargs)
++
++    def set_data(self, A):
++        """
++        Set the image array
++
++        ACCEPTS: numpy/PIL Image A
++        """
++        self._full_res = A
++        self._A = A
++
++        if self._A.dtype != np.uint8 and not np.can_cast(self._A.dtype,
++                                                         np.float):
++            raise TypeError("Image data can not convert to float")
++
++        if (self._A.ndim not in (2, 3) or
++            (self._A.ndim == 3 and self._A.shape[-1] not in (3, 4))):
++            raise TypeError("Invalid dimensions for image data")
++
++        self._imcache =None
++        self._rgbacache = None
++        self._oldxslice = None
++        self._oldyslice = None
++        self._sx, self._sy = None, None
++
++    def get_array(self):
++        """Override to return the full-resolution array"""
++        return self._full_res
++
++    def _scale_to_res(self):
++        """ Change self._A and _extent to render an image whose
++        resolution is matched to the eventual rendering."""
++
++        ax = self.axes
++        ext = ax.transAxes.transform([1, 1]) - ax.transAxes.transform([0, 0])
++        xlim, ylim = ax.get_xlim(), ax.get_ylim()
++        dx, dy = xlim[1] - xlim[0], ylim[1] - ylim[0]
++
++        y0 = max(self.miny, ylim[0] - 5)
++        y1 = min(self._full_res.shape[0] + self.miny, ylim[1] + 5)
++        x0 = max(self.minx, xlim[0] - 5)
++        x1 = min(self._full_res.shape[1] + self.minx, xlim[1] + 5)
++        y0, y1, x0, x1 = map(int, [y0, y1, x0, x1])
++
++        sy = int(max(1, min((y1 - y0) / 5., np.ceil(dy / ext[1]))))
++        sx = int(max(1, min((x1 - x0) / 5., np.ceil(dx / ext[0]))))
++
++        # have we already calculated what we need?
++        if sx == self._sx and sy == self._sy and \
++            x0 == self._bounds[0] and x1 == self._bounds[1] and \
++            y0 == self._bounds[2] and y1 == self._bounds[3]:
++            return
++
++        self._A = self._full_res[y0 - self.miny:y1 - self.miny:sy, 
++                                 x0 - self.minx:x1 - self.minx:sx]
++
++        x1 = x0 + self._A.shape[1] * sx
++        y1 = y0 + self._A.shape[0] * sy
++
++        self.set_extent([x0 - .5, x1 - .5, y0 - .5, y1 - .5])
++        self._sx = sx
++        self._sy = sy
++        self._bounds = (x0, x1, y0, y1)
++        self.changed()
++
++    def draw(self, renderer, *args, **kwargs):
++        self._scale_to_res()
++        super(ModestImage, self).draw(renderer, *args, **kwargs)
++
++def imshow(axes, X, cmap=None, norm=None, aspect=None,
++           interpolation=None, alpha=None, vmin=None, vmax=None,
++           origin=None, extent=None, shape=None, filternorm=1,
++           filterrad=4.0, imlim=None, resample=None, url=None, **kwargs):
++    """Similar to matplotlib's imshow command, but produces a ModestImage
++
++    Unlike matplotlib version, must explicitly specify axes
++    Author: Chris Beaumont <beaumont at hawaii.edu>
++    """
++
++    if not axes._hold:
++        axes.cla()
++    if norm is not None:
++        assert(isinstance(norm, mcolors.Normalize))
++    if aspect is None:
++        aspect = rcParams['image.aspect']
++    axes.set_aspect(aspect)
++
++    if extent:
++        minx=extent[0]
++        miny=extent[2]
++    else:
++        minx=0.0
++        miny=0.0
++
++    im = ModestImage(minx, miny, axes, cmap, norm, interpolation, origin, extent,
++                     filternorm=filternorm,
++                     filterrad=filterrad, resample=resample, **kwargs)
++
++    im.set_data(X)
++    im.set_alpha(alpha)
++    axes._set_artist_props(im)
++
++    if im.get_clip_path() is None:
++        # image does not already have clipping set, clip to axes patch
++        im.set_clip_path(axes.patch)
++
++    #if norm is None and shape is None:
++    #    im.set_clim(vmin, vmax)
++    if vmin is not None or vmax is not None:
++        im.set_clim(vmin, vmax)
++    else:
++        im.autoscale_None()
++    im.set_url(url)
++
++    # update ax.dataLim, and, if autoscaling, set viewLim
++    # to tightly fit the image, regardless of dataLim.
++    im.set_extent(im.get_extent())
++
++    axes.images.append(im)
++    im._remove_method = lambda h: axes.images.remove(h)
++
++    return im
++
++def MergeImg(cats_order, scatts, styles, output_queue):
++
++        start_time = time.clock()
++        cmap_time = 0
++        merge_time = 0
++        mask_time = 0
++        norm_time = 0
++        max_time = 0
++
++        init = True
++        merge_tmp = grass.tempfile()
++        for cat_id in cats_order:
++            if not scatts.has_key(cat_id):
++                continue
++            scatt = scatts[cat_id]
++            #print "color map %d" % cat_id
++            #TODO make more general
++            if cat_id != 0 and (styles[cat_id]['opacity'] == 0.0 or \
++               not styles[cat_id]['show']):
++                continue
++            if init:
++
++                b2_i = scatt['bands_info']['b1']
++                b1_i = scatt['bands_info']['b2']
++
++                full_extend = (b1_i['min'] - 0.5, b1_i['max'] + 0.5, b2_i['min'] - 0.5, b2_i['max'] + 0.5) 
++            
++            if cat_id == 0:
++                cmap = matplotlib.cm.jet
++                cmap.set_bad('w',1.)
++                cmap._init()
++                cmap._lut[len(cmap._lut) - 1, -1] = 0
++            else:
++                colors = styles[cat_id]['color'].split(":")
++
++                cmap = matplotlib.cm.jet
++                cmap.set_bad('w',1.)
++                cmap._init()
++                cmap._lut[len(cmap._lut) - 1, -1] = 0
++                cmap._lut[:, 0] = int(colors[0])/255.0
++                cmap._lut[:, 1] = int(colors[1])/255.0
++                cmap._lut[:, 2] = int(colors[2])/255.0
++
++            #if init:
++            tmp = time.clock()
++
++            masked_cat = np.ma.masked_less_equal(scatt['np_vals'], 0)
++            mask_time += time.clock() - tmp
++
++            tmp = time.clock()
++            vmax = np.amax(masked_cat)
++            max_time += time.clock() - tmp
++
++            tmp = time.clock()
++            masked_cat = np.uint8(masked_cat * (255.0 / float(vmax)))
++            norm_time += time.clock() - tmp
++
++            #print masked_cat
++            #print masked_cat.shape
++            #print masked_cat.mask.dtype
++            #
++            #print "colored_cat.shape"
++            #print colored_cat.shape
++            #merged_img = np.memmap(merge_tmp, dtype='uint8',, shape=colored_cat.shape)
++            tmp = time.clock()
++            cmap = np.uint8(cmap._lut * 255)
++            sh =masked_cat.shape
++
++            colored_cat = np.zeros(dtype='uint8', shape=(sh[0], sh[1], 4))
++            ApplyColormap(masked_cat, masked_cat.mask, cmap, colored_cat)
++
++            #colored_cat = np.uint8(cmap(masked_cat) * 255)
++            cmap_time += time.clock() - tmp
++
++            del masked_cat
++            del cmap
++            
++            #colored_cat[...,3] = np.choose(masked_cat.mask, (255, 0))
++
++            tmp = time.clock()
++            if init:
++                merged_img = np.memmap(merge_tmp, dtype='uint8', mode='w+', shape=colored_cat.shape)
++                merged_img[:] = colored_cat[:]
++                init = False
++            else:
++                MergeArrays(merged_img, colored_cat, styles[cat_id]['opacity'])
++
++            """
++                #c_img_a = np.memmap(grass.tempfile(), dtype="uint16", mode='w+', shape = shape) 
++                c_img_a = colored_cat.astype('uint16')[:,:,3] * styles[cat_id]['opacity']
++
++                #TODO apply strides and there will be no need for loop
++                #b = as_strided(a, strides=(0, a.strides[3], a.strides[3], a.strides[3]), shape=(3, a.shape[0], a.shape[1]))
++                
++                for i in range(3):
++                    merged_img[:,:,i] = (merged_img[:,:,i] * (255 - c_img_a) + colored_cat[:,:,i] * c_img_a) / 255;
++                merged_img[:,:,3] = (merged_img[:,:,3] * (255 - c_img_a) + 255 * c_img_a) / 255;
++                
++                del c_img_a
++            """
++            merge_time += time.clock() - tmp
++
++            del colored_cat
++
++        end_time =  time.clock() - start_time
++        #print "all time:%f" % (end_time)
++        #print "cmap_time:%f" % (cmap_time / end_time * 100.0 )
++        #print "merge_time:%f" % (merge_time / end_time * 100.0 )
++        #print "mask_time:%f" % (mask_time / end_time * 100.0 )
++        #print "nax_time:%f" % (max_time / end_time * 100.0 )
++        #print "norm_time:%f" % (norm_time / end_time * 100.0 )
++        
++        #output_queue.put((merged_img, full_extend))
++        return merged_img, full_extend 
+\ No newline at end of file
 Index: gui/wxpython/scatt_plot/controllers.py
 ===================================================================
 --- gui/wxpython/scatt_plot/controllers.py	(revision 0)
 +++ gui/wxpython/scatt_plot/controllers.py	(working copy)
-@@ -0,0 +1,893 @@
+@@ -0,0 +1,888 @@
 +"""!
 + at package scatt_plot.controllers
 +
@@ -660,11 +3685,9 @@
 +#TODO just for testing
 +import time
 +
-+#TODO
 +import wx
 +
 +from core.gcmd import GException, GError, GMessage, RunCommand
-+from core.gconsole import EVT_CMD_DONE
 +from core.settings import UserSettings
 +from scatt_plot.gthreading import gThread
 +from scatt_plot.scatt_core import Core, idBandsToidScatt
@@ -674,11 +3697,10 @@
 +import grass.script as grass
 +from grass.pydispatch.signal import Signal
 +
-+class ScattsManager(wx.EvtHandler):
++class ScattsManager:
 +    def __init__(self, guiparent, giface, iclass_mapwin = None):
 +        #TODO remove iclass parameter
 +
-+        wx.EvtHandler.__init__(self)
 +        self.giface = giface
 +        self.mapDisp  = giface.GetMapDisplay()
 +
@@ -692,14 +3714,13 @@
 +        self.show_add_scatt_plot = False
 +
 +        self.core = Core()
-+        self.scatts_dt, self.scatt_conds_dt = self.core.GetScattsData()
 +
 +        self.cats_mgr = CategoriesManager(self, self.core)
++        self.render_mgr = RenderingManager(scatt_mgr=self, cats_mgr=self.cats_mgr, core=self.core)
 +
-+        self.thread = gThread(self);
++        self.thread = gThread();
 +        
 +        self.plots = {}
-+        self.cats_to_update = []
 +
 +        self.plot_mode =  None
 +        self.pol_sel_mode = [False, None]
@@ -708,8 +3729,8 @@
 +
 +        self.cursorPlotMove = Signal("ScattsManager.cursorPlotMove")
 +
-+        self.renderingStarted = Signal("ScattsManager.renderingStarted")
-+        self.renderingFinished = Signal("ScattsManager.renderingFinished")
++        self.renderingStarted = self.render_mgr.renderingStarted
++        self.renderingFinished = self.render_mgr.renderingFinished
 +
 +        self.computingStarted = Signal("ScattsManager.computingStarted")
 +
@@ -720,21 +3741,8 @@
 +            self.digit_conn = IMapWinDigitConnection()
 +            self.iclass_conn = IMapDispConnection(scatt_mgr=self, cats_mgr=self.cats_mgr, giface=self.giface)
 +
-+        self.tasks_pids = {
-+                            'add_scatt' : [],
-+                            'set_data' : -1,
-+                            'set_data_add' : -1,
-+                            'set_edit_cat_data' : -1,
-+                            'mapwin_conn' : [],
-+                            'render_plots' : -1,
-+                            'render' : [],
-+                            'export_cat_rast' : []
-+                           }
-+
 +        self._initSettings()
 +
-+        self.Bind(EVT_CMD_DONE, self.OnThreadDone)
-+
 +        self.modeSet = Signal("ScattsManager.mondeSet")
 +
 +    def CleanUp(self):
@@ -743,7 +3751,8 @@
 +
 +        self.cats_mgr.CleanUp()
 +        for scatt_id, scatt in self.plots.items():
-+            scatt.CleanUp()
++            if scatt['scatt']:
++                scatt['scatt'].CleanUp()
 +
 +    def _initSettings(self):
 +        """!Initialization of settings (if not already defined)"""
@@ -766,61 +3775,6 @@
 +                                value = init[2],
 +                                overwrite = False)
 +
-+    def OnThreadDone(self, event):
-+        
-+        if event.exception:
-+            GError(str(event.exception))
-+            return
-+
-+        if event.pid in self.tasks_pids['mapwin_conn']:
-+            self.tasks_pids['mapwin_conn'].remove(event.pid)
-+            updated_cats = event.ret
-+
-+            for cat in updated_cats:
-+                if cat not in  self.cats_to_update:
-+                    self.cats_to_update.append(cat)
-+
-+            if not self.tasks_pids['mapwin_conn']:
-+                self.tasks_pids['render_plots'] = self.thread.GetId()
-+                self.thread.Run(callable = self.core.ComputeCatsScatts, 
-+                                cats_ids = self.cats_to_update[:])
-+                del self.cats_to_update[:]
-+ 
-+            return
-+
-+        if self.tasks_pids['render_plots'] == event.pid:
-+            self.RenderScattPlts()
-+            return
-+
-+        if event.pid in self.tasks_pids['render']:
-+            self.tasks_pids['render'].remove(event.pid)
-+            if not self.tasks_pids['render']:
-+                self.renderingFinished.emit()
-+            return
-+            
-+        if event.pid in self.tasks_pids['add_scatt']:
-+            self.tasks_pids['add_scatt'].remove(event.pid)
-+            self.AddScattPlotDone(event)
-+            return
-+
-+        if self.tasks_pids['set_data'] == event.pid:
-+            self.SetDataDone(event)
-+            return
-+        
-+        if self.tasks_pids['set_data_add'] == event.pid:
-+            self.SetDataDone(event)
-+            self.AddScattPlot()
-+            return
-+        
-+        if self.tasks_pids['set_edit_cat_data'] == event.pid:
-+            self.SetEditCatDataDone(event)
-+            return
-+
-+        if event.pid in self.tasks_pids['export_cat_rast']:
-+            self.cats_mgr.OnExportCatRastDone(event)
-+            return
-+
-+
 +    def SetData(self):
 +        self.iclass_conn.SetData()
 +
@@ -829,19 +3783,23 @@
 +        self.data_set = False
 +        
 +        if self.show_add_scatt_plot:
-+            self.tasks_pids['set_data_add'] = self.thread.GetId()
++            show_add=True
 +        else:
-+            self.tasks_pids['set_data'] = self.thread.GetId()
++            show_add=False
 +
-+        self.thread.Run(callable=self.core.SetData, bands=bands)
++        self.thread.Run(callable=self.core.SetData, bands=bands, 
++                        ondone=self.SetDataDone, userdata={"show_add" : show_add})
 +
 +    def SetDataDone(self, event):
 +        self.data_set = True
++
 +        self.iclass_conn.SyncCats()
++        if event.userdata['show_add']:
++          self.AddScattPlot()  
 +
 +    def SettingsUpdated(self, event):
 +        #TODO optimization
-+        self.RenderScattPlts()
++        self.render_mgr.RenderScattPlts()
 +
 +    def OnOutput(self, event):
 +        """!Print thread output according to debug level.
@@ -864,115 +3822,62 @@
 +        self.computingStarted.emit()
 +
 +        bands = self.core.GetBands()
-+        dlg = AddScattPlotDialog(parent = self.guiparent, bands = bands)
++
++        #added_bands_ids = []
++        #for scatt_id in self.plots):
++        #    added_bands_ids.append[idBandsToidScatt(scatt_id)]
++
++        self.digit_conn.Update()
++        dlg = AddScattPlotDialog(parent = self.guiparent, 
++                                 bands = bands,
++                                 added_scatts_ids = self.plots.keys())
 +        if dlg.ShowModal() == wx.ID_OK:
 +
-+            b_1, b_2 = dlg.GetBands()
++            scatt_ids = []
++            sel_bands = dlg.GetBands()
++
++            for b_1, b_2 in sel_bands:
 +           
-+            #TODO axes selection
-+            transpose = False
-+            if b_1 > b_2:
-+                transpose = True
-+                tmp_band = b_2
-+                b_2 = b_1
-+                b_1 = tmp_band
++                transpose = False
++                if b_1 > b_2:
++                    transpose = True
++                    tmp_band = b_2
++                    b_2 = b_1
++                    b_1 = tmp_band
 +
-+            self.scatt_id = idBandsToidScatt(b_1, b_2, len(bands))
-+            self._addScattPlot(self.scatt_id, transpose)
++                scatt_id = idBandsToidScatt(b_1, b_2, len(bands))
++                if self.plots.has_key(scatt_id):
++                    continue
++
++                self.plots[scatt_id] = {'transpose' : transpose,
++                                        'scatt' : None}
++                scatt_ids.append(scatt_id)
 +        
++            self._addScattPlot(scatt_ids)
++            
 +        dlg.Destroy()
-+
-+        self.digit_conn.Update()
 +         
-+    def _addScattPlot(self, scatt_id, transpose):
-+        if self.plots.has_key(scatt_id):
-+            GMessage(_("Scatter plot has been already added."))
-+            return
++    def _addScattPlot(self, scatt_ids):
++        self.thread.Run(callable=self.core.AddScattPlots,
++                        scatt_ids=scatt_ids, ondone=self.AddScattPlotDone)
 +
-+        self.tasks_pids['add_scatt'].append(self.thread.GetId())
-+        
-+        self.thread.Run(callable = self.core.AddScattPlot,
-+                        scatt_id = scatt_id, 
-+                        userdata = {'transpose' : transpose})
-+
-+    def RenderScattPlts(self, scatt_ids = None):
-+        if len(self.tasks_pids['render']) > 1:
-+            return 
-+        
-+        self.renderingStarted.emit()
-+        self.tasks_pids['render'].append(self.thread.GetId())
-+        self.thread.Run(callable = self._renderscattplts, scatt_ids = scatt_ids)
-+
-+    def _renderscattplts(self, scatt_ids):
-+        cats_attrs = self.cats_mgr.GetCategoriesAttrs()
-+        cats = self.cats_mgr.GetCategories()[:]
-+        cats.reverse()
-+        cats.insert(0, 0)
-+        for i_scatt_id, scatt in self.plots.items():
-+            if scatt_ids is not None and i_scatt_id not in scatt_ids:
-+                continue
-+
-+            scatt_dt = self.scatts_dt.GetScatt(i_scatt_id)
-+            if self._showConfEllipses():
-+                ellipses_dt = self.scatts_dt.GetEllipses(i_scatt_id, cats_attrs)
-+            else:
-+                ellipses_dt = {}
-+
-+            if self.pol_sel_mode[0]:
-+                self._getSelectedAreas(cats, i_scatt_id, scatt_dt, cats_attrs)
-+
-+            scatt.Plot(cats_order = cats, scatts = scatt_dt, ellipses = ellipses_dt, styles = cats_attrs)
-+
-+    def _showConfEllipses(self):
-+        return UserSettings.Get(group='scatt', 
-+                                key="ellipses", 
-+                                subkey="show_ellips")
-+
-+    def _getSelectedAreas(self, cats_order, scatt_id, scatt_dt, cats_attrs):
-+
-+        cat_id = self.cats_mgr.GetSelectedCat()
-+        if not cat_id:
-+            return
-+
-+        sel_a_cat_id = max(cats_attrs.keys()) + 1        
-+
-+        s = self.scatt_conds_dt.GetScatt(scatt_id, [cat_id])
-+        if not s:
-+            return
-+
-+        cats_order.append(sel_a_cat_id)
-+
-+        col = UserSettings.Get(group='scatt', 
-+                                 key='selection', 
-+                                 subkey='sel_area')
-+
-+        col = ":".join(map(str, col))
-+        opac = UserSettings.Get(group='scatt', 
-+                                key='selection', 
-+                                subkey='sel_area_opacty') / 100.0
-+
-+        cats_attrs[sel_a_cat_id] = {'color' : col,
-+                                    'opacity' : opac,
-+                                    'show' : True}
-+
-+        scatt_dt[sel_a_cat_id] = s[cat_id]
-+
 +    def AddScattPlotDone(self, event):
-+        
-+        transpose = event.userdata['transpose']
-+        scatt_id = event.kwds['scatt_id']
 +
-+        #TODO guiparent - not very good
-+        self.plots[scatt_id] = self.guiparent.NewScatterPlot(scatt_id = scatt_id, transpose = transpose)
++        scatt_ids = event.kwds['scatt_ids']
++        for s_id in scatt_ids:
++            trans = self.plots[s_id]['transpose']
++            self.plots[s_id]['scatt'] = self.guiparent.NewScatterPlot(scatt_id=s_id, 
++                                                                      transpose=trans)
 +
-+        self.plots[scatt_id].plotClosed.connect(self.PlotClosed)
-+        self.plots[scatt_id].cursorMove.connect(lambda x, y: self.cursorPlotMove.emit(x = x, y = y))
++            self.plots[s_id]['scatt'].plotClosed.connect(self.PlotClosed)
++            self.plots[s_id]['scatt'].cursorMove.connect(lambda x, y: 
++                                                          self.cursorPlotMove.emit(x=x, y=y))
 +
-+        if self.plot_mode:
-+            self.plots[scatt_id].SetMode(self.plot_mode)
-+            self.plots[scatt_id].ZoomToExtend()
++            if self.plot_mode:
++                self.plots[s_id]['scatt'].SetMode(self.plot_mode)
++                self.plots[s_id]['scatt'].ZoomToExtend()
 +
-+        self.RenderScattPlts(scatt_ids = [scatt_id])
++        self.render_mgr.RenderScattPlts(scatt_ids = scatt_ids)
 +
 +    def PlotClosed(self, scatt_id):
 +        del self.plots[scatt_id]
@@ -981,24 +3886,29 @@
 +
 +        self.plot_mode = mode
 +        for scatt in self.plots.itervalues():
-+            scatt.SetMode(mode)
++            if scatt['scatt']:
++                scatt['scatt'].SetMode(mode)
 +
 +        self.modeSet.emit(mode = mode)
 +
 +    def ActivateSelectionPolygonMode(self, activate):
 +        self.pol_sel_mode[0] = activate
 +        for scatt in self.plots.itervalues():
-+            scatt.SetSelectionPolygonMode(activate)
++            if not scatt['scatt']:
++                continue
++            scatt['scatt'].SetSelectionPolygonMode(activate)
 +            if not activate and self.plot_mode not in ['zoom', 'pan', 'zoom_extend']:
 +                self.SetPlotsMode(None)
 +
-+        self.RenderScattPlts()
++        self.render_mgr.RenderScattPlts()
 +        return activate
 +
 +    def ProcessSelectionPolygons(self, process_mode):        
 +        scatts_polygons = {}        
 +        for scatt_id, scatt in self.plots.iteritems():
-+            coords = scatt.GetCoords()
++            if not scatt['scatt']:
++                continue
++            coords = scatt['scatt'].GetCoords()
 +            if coords is not None:
 +                scatts_polygons[scatt_id] = coords
 +
@@ -1025,16 +3935,15 @@
 +        if not sel_cat_id:
 +            return
 +
-+        #for scatt in self.plots.itervalues():
-+        #    scatt.SetEmpty()
++        for scatt in self.plots.itervalues():
++            scatt['scatt'].SetEmpty()
 +
 +        self.computingStarted.emit()
 +
-+        self.tasks_pids['set_edit_cat_data'] = self.thread.GetId()
 +        self.thread.Run(callable = self.core.UpdateCategoryWithPolygons, 
 +                        cat_id = sel_cat_id,
 +                        scatts_pols = scatts_polygons,
-+                        value = value)
++                        value = value, ondone=self.SetEditCatDataDone)
 +
 +    def SetEditCatDataDone(self, event):
 +        if event.exception:
@@ -1043,7 +3952,7 @@
 +
 +        cat_id = event.ret
 +
-+        self.RenderScattPlts()
++        self.render_mgr.RenderScattPlts()
 +        self.iclass_conn.RenderCatRast(cat_id)
 +            
 +    def DigitDataChanged(self, vectMap, digit):
@@ -1057,6 +3966,92 @@
 +    def GetCategoriesManager(self):
 +        return self.cats_mgr
 +
++class RenderingManager:
++
++    def __init__(self, scatt_mgr, cats_mgr, core):
++        self.scatt_mgr = scatt_mgr
++        self.cats_mgr = cats_mgr
++        self.core = core
++        self.scatts_dt, self.scatt_conds_dt = self.core.GetScattsData()
++
++        self.scatts_to_render = {}
++        self.render_queue = []
++
++        self.renderingStarted = Signal("ScattsManager.renderingStarted")
++        self.renderingFinished = Signal("ScattsManager.renderingFinished")
++
++    def RenderScattPlts(self, scatt_ids = None):
++        if len(self.render_queue) > 1:
++            return 
++        
++        self.renderingStarted.emit()
++        self.render_queue.append(self.scatt_mgr.thread.GetId())
++        self.scatt_mgr.thread.Run(callable = self._renderscattplts, scatt_ids = scatt_ids,
++                                  ondone=self.RenderingDone)
++
++    def _renderscattplts(self, scatt_ids):
++        cats_attrs = self.cats_mgr.GetCategoriesAttrs()
++        cats = self.cats_mgr.GetCategories()[:]
++        cats.reverse()
++        cats.insert(0, 0)
++        for i_scatt_id, scatt in self.scatt_mgr.plots.items():
++            if scatt_ids is not None and \
++               i_scatt_id not in scatt_ids:
++                continue
++            if not scatt['scatt']:
++                continue
++
++            scatt_dt = self.scatts_dt.GetScatt(i_scatt_id)
++            if self._showConfEllipses():
++                ellipses_dt = self.scatts_dt.GetEllipses(i_scatt_id, cats_attrs)
++            else:
++                ellipses_dt = {}
++
++            if self.scatt_mgr.pol_sel_mode[0]:
++                self._getSelectedAreas(cats, i_scatt_id, scatt_dt, cats_attrs)
++
++            scatt['scatt'].Plot(cats_order = cats, scatts = scatt_dt, ellipses = ellipses_dt, styles = cats_attrs)
++
++    def RenderingDone(self, event):
++        self.render_queue.remove(event.pid)
++        if not self.render_queue:    
++                self.renderingFinished.emit()
++
++    def _getSelectedAreas(self, cats_order, scatt_id, scatt_dt, cats_attrs):
++
++        cat_id = self.cats_mgr.GetSelectedCat()
++        if not cat_id:
++            return
++
++        sel_a_cat_id = max(cats_attrs.keys()) + 1        
++
++        s = self.scatt_conds_dt.GetScatt(scatt_id, [cat_id])
++        if not s:
++            return
++
++        cats_order.append(sel_a_cat_id)
++
++        col = UserSettings.Get(group='scatt', 
++                                 key='selection', 
++                                 subkey='sel_area')
++
++        col = ":".join(map(str, col))
++        opac = UserSettings.Get(group='scatt', 
++                                key='selection', 
++                                subkey='sel_area_opacty') / 100.0
++
++        cats_attrs[sel_a_cat_id] = {'color' : col,
++                                    'opacity' : opac,
++                                    'show' : True}
++
++        scatt_dt[sel_a_cat_id] = s[cat_id]
++
++
++    def _showConfEllipses(self):
++        return UserSettings.Get(group='scatt', 
++                                key="ellipses", 
++                                subkey="show_ellips")
++
 +class CategoriesManager:
 +
 +    def __init__(self, scatt_mgr, core):
@@ -1099,7 +4094,7 @@
 +
 +        self.cats_ids.insert(new_pos, cat_id)
 +
-+        self.scatt_mgr.RenderScattPlts()
++        self.scatt_mgr.render_mgr.RenderScattPlts()
 +        return True
 +
 +    def _addCategory(self, cat_id):
@@ -1158,7 +4153,7 @@
 +            self.cats[cat_id][k] = v
 +
 +        if render:
-+            self.scatt_mgr.RenderScattPlts()
++            self.scatt_mgr.render_mgr.RenderScattPlts()
 +        
 +        if update_cat_rast:
 +            self.scatt_mgr.iclass_conn.UpdateCategoryRaster(cat_id, update_cat_rast)
@@ -1179,7 +4174,7 @@
 +    def SetSelectedCat(self, cat_id):
 +        self.sel_cat_id = cat_id
 +        if self.scatt_mgr.pol_sel_mode[0]:
-+            self.scatt_mgr.RenderScattPlts()
++            self.scatt_mgr.render_mgr.RenderScattPlts()
 +
 +    def GetSelectedCat(self):
 +        return self.sel_cat_id
@@ -1213,11 +4208,11 @@
 +            self.exportCatRast = dlg.GetRasterName()
 +            dlg.Destroy()
 +
-+            self.scatt_mgr.tasks_pids['export_cat_rast'].append(self.scatt_mgr.thread.GetId())
 +            self.scatt_mgr.thread.Run(callable=self.core.ExportCatRast,
 +                                      userdata={'name' : cat_attrs['name']},
 +                                      cat_id=cat_id,
-+                                      rast_name=self.exportCatRast)
++                                      rast_name=self.exportCatRast, 
++                                      ondone=self.cats_mgr.OnExportCatRastDone)
 +
 +    def OnExportCatRastDone(self, event):
 +        ret, err = event.ret
@@ -1242,13 +4237,16 @@
 +        self.scatt_mgr = scatt_mgr
 +        self.cats_mgr = scatt_mgr.cats_mgr
 +
++        self.cats_to_update = []
++        self.tasks_pids = {'mapwin_conn' : []}
++
 +        self.thread = self.scatt_mgr.thread
 +
 +        #TODO
 +        self.mapWin.parent.toolbars["vdigit"].editingStarted.connect(self.DigitDataChanged)
 +
 +    def Update(self):
-+        self.thread.Run(callable=self.scatt_rast_updater.SynchWithMap)
++        self.thread.Run(callable=self.scatt_rast_updater.SyncWithMap)
 +
 +    def _connectSignals(self):
 +        self.digit.featureAdded.connect(self.AddFeature)
@@ -1264,36 +4262,39 @@
 +            return
 +        self.scatt_mgr.computingStarted.emit()
 +
-+        self.scatt_mgr.tasks_pids['mapwin_conn'].append(self.thread.GetId())
++        self.tasks_pids['mapwin_conn'].append(self.thread.GetId())
 +        self.thread.Run(callable = self.scatt_rast_updater.EditedFeature, 
 +                        new_bboxs = new_bboxs, 
 +                        old_bboxs = [], 
 +                        old_areas_cats = [],
-+                        new_areas_cats = new_areas_cats)
++                        new_areas_cats = new_areas_cats,
++                        ondone=self.OnDone)
 +
 +    def DeleteAreas(self, old_bboxs, old_areas_cats):
 +        if not self.scatt_mgr.data_set:
 +            return
 +        self.scatt_mgr.computingStarted.emit()
 +
-+        self.scatt_mgr.tasks_pids['mapwin_conn'].append(self.thread.GetId())
++        self.tasks_pids['mapwin_conn'].append(self.thread.GetId())
 +        self.thread.Run(callable = self.scatt_rast_updater.EditedFeature, 
 +                        new_bboxs = [], 
 +                        old_bboxs = old_bboxs, 
 +                        old_areas_cats = old_areas_cats,
-+                        new_areas_cats = [])
++                        new_areas_cats = [],
++                        ondone=self.OnDone)
 +
 +    def EditedFeature(self, new_bboxs, new_areas_cats, old_bboxs, old_areas_cats):
 +        if not self.scatt_mgr.data_set:
 +            return
 +        self.scatt_mgr.computingStarted.emit()
 +
-+        self.scatt_mgr.tasks_pids['mapwin_conn'].append(self.thread.GetId())
++        self.tasks_pids['mapwin_conn'].append(self.thread.GetId())
 +        self.thread.Run(callable = self.scatt_rast_updater.EditedFeature, 
 +                        new_bboxs = new_bboxs, 
 +                        old_bboxs = old_bboxs, 
 +                        old_areas_cats = old_areas_cats,
-+                        new_areas_cats = new_areas_cats)
++                        new_areas_cats = new_areas_cats,
++                        ondone=self.OnDone)
 +
 +    def DigitDataChanged(self, vectMap, digit):
 +
@@ -1306,6 +4307,22 @@
 +
 +        self._connectSignals()
 +
++    def OnDone(self, event):
++        self.tasks_pids['mapwin_conn'].remove(event.pid)
++        updated_cats = event.ret
++        for cat in updated_cats:
++            if cat not in  self.cats_to_update:
++                self.cats_to_update.append(cat)
++
++        if not self.tasks_pids['mapwin_conn']:
++            self.tasks_pids['render_plots'] = self.thread.GetId()
++            self.thread.Run(callable = self.scatt_mgr.core.ComputeCatsScatts, 
++                            cats_ids = self.cats_to_update[:], ondone=self.Render)
++            del self.cats_to_update[:]
++
++    def Render(self, event):
++        self.scatt_mgr.render_mgr.RenderScattPlts()
++
 +class IMapDispConnection:
 +    def __init__(self, scatt_mgr, cats_mgr, giface):
 +        self.scatt_mgr = scatt_mgr
@@ -1416,6 +4433,9 @@
 +            return
 +
 +        cat_rast = self.scatt_mgr.core.GetCatRast(cat_id)
++        if not cat_rast:
++            return
++
 +        if not grass.find_file(cat_rast, element = 'cell', mapset = '.')['file']:
 +            return
 +        cats_attrs = self.cats_mgr.GetCategoryAttrs(cat_id)
@@ -1538,7 +4558,7 @@
 ===================================================================
 --- gui/wxpython/scatt_plot/gthreading.py	(revision 0)
 +++ gui/wxpython/scatt_plot/gthreading.py	(working copy)
-@@ -0,0 +1,134 @@
+@@ -0,0 +1,125 @@
 +"""!
 + at package scatt_plot.gthreading
 +
@@ -1557,18 +4577,21 @@
 +import time
 +import threading
 +import Queue
++from core.gconsole import EVT_CMD_DONE
 +
 +import wx
 +from core.gconsole import wxCmdRun, wxCmdDone, wxCmdPrepare
 +
-+class gThread(threading.Thread):
++class gThread(threading.Thread, wx.EvtHandler):
 +    """!Thread for GRASS commands"""
 +    requestId = 0
 +
-+    def __init__(self, receiver, requestQ=None, resultQ=None, **kwds):
++    def __init__(self, requestQ=None, resultQ=None, **kwds):
 +        """!
 +        @param receiver event receiver (used in PostEvent)
 +        """
++        wx.EvtHandler.__init__(self)
++
 +        threading.Thread.__init__(self, **kwds)
 +
 +        if requestQ is None:
@@ -1583,9 +4606,9 @@
 +
 +        self.setDaemon(True)
 +
-+        self.receiver = receiver
 +        self._want_abort_all = False
 +
++        self.Bind(EVT_CMD_DONE, self.OnDone)
 +        self.start()
 +
 +    def Run(self, *args, **kwds):
@@ -1613,7 +4636,7 @@
 +        os.environ['GRASS_MESSAGE_FORMAT'] = 'gui'
 +        while True:
 +            requestId, args, kwds = self.requestQ.get()
-+            for key in ('callable', 'onDone', 'onPrepare', 'userdata'):
++            for key in ('callable', 'ondone', 'userdata'):
 +                if key in kwds:
 +                    vars()[key] = kwds[key]
 +                    del kwds[key]
@@ -1628,24 +4651,10 @@
 +            #        self._want_abort_all = False
 +
 +            # prepare
-+            if self.receiver:
-+                event = wxCmdPrepare(type = 'method',
-+                                     time=requestTime,
-+                                     pid=requestId)
-+
-+                wx.PostEvent(self.receiver, event)
-+
-+                # run command
-+                event = wxCmdRun(type = 'method',
-+                                 pid=requestId)
-+
-+                wx.PostEvent(self.receiver, event)
-+
++            ret = None
++            exception = None
 +            time.sleep(.1)
 +
-+            ret = None
-+            exception = None
-+            
 +            #to
 +            #try:
 +            ret = vars()['callable'](*args, **kwds)
@@ -1654,18 +4663,20 @@
 +
 +            self.resultQ.put((requestId, ret))
 +
-+            time.sleep(.1)
++            event = wxCmdDone(ondone=vars()['ondone'],
++                              kwds=kwds,
++                              args=args, #TODO expand args to kwds
++                              ret=ret,
++                              exception=exception,
++                              userdata=vars()['userdata'],
++                              pid=requestId)
 +
-+            if self.receiver:
-+                event = wxCmdDone(kwds=kwds,
-+                                  args=args, #TODO expand args to kwds
-+                                  ret=ret,
-+                                  exception=exception,
-+                                  userdata=vars()['userdata'],
-+                                  pid=requestId)
++            # send event
++            wx.PostEvent(self, event)
 +
-+                # send event
-+                wx.PostEvent(self.receiver, event)
++    def OnDone(self, event):
++        if event.ondone:
++            event.ondone(event)
 +
 +    def abort(self, abortall=True):
 +        """!Abort command(s)"""
@@ -1678,7 +4689,7 @@
 ===================================================================
 --- gui/wxpython/scatt_plot/dialogs.py	(revision 0)
 +++ gui/wxpython/scatt_plot/dialogs.py	(working copy)
-@@ -0,0 +1,419 @@
+@@ -0,0 +1,468 @@
 +"""!
 + at package scatt_plot.dialogs
 +
@@ -1704,20 +4715,23 @@
 +import grass.script as grass
 +
 +from core import globalvar
-+from core.gcmd import GError
++from core.gcmd import GMessage
 +from core.settings import UserSettings
 +
 +class AddScattPlotDialog(wx.Dialog):
 +
-+    def __init__(self, parent, bands, id  = wx.ID_ANY):
++    def __init__(self, parent, bands, added_scatts_ids, id  = wx.ID_ANY):
 +        
-+        wx.Dialog.__init__(self, parent, title = ("Add scatter plot"), id = id)
++        wx.Dialog.__init__(self, parent, title = ("Add scatter plots"), id = id)
 +
++        self.added_scatts_ids = added_scatts_ids
 +        self.bands = bands
 +
 +        self.x_band = None
 +        self.y_band = None
 +
++        self.added_bands_ids = []
++        self.sel_bands_ids = []
 +        self._createWidgets()
 +
 +    def _createWidgets(self):
@@ -1725,22 +4739,27 @@
 +        self.labels = {}
 +        self.params = {}
 +
-+        self.band_1_label = wx.StaticText(parent = self, id = wx.ID_ANY, label = _("%s axis:" % "x"))
++        self.band_1_label = wx.StaticText(parent = self, id = wx.ID_ANY, label = _("x axis:"))
 +
 +        self.band_1_ch = wx.ComboBox(parent = self, id = wx.ID_ANY,
 +                                     choices = self.bands,
 +                                     style = wx.CB_READONLY, size = (350, 30))
 +
-+        self.band_2_label = wx.StaticText(parent = self, id = wx.ID_ANY, label = _("%s axis:" % "y"))
++        self.band_2_label = wx.StaticText(parent = self, id = wx.ID_ANY, label = _("y axis:"))
 +
 +        self.band_2_ch = wx.ComboBox(parent = self, id = wx.ID_ANY,
 +                                     choices = self.bands,
 +                                     style = wx.CB_READONLY, size = (350, 30))
 +
++        self.scattsBox = wx.ListBox(parent = self,  id = wx.ID_ANY, size = (-1, 150),
++                                    style = wx.LB_MULTIPLE | wx.LB_NEEDED_SB)
++
 +        # buttons
-+        self.btn_close = wx.Button(parent = self, id = wx.ID_CANCEL)
++        self.btn_add = wx.Button(parent=self, id=wx.ID_ANY, label = _("Add"))
++        self.btn_remove = wx.Button(parent=self, id=wx.ID_ANY, label = _("Remove"))
 +        
-+        self.btn_ok = wx.Button(parent = self, id = wx.ID_OK, label = _("&OK"))
++        self.btn_close = wx.Button(parent=self, id=wx.ID_CANCEL)        
++        self.btn_ok = wx.Button(parent=self, id=wx.ID_OK, label = _("&OK"))
 +
 +        self._layout()
 +
@@ -1757,22 +4776,34 @@
 +        dialogSizer.Add(item = self._addSelectSizer(title = self.band_2_label, 
 +                                                    sel = self.band_2_ch))
 +
++
++        dialogSizer.Add(item=self.btn_add, proportion=0,  flag = wx.TOP, border = 5)
++
++        box = wx.StaticBox(self, id = wx.ID_ANY,
++                           label = " %s " % _("Bands of scatter plots to be added (x y):"))
++        sizer = wx.StaticBoxSizer(box, wx.VERTICAL)
++
++        sizer.Add(item=self.scattsBox, proportion=1, flag=wx.EXPAND | wx.TOP, border=5)
++        sizer.Add(item=self.btn_remove, proportion=0, flag=wx.TOP, border = 5)
++
++        dialogSizer.Add(item=sizer, proportion=1,  flag = wx.EXPAND | wx.TOP, border = 5)
++
 +        # buttons
 +        self.btnsizer = wx.BoxSizer(orient = wx.HORIZONTAL)
 +
 +        self.btnsizer.Add(item = self.btn_close, proportion = 0,
-+                          flag = wx.ALL | wx.ALIGN_CENTER,
++                          flag = wx.RIGHT | wx.LEFT | wx.ALIGN_CENTER,
 +                          border = 10)
 +        
 +        self.btnsizer.Add(item = self.btn_ok, proportion = 0,
-+                          flag = wx.ALL | wx.ALIGN_CENTER,
++                          flag = wx.RIGHT | wx.LEFT | wx.ALIGN_CENTER,
 +                          border = 10)
 +
 +        dialogSizer.Add(item = self.btnsizer, proportion = 0,
-+                        flag = wx.ALIGN_CENTER)
++                        flag = wx.ALIGN_CENTER | wx.TOP, border = 5)
 +
 +        border.Add(item = dialogSizer, proportion = 0,
-+                   flag = wx.ALL, border = 5)
++                   flag = wx.LEFT | wx.RIGHT | wx.BOTTOM, border = 10)
 +
 +        self.SetSizer(border)
 +        self.Layout()
@@ -1781,7 +4812,17 @@
 +        # bindings
 +        self.btn_close.Bind(wx.EVT_BUTTON, self.OnClose)
 +        self.btn_ok.Bind(wx.EVT_BUTTON, self.OnOk)
++        self.btn_add.Bind(wx.EVT_BUTTON, self.OnAdd)
++        self.btn_remove.Bind(wx.EVT_BUTTON, self.OnRemoveLayer)
 +
++    def OnOk(self, event):
++        
++        if not self.GetBands():
++            GMessage(parent=self, message=_("No scatter plots selected."))
++            return
++
++        event.Skip()
++
 +    def _addSelectSizer(self, title, sel): 
 +        """!Helper layout function.
 +        """
@@ -1789,17 +4830,21 @@
 +
 +        selTitleSizer = wx.BoxSizer(wx.HORIZONTAL)
 +        selTitleSizer.Add(item = title, proportion = 1,
-+                          flag = wx.LEFT | wx.TOP | wx.EXPAND, border = 5)
++                          flag = wx.TOP | wx.EXPAND, border = 5)
 +
 +        selSizer.Add(item = selTitleSizer, proportion = 0,
 +                     flag = wx.EXPAND)
 +
 +        selSizer.Add(item = sel, proportion = 1,
-+                     flag = wx.EXPAND | wx.ALL| wx.ALIGN_CENTER_VERTICAL,
++                     flag = wx.EXPAND | wx.TOP| wx.ALIGN_CENTER_VERTICAL,
 +                     border = 5)
 +
 +        return selSizer
 +
++    def GetBands(self):
++        """!Get layers"""
++        return self.sel_bands_ids
++
 +    def OnClose(self, event):
 +        """!Close dialog
 +        """
@@ -1807,34 +4852,49 @@
 +            self.Destroy()
 +        event.Skip()
 +
-+    def OnOk(self, event):
++    def OnRemoveLayer(self, event):
++        """!Remove layer from listbox"""
++        while self.scattsBox.GetSelections():
++            sel = self.scattsBox.GetSelections()[0]
++            self.scattsBox.Delete(sel)
++            self.sel_bands_ids.pop(sel)
++
++    def OnAdd(self, event):
 +        """!
 +        """
 +        b_x = self.band_1_ch.GetSelection()
 +        b_y = self.band_2_ch.GetSelection()
 +
-+        err = True
-+
 +        if b_x < 0 or b_y < 0:
-+            GError(_("Select both x and y bands."))
-+        elif b_y == b_x:
-+            GError(_("Selected bands must be different."))
-+        else:
-+            err = False        
++            GMessage(parent=self, message=_("Select both x and y bands."))
++            return
++        if b_y == b_x:
++            GMessage(parent=self, message=_("Selected bands must be different."))
++            return
 +
-+        if err:
-+            self.band_y = None
-+            self.band_x = None
++        scatt_id = idBandsToidScatt(b_x, b_y, len(self.bands))
++        if scatt_id in self.added_scatts_ids:
++            GMessage(parent=self, 
++                     message=_("Scatter plot with same band combination (regardless x y order) " 
++                               "is already displayed."))
 +            return
 +
-+        self.band_y = b_y
-+        self.band_x = b_x
++        if [b_x, b_y] in self.sel_bands_ids or [b_y, b_x] in self.sel_bands_ids:
++            GMessage(parent=self, 
++                     message=_("Scatter plot with same bands combination (regardless x y order) " 
++                               "has been already added into the list."))
++            return
 +
++        self.sel_bands_ids.append([b_x, b_y])
++
++        b_x_str = self.band_1_ch.GetStringSelection()
++        b_y_str = self.band_2_ch.GetStringSelection()
++
++        text = b_x_str + " " + b_y_str
++
++        self.scattsBox.Append(text)
 +        event.Skip()
 +
-+    def GetBands(self):
-+        return (self.band_x, self.band_y)
-+
 +class ExportCategoryRaster(wx.Dialog):
 +    def __init__(self, parent, title, rasterName = None, id = wx.ID_ANY,
 +                 style = wx.DEFAULT_DIALOG_STYLE | wx.RESIZE_BORDER,
@@ -2373,7 +5433,7 @@
 ===================================================================
 --- gui/wxpython/scatt_plot/scatt_core.py	(revision 0)
 +++ gui/wxpython/scatt_plot/scatt_core.py	(working copy)
-@@ -0,0 +1,813 @@
+@@ -0,0 +1,811 @@
 +"""!
 + at package scatt_plot.scatt_plot
 +
@@ -2450,9 +5510,10 @@
 +    def GetCatRast(self, cat_id):
 +        return self.scatts_dt.GetCatRast(cat_id)
 +
-+    def AddScattPlot(self, scatt_id):
++    def AddScattPlots(self, scatt_ids):
 +    
-+        self.scatts_dt.AddScattPlot(scatt_id = scatt_id)
++        for s_id in scatt_ids:
++            self.scatts_dt.AddScattPlot(scatt_id = s_id)
 +
 +        cats_ids = self.scatts_dt.GetCategories()
 +        self.ComputeCatsScatts(cats_ids)
@@ -2471,12 +5532,8 @@
 +            bbox[k] = self._validExtend(v)
 +
 +        arr[bbox['btm_y'] : bbox['up_y'], bbox['btm_x'] : bbox['up_x']] = value
-+        #arr.flush()
-+        #del arr
 +
 +        self.ComputeCatsScatts([cat_id])
-+        #print "time"
-+        #print time.clock() - start_time
 +        return cat_id
 +
 +    def ComputeCatsScatts(self, cats_ids):
@@ -2568,7 +5625,7 @@
 +    def SetVectMap(self, vectMap):
 +        self.vectMap = vectMap
 +
-+    def SynchWithMap(self):
++    def SyncWithMap(self):
 +        #TODO possible optimization - bbox only of vertex and its two neighbours
 +
 +        region = self.an_data.GetRegion()
@@ -3109,7 +6166,9 @@
 +        self.cats_rasts_conds = {}
 +
 +    def GetCatRast(self, cat_id):
-+        return self.cats_rasts[cat_id]
++        if self.cats_rasts.has_key(cat_id):
++            return self.cats_rasts[cat_id]
++        return None
 +
 +    def GetCatRastCond(self, cat_id):
 +        return self.cats_rasts_conds[cat_id]
@@ -3177,7 +6236,7 @@
 +def idBandsToidScatt(band_1_id, band_2_id, n_bands):
 +
 +    if band_2_id <  band_1_id:
-+        tmp = band_1
++        tmp = band_1_id
 +        band_1_id = band_2_id
 +        band_2_id = tmp
 +
@@ -3186,7 +6245,7 @@
 +    scatt_id = (band_1_id * (2 * n_b1 + 1) - band_1_id * band_1_id) / 2 + band_2_id - band_1_id - 1
 +
 +    return scatt_id
-+
+\ No newline at end of file
 Index: gui/wxpython/scatt_plot/core_c.py
 ===================================================================
 --- gui/wxpython/scatt_plot/core_c.py	(revision 0)
@@ -3428,7 +6487,7 @@
 ===================================================================
 --- gui/wxpython/scatt_plot/frame.py	(revision 0)
 +++ gui/wxpython/scatt_plot/frame.py	(working copy)
-@@ -0,0 +1,815 @@
+@@ -0,0 +1,811 @@
 +"""!
 + at package scatt_plot.dialogs
 +
@@ -3579,7 +6638,9 @@
 +        pass
 +
 +    def _createCategoryToolbar(self, parent):
-+        return None
++        return CategoryToolbar(parent=parent,
++                               scatt_mgr=self.scatt_mgr, 
++                               cats_list=self.cats_list)
 +
 +class IScattDialog(wx.Dialog):
 +    def __init__(self, parent, giface, title=_("GRASS GIS Interactive Scatter Plot Tool"),
@@ -3608,11 +6669,6 @@
 +        IClassIScattPanel.__init__(self, parent=parent, giface=giface,
 +                                         id=id, style=style, **kwargs)
 +
-+    def _createCategoryToolbar(self, parent):
-+        return CategoryToolbar(parent=parent,
-+                               scatt_mgr=self.scatt_mgr, 
-+                               cats_list=self.cats_list)
-+
 +    def _createScattMgr(self, guiparent, giface, iclass_mapwin):
 +        return ScattsManager(guiparent = self, giface = giface)
 +
@@ -4227,7 +7283,6 @@
 +        band_1 = self.band_1_ch.GetSelection()
 +        band_2 = self.band_2_ch.GetSelection()
 +
-+
 +        if band_1 == band_2:
 +            GError(_("Selected bands must be different."))
 +            return
@@ -4244,2874 +7299,3 @@
 +
 +    def GetScattId(self):
 +        return self.scatt_id
-Index: gui/wxpython/scatt_plot/__init__.py
-===================================================================
---- gui/wxpython/scatt_plot/__init__.py	(revision 0)
-+++ gui/wxpython/scatt_plot/__init__.py	(working copy)
-@@ -0,0 +1,11 @@
-+all = [
-+    'dialogs',
-+    'controllers',
-+    'frame',
-+    'gthreading',
-+    'plots',
-+    'scatt_core',
-+    'toolbars',
-+    'scatt_core',
-+    'core_c',
-+    ]
-Index: gui/wxpython/scatt_plot/plots.py
-===================================================================
---- gui/wxpython/scatt_plot/plots.py	(revision 0)
-+++ gui/wxpython/scatt_plot/plots.py	(working copy)
-@@ -0,0 +1,943 @@
-+"""!
-+ at package scatt_plot.dialogs
-+
-+ at brief Ploting widgets.
-+
-+Classes:
-+
-+(C) 2013 by the GRASS Development Team
-+
-+This program is free software under the GNU General Public License
-+(>=v2). Read the file COPYING that comes with GRASS for details.
-+
-+ at author Stepan Turek <stepan.turek seznam.cz> (mentor: Martin Landa)
-+"""
-+import wx
-+import numpy as np
-+from math import ceil
-+#TODO testing
-+import time
-+from multiprocessing import Process, Queue
-+
-+from copy import deepcopy
-+from scatt_plot.core_c import MergeArrays, ApplyColormap
-+from core.settings import UserSettings
-+
-+try:
-+    import matplotlib
-+    matplotlib.use('WXAgg')
-+    from matplotlib.figure import Figure
-+    from matplotlib.backends.backend_wxagg import \
-+    FigureCanvasWxAgg as FigCanvas
-+    from matplotlib.lines import Line2D
-+    from matplotlib.artist import Artist
-+    from matplotlib.mlab import dist_point_to_segment
-+    from matplotlib.patches import Polygon, Ellipse, Rectangle
-+    import matplotlib.image as mi
-+    import matplotlib.colors as mcolors
-+    import matplotlib.cbook as cbook
-+except ImportError as e:
-+    raise ImportError(_("Unable to import matplotlib (try to install it).\n%s") % e)
-+
-+import grass.script as grass
-+from grass.pydispatch.signal import Signal
-+
-+class ScatterPlotWidget(wx.Panel):
-+    def __init__(self, parent, scatt_id, scatt_mgr, transpose,
-+                 id = wx.ID_ANY):
-+
-+        wx.Panel.__init__(self, parent, id)
-+
-+        self.parent = parent
-+        self.full_extend = None
-+        self.mode = None
-+
-+        self._createWidgets()
-+        self._doLayout()
-+        self.scatt_id = scatt_id
-+        self.scatt_mgr = scatt_mgr
-+
-+        self.cidpress = None
-+        self.cidrelease = None
-+
-+        self.transpose = transpose
-+
-+        self.inverse = False
-+
-+        self.SetSize((200, 100))
-+        self.Layout()
-+
-+        self.base_scale = 1.2
-+        self.Bind(wx.EVT_CLOSE,lambda event : self.CleanUp())
-+
-+        self.plotClosed = Signal("ScatterPlotWidget.plotClosed")
-+        self.cursorMove = Signal("ScatterPlotWidget.cursorMove")
-+
-+        self.contex_menu = ScatterPlotContextMenu(plot = self)
-+
-+        self.ciddscroll = None
-+
-+        self.canvas.mpl_connect('motion_notify_event', self.Motion)
-+        self.canvas.mpl_connect('button_press_event', self.OnPress)
-+        self.canvas.mpl_connect('button_release_event', self.OnRelease)
-+        self.canvas.mpl_connect('draw_event', self.draw_callback)
-+
-+    def draw_callback(self, event):
-+        self.polygon_drawer.draw_callback(event)
-+        self.axes.draw_artist(self.zoom_rect)
-+
-+    def _createWidgets(self):
-+
-+        # Create the mpl Figure and FigCanvas objects. 
-+        # 5x4 inches, 100 dots-per-inch
-+        #
-+        self.dpi = 100
-+        self.fig = Figure((1.0, 1.0), dpi=self.dpi)
-+        self.fig.autolayout = True
-+
-+        self.canvas = FigCanvas(self, -1, self.fig)
-+        
-+        self.axes = self.fig.add_axes([0.0,0.0,1,1])
-+
-+        pol = Polygon(list(zip([0], [0])), animated=True)
-+        self.axes.add_patch(pol)
-+        self.polygon_drawer = PolygonDrawer(self.axes, pol = pol, empty_pol = True)
-+
-+        self.zoom_wheel_coords = None
-+        self.zoom_rect_coords = None
-+        self.zoom_rect = Polygon(list(zip([0], [0])), facecolor = 'none')
-+        self.zoom_rect.set_visible(False)
-+        self.axes.add_patch(self.zoom_rect)
-+
-+    def ZoomToExtend(self):
-+        if self.full_extend:
-+            self.axes.axis(self.full_extend)
-+            self.canvas.draw()
-+
-+    def SetMode(self, mode):
-+        self._deactivateMode()
-+        if mode == 'zoom':
-+            self.ciddscroll = self.canvas.mpl_connect('scroll_event', self.ZoomWheel)
-+            self.mode = 'zoom'
-+        elif mode == 'zoom_extend':
-+            self.mode = 'zoom_extend'
-+        elif mode == 'pan':
-+            self.mode = 'pan'
-+        elif mode:
-+            self.polygon_drawer.SetMode(mode)
-+
-+    def SetSelectionPolygonMode(self, activate):
-+        self.polygon_drawer.SetSelectionPolygonMode(activate)
-+
-+    def _deactivateMode(self):
-+        self.mode  = None
-+        self.polygon_drawer.SetMode(None)
-+
-+        if self.ciddscroll:
-+            self.canvas.mpl_disconnect(self.ciddscroll)
-+
-+        self.zoom_rect.set_visible(False)
-+        self._stopCategoryEdit()
-+
-+    def GetCoords(self):
-+
-+        coords = self.polygon_drawer.GetCoords()
-+        if coords is None:
-+            return
-+
-+        if self.transpose:
-+            for c in coords:
-+                tmp = c[0]
-+                c[0] = c[1]
-+                c[1] = tmp
-+
-+        return coords
-+
-+    def SetEmpty(self):
-+        return self.polygon_drawer.SetEmpty()
-+
-+    def OnRelease(self, event):
-+        if not self.mode == "zoom": return
-+        self.zoom_rect.set_visible(False)
-+        self.ZoomRectangle(event)
-+        self.canvas.draw()
-+    
-+    def OnPress(self, event):
-+        'on button press we will see if the mouse is over us and store some data'
-+        if not event.inaxes:
-+            return
-+        if self.mode == "zoom_extend":
-+            self.ZoomToExtend()
-+
-+        if event.xdata and event.ydata:
-+            self.zoom_wheel_coords = { 'x' : event.xdata, 'y' : event.ydata}
-+            self.zoom_rect_coords = { 'x' : event.xdata, 'y' : event.ydata}
-+        else:
-+            self.zoom_wheel_coords = None
-+            self.zoom_rect_coords = None
-+
-+    def _stopCategoryEdit(self):
-+        'disconnect all the stored connection ids'
-+
-+        if self.cidpress:
-+            self.canvas.mpl_disconnect(self.cidpress)
-+        if self.cidrelease:
-+            self.canvas.mpl_disconnect(self.cidrelease)
-+        #self.canvas.mpl_disconnect(self.cidmotion)
-+
-+    def _doLayout(self):
-+        
-+        self.main_sizer = wx.BoxSizer(wx.VERTICAL)
-+        self.main_sizer.Add(self.canvas, 1, wx.LEFT | wx.TOP | wx.GROW)
-+        self.SetSizer(self.main_sizer)
-+        self.main_sizer.Fit(self)
-+    
-+    def Plot(self, cats_order, scatts, ellipses, styles):
-+        """ Redraws the figure
-+        """
-+
-+        callafter_list = []
-+
-+        if self.full_extend:
-+            cx = self.axes.get_xlim()
-+            cy = self.axes.get_ylim()
-+            c = cx + cy
-+        else:
-+            c = None
-+
-+        #q = Queue()
-+        #p = Process(target=MergeImg, args=(cats_order, scatts, styles, self.transpose, q))
-+        #p.start()
-+        #merged_img, self.full_extend = q.get()
-+        #p.join()
-+        
-+        merged_img, self.full_extend = MergeImg(cats_order, scatts, styles, None)
-+        self.axes.clear()
-+        self.axes.axis('equal')
-+
-+        if self.transpose:
-+            merged_img = np.transpose(merged_img, (1, 0, 2))
-+
-+        img = imshow(self.axes, merged_img,
-+                     extent= [int(ceil(x)) for x in self.full_extend],
-+                     origin='lower',
-+                     interpolation='nearest',
-+                     aspect="equal")
-+
-+        callafter_list.append([self.axes.draw_artist, [img]])
-+        callafter_list.append([grass.try_remove, [merged_img.filename]])
-+
-+        for cat_id in cats_order:
-+            if cat_id == 0:
-+                continue
-+            if not ellipses.has_key(cat_id):
-+                continue
-+                
-+            e = ellipses[cat_id]
-+            if not e:
-+                continue
-+
-+            colors = styles[cat_id]['color'].split(":")
-+            if self.transpose:
-+                e['theta'] = 360 - e['theta'] + 90
-+                if e['theta'] >= 360:
-+                    e['theta'] = abs(360 - e['theta']) 
-+                
-+                e['pos'] = [e['pos'][1], e['pos'][0]]
-+
-+            ellip = Ellipse(xy=e['pos'], 
-+                            width=e['width'], 
-+                            height=e['height'], 
-+                            angle=e['theta'], 
-+                            edgecolor="w",
-+                            linewidth=1.5, 
-+                            facecolor='None')
-+            self.axes.add_artist(ellip)
-+            callafter_list.append([self.axes.draw_artist, [ellip]])
-+
-+            color = map(lambda v : int(v)/255.0, styles[cat_id]['color'].split(":"))
-+
-+            ellip = Ellipse(xy=e['pos'], 
-+                            width=e['width'], 
-+                            height=e['height'], 
-+                            angle=e['theta'], 
-+                            edgecolor=color,
-+                            linewidth=1, 
-+                            facecolor='None')
-+
-+            self.axes.add_artist(ellip)
-+            callafter_list.append([self.axes.draw_artist, [ellip]])
-+            
-+            center = Line2D([e['pos'][0]], [e['pos'][1]], 
-+                            marker='x',
-+                            markeredgecolor='w',
-+                            #markerfacecolor=color,
-+                            markersize=2)
-+            self.axes.add_artist(center)
-+            callafter_list.append([self.axes.draw_artist, [center]])
-+
-+        callafter_list.append([self.fig.canvas.blit, []])
-+
-+        if c:
-+            self.axes.axis(c)
-+        wx.CallAfter(lambda : self.CallAfter(callafter_list))
-+    
-+    def CallAfter(self, funcs_list):
-+        while funcs_list: 
-+            fcn, args = funcs_list.pop(0) 
-+            fcn(*args) 
-+
-+        self.canvas.draw()
-+
-+    def CleanUp(self):
-+        self.plotClosed.emit(scatt_id = self.scatt_id)
-+        self.Destroy()
-+
-+    def ZoomWheel(self, event):
-+        # get the current x and y limits
-+        if not event.inaxes:
-+            return
-+        # tcaswell
-+        # http://stackoverflow.com/questions/11551049/matplotlib-plot-zooming-with-scroll-wheel
-+        cur_xlim = self.axes.get_xlim()
-+        cur_ylim = self.axes.get_ylim()
-+        
-+        xdata = event.xdata
-+        ydata = event.ydata 
-+        if event.button == 'up':
-+            scale_factor = 1/self.base_scale
-+        elif event.button == 'down':
-+            scale_factor = self.base_scale
-+        else:
-+            scale_factor = 1
-+
-+        extend = (xdata - (xdata - cur_xlim[0]) * scale_factor,
-+                  xdata + (cur_xlim[1] - xdata) * scale_factor, 
-+                  ydata - (ydata - cur_ylim[0]) * scale_factor,
-+                  ydata + (cur_ylim[1] - ydata) * scale_factor)
-+
-+        self.axes.axis(extend)
-+        
-+        self.canvas.draw()
-+
-+    def ZoomRectangle(self, event):
-+        # get the current x and y limits
-+        if not self.mode == "zoom": return
-+        if event.inaxes is None: return
-+        if event.button != 1: return
-+
-+        cur_xlim = self.axes.get_xlim()
-+        cur_ylim = self.axes.get_ylim()
-+        
-+        x1, y1 = event.xdata, event.ydata
-+        x2 = deepcopy(self.zoom_rect_coords['x'])
-+        y2 = deepcopy(self.zoom_rect_coords['y'])
-+
-+        if x1 == x2 or y1 == y2:
-+            return
-+
-+        self.axes.axis((x1, x2, y1, y2))
-+        #self.axes.set_xlim(x1, x2)#, auto = True)
-+        #self.axes.set_ylim(y1, y2)#, auto = True)
-+        self.canvas.draw()
-+
-+    def Motion(self, event):
-+        self.PanMotion(event)
-+        self.ZoomRectMotion(event)
-+        
-+        if event.inaxes is None: 
-+            return
-+        
-+        self.cursorMove.emit(x=event.xdata, y=event.ydata)
-+
-+    def PanMotion(self, event):
-+        'on mouse movement'
-+        if not self.mode == "pan": 
-+            return
-+        if event.inaxes is None: 
-+            return
-+        if event.button != 1: 
-+            return
-+
-+        cur_xlim = self.axes.get_xlim()
-+        cur_ylim = self.axes.get_ylim()
-+
-+        x,y = event.xdata, event.ydata
-+        
-+        mx = (x - self.zoom_wheel_coords['x']) * 0.6
-+        my = (y - self.zoom_wheel_coords['y']) * 0.6
-+
-+        extend = (cur_xlim[0] - mx, cur_xlim[1] - mx, cur_ylim[0] - my, cur_ylim[1] - my)
-+
-+        self.zoom_wheel_coords['x'] = x
-+        self.zoom_wheel_coords['y'] = y
-+
-+        self.axes.axis(extend)
-+
-+        #self.canvas.copy_from_bbox(self.axes.bbox)
-+        #self.canvas.restore_region(self.background)
-+        self.canvas.draw()
-+        
-+    def ZoomRectMotion(self, event):
-+        if not self.mode == "zoom": return
-+        if event.inaxes is None: return
-+        if event.button != 1: return
-+
-+        x1, y1 = event.xdata, event.ydata
-+        self.zoom_rect.set_visible(True)
-+        x2 = self.zoom_rect_coords['x']
-+        y2 = self.zoom_rect_coords['y']
-+
-+        self.zoom_rect.xy = ((x1, y1), (x1, y2), (x2, y2), (x2, y1), (x1, y1))
-+
-+        #self.axes.draw_artist(self.zoom_rect)
-+        self.canvas.draw()
-+
-+class ScatterPlotContextMenu:
-+    def __init__(self, plot):
-+
-+        self.plot = plot
-+        self.canvas = plot.canvas
-+        self.cidpress = self.canvas.mpl_connect(
-+            'button_press_event', self.ContexMenu)
-+   
-+    def ContexMenu(self, event):
-+        if not event.inaxes:
-+            return
-+
-+        if event.button == 3:
-+            menu = wx.Menu()       
-+            menu_items = [["zoom_to_extend", _("Zoom to scatter plot extend"), lambda event : self.plot.ZoomToExtend()]]
-+
-+            for item in menu_items:
-+                item_id = wx.ID_ANY
-+                menu.Append(item_id, text = item[1])
-+                menu.Bind(wx.EVT_MENU, item[2], id = item_id)
-+
-+            wx.CallAfter(self.ShowMenu, menu) 
-+   
-+    def ShowMenu(self, menu):
-+        self.plot.PopupMenu(menu)
-+        menu.Destroy()
-+        self.plot.ReleaseMouse() 
-+
-+class PolygonDrawer:
-+    """
-+    An polygon editor.
-+    """
-+    def __init__(self, ax, pol, empty_pol):
-+        if pol.figure is None:
-+            raise RuntimeError('You must first add the polygon to a figure or canvas before defining the interactor')
-+        self.ax = ax
-+        self.canvas = pol.figure.canvas
-+
-+        self.showverts = True
-+
-+        self.pol = pol
-+        self.empty_pol = empty_pol
-+
-+        x, y = zip(*self.pol.xy)
-+
-+        style = self._getPolygonStyle()
-+
-+        self.line = Line2D(x, y, marker='o', markerfacecolor='r', animated=True)
-+        self.ax.add_line(self.line)
-+        #self._update_line(pol)
-+
-+        cid = self.pol.add_callback(self.poly_changed)
-+        self.moving_ver_idx = None # the active vert
-+
-+        self.mode = None
-+
-+        if self.empty_pol:
-+            self._show(False)
-+
-+        #self.canvas.mpl_connect('draw_event', self.draw_callback)
-+        self.canvas.mpl_connect('button_press_event', self.OnButtonPressed)
-+        self.canvas.mpl_connect('button_release_event', self.button_release_callback)
-+        self.canvas.mpl_connect('motion_notify_event', self.motion_notify_callback)
-+    
-+        self.it = 0
-+
-+    def _getPolygonStyle(self):
-+        style = {}
-+        style['sel_pol'] = UserSettings.Get(group='scatt', 
-+                                            key='selection', 
-+                                            subkey='sel_pol')
-+        style['sel_pol_vertex'] = UserSettings.Get(group='scatt', 
-+                                                   key='selection', 
-+                                                   subkey='sel_pol_vertex')
-+
-+        style['sel_pol'] = [i / 255.0 for i in style['sel_pol']] 
-+        style['sel_pol_vertex'] = [i / 255.0 for i in style['sel_pol_vertex']] 
-+
-+        return style
-+
-+    def _getSnapTresh(self):
-+        return UserSettings.Get(group='scatt', 
-+                                key='selection', 
-+                                subkey='snap_tresh')
-+
-+    def SetMode(self, mode):
-+        self.mode = mode
-+
-+    def SetSelectionPolygonMode(self, activate):
-+        
-+        self.Show(activate)
-+        if not activate and self.mode:
-+            self.SetMode(None) 
-+
-+    def Show(self, show):
-+        if show:
-+            if not self.empty_pol:
-+                self._show(True)
-+        else:
-+            self._show(False)
-+
-+    def GetCoords(self):
-+        if self.empty_pol:
-+            return None
-+
-+        coords = deepcopy(self.pol.xy)
-+        return coords
-+
-+    def SetEmpty(self):
-+        self._setEmptyPol(True)
-+
-+    def _setEmptyPol(self, empty_pol):
-+        self.empty_pol = empty_pol
-+        self._show(not empty_pol)
-+
-+    def _show(self, show):
-+
-+        self.show = show
-+
-+        self.line.set_visible(self.show)
-+        self.pol.set_visible(self.show)
-+
-+        self.Redraw()
-+
-+    def Redraw(self):
-+        if self.show:
-+            self.ax.draw_artist(self.pol)
-+            self.ax.draw_artist(self.line)
-+        self.canvas.blit(self.ax.bbox)
-+        self.canvas.draw()
-+
-+    def draw_callback(self, event):
-+
-+        style=self._getPolygonStyle()
-+        self.pol.set_facecolor(style['sel_pol'])
-+        self.line.set_markerfacecolor(style['sel_pol_vertex'])
-+
-+        self.background = self.canvas.copy_from_bbox(self.ax.bbox)
-+        self.ax.draw_artist(self.pol)
-+        self.ax.draw_artist(self.line)
-+    
-+    def poly_changed(self, pol):
-+        'this method is called whenever the polygon object is called'
-+        # only copy the artist props to the line (except visibility)
-+        vis = self.line.get_visible()
-+        Artist.update_from(self.line, pol)
-+        self.line.set_visible(vis)  # don't use the pol visibility state
-+
-+    def get_ind_under_point(self, event):
-+        'get the index of the vertex under point if within treshold'
-+
-+        # display coords
-+        xy = np.asarray(self.pol.xy)
-+        xyt = self.pol.get_transform().transform(xy)
-+        xt, yt = xyt[:, 0], xyt[:, 1]
-+        d = np.sqrt((xt-event.x)**2 + (yt-event.y)**2)
-+        indseq = np.nonzero(np.equal(d, np.amin(d)))[0]
-+        ind = indseq[0]
-+
-+        if d[ind]>=self._getSnapTresh():
-+            ind = None
-+
-+        return ind
-+
-+    def OnButtonPressed(self, event):
-+        if not event.inaxes:
-+            return
-+
-+        if event.button in [2, 3]: 
-+            return
-+
-+        if self.mode == "delete_vertex":
-+            self._deleteVertex(event)
-+        elif self.mode == "add_boundary_vertex":
-+            self._addVertexOnBoundary(event)
-+        elif self.mode == "add_vertex":
-+            self._addVertex(event)
-+        elif self.mode == "remove_polygon":
-+            self.SetEmpty()
-+        self.moving_ver_idx = self.get_ind_under_point(event)
-+
-+    def button_release_callback(self, event):
-+        'whenever a mouse button is released'
-+        if not self.showverts: return
-+        if event.button != 1: return
-+        self.moving_ver_idx = None
-+
-+    def ShowVertices(self, show):
-+        self.showverts = show
-+        self.line.set_visible(self.showverts)
-+        if not self.showverts: self.moving_ver_idx = None
-+
-+    def _deleteVertex(self, event):
-+        ind = self.get_ind_under_point(event)
-+
-+        if ind  is None or self.empty_pol:
-+            return
-+
-+        if len(self.pol.xy) <= 2:
-+            self.empty_pol = True
-+            self._show(False)
-+            return
-+
-+        coords = []
-+        for i,tup in enumerate(self.pol.xy): 
-+            if i == ind:
-+                continue
-+            elif i == 0 and ind == len(self.pol.xy) - 1:
-+                continue
-+            elif i == len(self.pol.xy) - 1 and ind == 0: 
-+                continue
-+
-+            coords.append(tup)
-+
-+        self.pol.xy = coords
-+        self.line.set_data(zip(*self.pol.xy))
-+
-+        self.Redraw()
-+
-+    def _addVertexOnBoundary(self, event):
-+        if self.empty_pol:
-+            return
-+
-+        xys = self.pol.get_transform().transform(self.pol.xy)
-+        p = event.x, event.y # display coords
-+        for i in range(len(xys)-1):
-+            s0 = xys[i]
-+            s1 = xys[i+1]
-+            d = dist_point_to_segment(p, s0, s1)
-+
-+            if d<=self._getSnapTresh():
-+                self.pol.xy = np.array(
-+                    list(self.pol.xy[:i + 1]) +
-+                    [(event.xdata, event.ydata)] +
-+                    list(self.pol.xy[i + 1:]))
-+                self.line.set_data(zip(*self.pol.xy))
-+                break
-+
-+        self.Redraw()
-+
-+    def _addVertex(self, event):
-+
-+        if self.empty_pol:
-+            pt = (event.xdata, event.ydata)
-+            self.pol.xy = np.array([pt, pt])
-+            self._show(True)
-+            self.empty_pol = False
-+        else:
-+            self.pol.xy = np.array(
-+                        [(event.xdata, event.ydata)] +
-+                        list(self.pol.xy[1:]) +
-+                        [(event.xdata, event.ydata)])
-+
-+        self.line.set_data(zip(*self.pol.xy))
-+        
-+        self.Redraw()
-+
-+    def motion_notify_callback(self, event):
-+        'on mouse movement'
-+        if not self.mode == "move_vertex": return
-+        if not self.showverts: return
-+        if self.empty_pol: return
-+        if self.moving_ver_idx is None: return
-+        if event.inaxes is None: return
-+        if event.button != 1: return
-+
-+        self.it += 1
-+
-+        x,y = event.xdata, event.ydata
-+
-+        self.pol.xy[self.moving_ver_idx] = x,y
-+        if self.moving_ver_idx == 0:
-+            self.pol.xy[len(self.pol.xy) - 1] = x,y
-+        elif self.moving_ver_idx == len(self.pol.xy) - 1:
-+            self.pol.xy[0] = x,y
-+
-+        self.line.set_data(zip(*self.pol.xy))
-+
-+        self.canvas.restore_region(self.background)
-+
-+        self.Redraw()
-+
-+class ModestImage(mi.AxesImage):
-+    """
-+    Computationally modest image class.
-+
-+    ModestImage is an extension of the Matplotlib AxesImage class
-+    better suited for the interactive display of larger images. Before
-+    drawing, ModestImage resamples the data array based on the screen
-+    resolution and view window. This has very little affect on the
-+    appearance of the image, but can substantially cut down on
-+    computation since calculations of unresolved or clipped pixels
-+    are skipped.
-+
-+    The interface of ModestImage is the same as AxesImage. However, it
-+    does not currently support setting the 'extent' property. There
-+    may also be weird coordinate warping operations for images that
-+    I'm not aware of. Don't expect those to work either.
-+
-+    Author: Chris Beaumont <beaumont at hawaii.edu>
-+    """
-+    def __init__(self, minx=0.0, miny=0.0, *args, **kwargs):
-+        if 'extent' in kwargs and kwargs['extent'] is not None:
-+            raise NotImplementedError("ModestImage does not support extents")
-+
-+        self._full_res = None
-+        self._sx, self._sy = None, None
-+        self._bounds = (None, None, None, None)
-+        self.minx = minx
-+        self.miny = miny
-+
-+        super(ModestImage, self).__init__(*args, **kwargs)
-+
-+    def set_data(self, A):
-+        """
-+        Set the image array
-+
-+        ACCEPTS: numpy/PIL Image A
-+        """
-+        self._full_res = A
-+        self._A = A
-+
-+        if self._A.dtype != np.uint8 and not np.can_cast(self._A.dtype,
-+                                                         np.float):
-+            raise TypeError("Image data can not convert to float")
-+
-+        if (self._A.ndim not in (2, 3) or
-+            (self._A.ndim == 3 and self._A.shape[-1] not in (3, 4))):
-+            raise TypeError("Invalid dimensions for image data")
-+
-+        self._imcache =None
-+        self._rgbacache = None
-+        self._oldxslice = None
-+        self._oldyslice = None
-+        self._sx, self._sy = None, None
-+
-+    def get_array(self):
-+        """Override to return the full-resolution array"""
-+        return self._full_res
-+
-+    def _scale_to_res(self):
-+        """ Change self._A and _extent to render an image whose
-+        resolution is matched to the eventual rendering."""
-+
-+        ax = self.axes
-+        ext = ax.transAxes.transform([1, 1]) - ax.transAxes.transform([0, 0])
-+        xlim, ylim = ax.get_xlim(), ax.get_ylim()
-+        dx, dy = xlim[1] - xlim[0], ylim[1] - ylim[0]
-+
-+        y0 = max(self.miny, ylim[0] - 5)
-+        y1 = min(self._full_res.shape[0] + self.miny, ylim[1] + 5)
-+        x0 = max(self.minx, xlim[0] - 5)
-+        x1 = min(self._full_res.shape[1] + self.minx, xlim[1] + 5)
-+        y0, y1, x0, x1 = map(int, [y0, y1, x0, x1])
-+
-+        sy = int(max(1, min((y1 - y0) / 5., np.ceil(dy / ext[1]))))
-+        sx = int(max(1, min((x1 - x0) / 5., np.ceil(dx / ext[0]))))
-+
-+        # have we already calculated what we need?
-+        if sx == self._sx and sy == self._sy and \
-+            x0 == self._bounds[0] and x1 == self._bounds[1] and \
-+            y0 == self._bounds[2] and y1 == self._bounds[3]:
-+            return
-+
-+        self._A = self._full_res[y0 - self.miny:y1 - self.miny:sy, 
-+                                 x0 - self.minx:x1 - self.minx:sx]
-+
-+        x1 = x0 + self._A.shape[1] * sx
-+        y1 = y0 + self._A.shape[0] * sy
-+
-+        self.set_extent([x0 - .5, x1 - .5, y0 - .5, y1 - .5])
-+        self._sx = sx
-+        self._sy = sy
-+        self._bounds = (x0, x1, y0, y1)
-+        self.changed()
-+
-+    def draw(self, renderer, *args, **kwargs):
-+        self._scale_to_res()
-+        super(ModestImage, self).draw(renderer, *args, **kwargs)
-+
-+def imshow(axes, X, cmap=None, norm=None, aspect=None,
-+           interpolation=None, alpha=None, vmin=None, vmax=None,
-+           origin=None, extent=None, shape=None, filternorm=1,
-+           filterrad=4.0, imlim=None, resample=None, url=None, **kwargs):
-+    """Similar to matplotlib's imshow command, but produces a ModestImage
-+
-+    Unlike matplotlib version, must explicitly specify axes
-+    Author: Chris Beaumont <beaumont at hawaii.edu>
-+    """
-+
-+    if not axes._hold:
-+        axes.cla()
-+    if norm is not None:
-+        assert(isinstance(norm, mcolors.Normalize))
-+    if aspect is None:
-+        aspect = rcParams['image.aspect']
-+    axes.set_aspect(aspect)
-+
-+    if extent:
-+        minx=extent[0]
-+        miny=extent[2]
-+    else:
-+        minx=0.0
-+        miny=0.0
-+
-+    im = ModestImage(minx, miny, axes, cmap, norm, interpolation, origin, extent,
-+                     filternorm=filternorm,
-+                     filterrad=filterrad, resample=resample, **kwargs)
-+
-+    im.set_data(X)
-+    im.set_alpha(alpha)
-+    axes._set_artist_props(im)
-+
-+    if im.get_clip_path() is None:
-+        # image does not already have clipping set, clip to axes patch
-+        im.set_clip_path(axes.patch)
-+
-+    #if norm is None and shape is None:
-+    #    im.set_clim(vmin, vmax)
-+    if vmin is not None or vmax is not None:
-+        im.set_clim(vmin, vmax)
-+    else:
-+        im.autoscale_None()
-+    im.set_url(url)
-+
-+    # update ax.dataLim, and, if autoscaling, set viewLim
-+    # to tightly fit the image, regardless of dataLim.
-+    im.set_extent(im.get_extent())
-+
-+    axes.images.append(im)
-+    im._remove_method = lambda h: axes.images.remove(h)
-+
-+    return im
-+
-+def MergeImg(cats_order, scatts, styles, output_queue):
-+
-+        start_time = time.clock()
-+        cmap_time = 0
-+        merge_time = 0
-+        mask_time = 0
-+        norm_time = 0
-+        max_time = 0
-+
-+        init = True
-+        merge_tmp = grass.tempfile()
-+        for cat_id in cats_order:
-+            if not scatts.has_key(cat_id):
-+                continue
-+            scatt = scatts[cat_id]
-+            #print "color map %d" % cat_id
-+            #TODO make more general
-+            if cat_id != 0 and (styles[cat_id]['opacity'] == 0.0 or \
-+               not styles[cat_id]['show']):
-+                continue
-+            if init:
-+
-+                b2_i = scatt['bands_info']['b1']
-+                b1_i = scatt['bands_info']['b2']
-+
-+                full_extend = (b1_i['min'] - 0.5, b1_i['max'] + 0.5, b2_i['min'] - 0.5, b2_i['max'] + 0.5) 
-+            
-+            if cat_id == 0:
-+                cmap = matplotlib.cm.jet
-+                cmap.set_bad('w',1.)
-+                cmap._init()
-+                cmap._lut[len(cmap._lut) - 1, -1] = 0
-+            else:
-+                colors = styles[cat_id]['color'].split(":")
-+
-+                cmap = matplotlib.cm.jet
-+                cmap.set_bad('w',1.)
-+                cmap._init()
-+                cmap._lut[len(cmap._lut) - 1, -1] = 0
-+                cmap._lut[:, 0] = int(colors[0])/255.0
-+                cmap._lut[:, 1] = int(colors[1])/255.0
-+                cmap._lut[:, 2] = int(colors[2])/255.0
-+
-+            #if init:
-+            tmp = time.clock()
-+
-+            masked_cat = np.ma.masked_less_equal(scatt['np_vals'], 0)
-+            mask_time += time.clock() - tmp
-+
-+            tmp = time.clock()
-+            vmax = np.amax(masked_cat)
-+            max_time += time.clock() - tmp
-+
-+            tmp = time.clock()
-+            masked_cat = np.uint8(masked_cat * (255.0 / float(vmax)))
-+            norm_time += time.clock() - tmp
-+
-+            #print masked_cat
-+            #print masked_cat.shape
-+            #print masked_cat.mask.dtype
-+            #
-+            #print "colored_cat.shape"
-+            #print colored_cat.shape
-+            #merged_img = np.memmap(merge_tmp, dtype='uint8',, shape=colored_cat.shape)
-+            tmp = time.clock()
-+            cmap = np.uint8(cmap._lut * 255)
-+            sh =masked_cat.shape
-+
-+            colored_cat = np.zeros(dtype='uint8', shape=(sh[0], sh[1], 4))
-+            ApplyColormap(masked_cat, masked_cat.mask, cmap, colored_cat)
-+
-+            #colored_cat = np.uint8(cmap(masked_cat) * 255)
-+            cmap_time += time.clock() - tmp
-+
-+            del masked_cat
-+            del cmap
-+            
-+            #colored_cat[...,3] = np.choose(masked_cat.mask, (255, 0))
-+
-+            tmp = time.clock()
-+            if init:
-+                merged_img = np.memmap(merge_tmp, dtype='uint8', mode='w+', shape=colored_cat.shape)
-+                merged_img[:] = colored_cat[:]
-+                init = False
-+            else:
-+                MergeArrays(merged_img, colored_cat, styles[cat_id]['opacity'])
-+
-+            """
-+                #c_img_a = np.memmap(grass.tempfile(), dtype="uint16", mode='w+', shape = shape) 
-+                c_img_a = colored_cat.astype('uint16')[:,:,3] * styles[cat_id]['opacity']
-+
-+                #TODO apply strides and there will be no need for loop
-+                #b = as_strided(a, strides=(0, a.strides[3], a.strides[3], a.strides[3]), shape=(3, a.shape[0], a.shape[1]))
-+                
-+                for i in range(3):
-+                    merged_img[:,:,i] = (merged_img[:,:,i] * (255 - c_img_a) + colored_cat[:,:,i] * c_img_a) / 255;
-+                merged_img[:,:,3] = (merged_img[:,:,3] * (255 - c_img_a) + 255 * c_img_a) / 255;
-+                
-+                del c_img_a
-+            """
-+            merge_time += time.clock() - tmp
-+
-+            del colored_cat
-+
-+        end_time =  time.clock() - start_time
-+        #print "all time:%f" % (end_time)
-+        #print "cmap_time:%f" % (cmap_time / end_time * 100.0 )
-+        #print "merge_time:%f" % (merge_time / end_time * 100.0 )
-+        #print "mask_time:%f" % (mask_time / end_time * 100.0 )
-+        #print "nax_time:%f" % (max_time / end_time * 100.0 )
-+        #print "norm_time:%f" % (norm_time / end_time * 100.0 )
-+        
-+        #output_queue.put((merged_img, full_extend))
-+        return merged_img, full_extend 
-\ No newline at end of file
-Index: gui/wxpython/mapdisp/toolbars.py
-===================================================================
---- gui/wxpython/mapdisp/toolbars.py	(revision 57734)
-+++ gui/wxpython/mapdisp/toolbars.py	(working copy)
-@@ -49,6 +49,8 @@
-                             label = _('Create histogram of raster map')),
-     'vnet'       : MetaIcon(img = 'vector-tools',
-                             label = _('Vector network analysis tool')),
-+    'interact_scatter' : MetaIcon(img = 'layer-raster-profile',
-+                            label = _("Interactive scatter plot tool")),
-     }
- 
- NvizIcons = {
-@@ -239,7 +241,9 @@
-                       (MapIcons["scatter"],     self.parent.OnScatterplot),
-                       (MapIcons["histogram"],   self.parent.OnHistogramPyPlot),
-                       (BaseIcons["histogramD"], self.parent.OnHistogram),
--                      (MapIcons["vnet"],        self.parent.OnVNet)))
-+                      (MapIcons["vnet"],        self.parent.OnVNet),
-+                      (MapIcons["interact_scatter"], 
-+                       self.parent.OnIScatt)))
-         
-     def OnDecoration(self, event):
-         """!Decorations overlay menu
-Index: gui/wxpython/mapdisp/frame.py
-===================================================================
---- gui/wxpython/mapdisp/frame.py	(revision 57734)
-+++ gui/wxpython/mapdisp/frame.py	(working copy)
-@@ -225,6 +225,7 @@
-         #
-         self.dialogs = {}
-         self.dialogs['attributes'] = None
-+        self.dialogs['scatt_plot'] = None
-         self.dialogs['category'] = None
-         self.dialogs['barscale'] = None
-         self.dialogs['legend'] = None
-@@ -1168,6 +1169,19 @@
-         """!Returns toolbar with zooming tools"""
-         return self.toolbars['map']
- 
-+    def OnIScatt(self, event):
-+        """!Init interactive scatterplot tools
-+        """
-+        if self.dialogs['scatt_plot']:
-+            self.dialogs['scatt_plot'].Raise()
-+            return
-+
-+        from scatt_plot.frame import IScattDialog
-+        self.dialogs['scatt_plot'] = IScattDialog(parent=self, giface=self._giface)
-+        
-+        self.dialogs['scatt_plot'].CenterOnScreen()
-+        self.dialogs['scatt_plot'].Show()
-+
-     def OnVNet(self, event):
-         """!Dialog for v.net* modules 
-         """
-Index: gui/wxpython/vdigit/wxdigit.py
-===================================================================
---- gui/wxpython/vdigit/wxdigit.py	(revision 57734)
-+++ gui/wxpython/vdigit/wxdigit.py	(working copy)
-@@ -17,7 +17,7 @@
- (and NumPy would be an excellent candidate for acceleration via
- e.g. OpenCL or CUDA; I'm surprised it hasn't happened already).
- 
--(C) 2007-2011 by the GRASS Development Team
-+(C) 2007-2011, 2013 by the GRASS Development Team
- 
- This program is free software under the GNU General Public License
- (>=v2). Read the file COPYING that comes with GRASS for details.
-@@ -27,6 +27,8 @@
- 
- import grass.script.core as grass
- 
-+from grass.pydispatch.signal import Signal
-+
- from core.gcmd        import GError
- from core.debug       import Debug
- from core.settings    import UserSettings
-@@ -176,7 +178,21 @@
-         
-         if self.poMapInfo:
-             self.InitCats()
--        
-+
-+        self.emit_signals = False
-+
-+        # signals which describes features changes during digitization, 
-+        # activate them using EmitSignals method 
-+        #TODO signal for errors?
-+        self.featureAdded = Signal('IVDigit.featureAdded')
-+        self.areasDeleted = Signal('IVDigit.areasDeleted')
-+        self.vertexMoved = Signal('IVDigit.vertexMoved')
-+        self.vertexAdded = Signal('IVDigit.vertexAdded')
-+        self.vertexRemoved = Signal('IVDigit.vertexRemoved')
-+        self.featuresDeleted = Signal('IVDigit.featuresDeleted')
-+        self.featuresMoved = Signal('IVDigit.featuresMoved')
-+        self.lineEdited = Signal('IVDigit.lineEdited')
-+
-     def __del__(self):
-         Debug.msg(1, "IVDigit.__del__()")
-         Vect_destroy_line_struct(self.poPoints)
-@@ -188,7 +204,12 @@
-             Vect_close(self.poBgMapInfo)
-             self.poBgMapInfo = self.popoBgMapInfo = None
-             del self.bgMapInfo
--        
-+     
-+    def EmitSignals(self, emit):
-+        """!Activate/deactivate signals which describes features changes during digitization.
-+        """
-+        self.emit_signals = emit
-+
-     def CloseBackgroundMap(self):
-         """!Close background vector map"""
-         if not self.poBgMapInfo:
-@@ -394,7 +415,6 @@
-         
-         @return tuple (number of added features, feature ids)
-         """
--        
-         layer = self._getNewFeaturesLayer()
-         cat = self._getNewFeaturesCat()
-         
-@@ -419,10 +439,14 @@
-             return (-1, None)
-         
-         self.toolbar.EnableUndo()
--        
--        return self._addFeature(vtype, points, layer, cat,
--                                self._getSnapMode(), self._display.GetThreshold())
--    
-+
-+        ret = self._addFeature(vtype, points, layer, cat,
-+                               self._getSnapMode(), self._display.GetThreshold())
-+        if ret[0] > -1 and self.emit_signals:
-+            self.featureAdded.emit(new_bboxs = [self._createBbox(points)], new_areas_cats = [[{layer : [cat]}, None]])
-+
-+        return ret
-+
-     def DeleteSelectedLines(self):
-         """!Delete selected features
- 
-@@ -434,16 +458,27 @@
-         # collect categories for deleting if requested
-         deleteRec = UserSettings.Get(group = 'vdigit', key = 'delRecord', subkey = 'enabled')
-         catDict = dict()
-+
-+        old_bboxs = []
-+        old_areas_cats = []
-         if deleteRec:
-             for i in self._display.selected['ids']:
-+                
-                 if Vect_read_line(self.poMapInfo, None, self.poCats, i) < 0:
-                     self._error.ReadLine(i)
-                 
--                cats = self.poCats.contents
--                for j in range(cats.n_cats):
--                    if cats.field[j] not in catDict.keys():
--                        catDict[cats.field[j]] = list()
--                    catDict[cats.field[j]].append(cats.cat[j])
-+                if self.emit_signals:
-+                    ret = self._getLineAreaBboxCats(i)
-+                    if ret:
-+                        old_bboxs += ret[0]
-+                        old_areas_cats += ret[1]
-+                
-+                # catDict was not used -> put into comment
-+                #cats = self.poCats.contents
-+                #for j in range(cats.n_cats):
-+                #    if cats.field[j] not in catDict.keys():
-+                #        catDict[cats.field[j]] = list()
-+                #    catDict[cats.field[j]].append(cats.cat[j])
-         
-         poList = self._display.GetSelectedIList()
-         nlines = Vedit_delete_lines(self.poMapInfo, poList)
-@@ -456,7 +491,10 @@
-                 self._deleteRecords(catDict)
-             self._addChangeset()
-             self.toolbar.EnableUndo()
--        
-+
-+            if self.emit_signals:
-+                self.featuresDeleted.emit(old_bboxs = old_bboxs, old_areas_cats = old_areas_cats)
-+
-         return nlines
-             
-     def _deleteRecords(self, cats):
-@@ -512,22 +550,173 @@
- 
-         @return number of deleted 
-         """
-+        if len(self._display.selected['ids']) < 1:
-+            return 0
-+        
-         poList = self._display.GetSelectedIList()
-         cList  = poList.contents
-         
-         nareas = 0
-+        old_bboxs = []
-+        old_areas_cats = []
-+
-         for i in range(cList.n_values):
-+
-             if Vect_get_line_type(self.poMapInfo, cList.value[i]) != GV_CENTROID:
-                 continue
--            
-+
-+            if self.emit_signals:
-+                area = Vect_get_centroid_area(self.poMapInfo, cList.value[i]);
-+                if area > 0: 
-+                    bbox, cats = self._getaAreaBboxCats(area)
-+                    old_bboxs += bbox
-+                    old_areas_cats += cats
-+
-             nareas += Vedit_delete_area_centroid(self.poMapInfo, cList.value[i])
-         
-         if nareas > 0:
-             self._addChangeset()
-             self.toolbar.EnableUndo()
-+            if self.emit_signals:
-+                self.areasDeleted.emit(old_bboxs = old_bboxs, old_areas_cats = old_areas_cats)        
-+
-+        return nareas
-+   
-+    def _getLineAreaBboxCats(self, ln_id):
-+        ltype = Vect_read_line(self.poMapInfo, None, None, ln_id)
-+
-+        if ltype == GV_CENTROID:
-+            #TODO centroid opttimization, can be adited also its area -> it will appear two times in new_ lists
-+            return self._getCentroidAreaBboxCats(ln_id)
-+        else: 
-+            return [self._getBbox(ln_id)], [self._getLineAreasCategories(ln_id)]
-+
-+
-+    def _getCentroidAreaBboxCats(self, centroid):
-+        if not Vect_line_alive(self.poMapInfo, centroid):
-+            return None
-+
-+        area = Vect_get_centroid_area(self.poMapInfo, centroid)  
-+        if area > 0:
-+            return self._getaAreaBboxCats(area)
-+        else:
-+            return None
-+
-+    def _getaAreaBboxCats(self, area):
-+
-+        po_b_list = Vect_new_list()
-+        Vect_get_area_boundaries(self.poMapInfo, area, po_b_list);
-+        b_list = po_b_list.contents
-+
-+        geoms = []
-+        areas_cats = []
-+
-+        if b_list.n_values > 0:
-+            for i_line in range(b_list.n_values):
-+
-+                line = b_list.value[i_line];
-+
-+                geoms.append(self._getBbox(abs(line)))
-+                areas_cats.append(self._getLineAreasCategories(abs(line)))
-         
--        return nareas
-+        Vect_destroy_list(po_b_list);
-+
-+        return geoms, areas_cats
-+
-+    def _getLineAreasCategories(self, ln_id):
-+        if not Vect_line_alive (self.poMapInfo, ln_id):
-+            return []
-+
-+        ltype = Vect_read_line(self.poMapInfo, None, None, ln_id)
-+        if ltype != GV_BOUNDARY:
-+            return []
-+
-+        cats = [None, None]
-+
-+        left = c_int()
-+        right = c_int()
-+
-+        if Vect_get_line_areas(self.poMapInfo, ln_id, pointer(left), pointer(right)) == 1:
-+            areas = [left.value, right.value]
-+
-+            for i, a in enumerate(areas):
-+                if a > 0: 
-+                    centroid = Vect_get_area_centroid(self.poMapInfo, a)
-+                    if centroid <= 0:
-+                        continue
-+                    c = self._getCategories(centroid)
-+                    if c:
-+                        cats[i] = c
-+
-+        return cats
-+
-+    def _getCategories(self, ln_id):
-+        if not Vect_line_alive (self.poMapInfo, ln_id):
-+            return none
-+
-+        poCats = Vect_new_cats_struct()
-+        if Vect_read_line(self.poMapInfo, None, poCats, ln_id) < 0:
-+            Vect_destroy_cats_struct(poCats)
-+            return None
-+
-+        cCats = poCats.contents
-+
-+        cats = {}
-+        for j in range(cCats.n_cats):
-+            if cats.has_key(cCats.field[j]):
-+                cats[cCats.field[j]].append(cCats.cat[j])
-+            else:
-+                cats[cCats.field[j]] = [cCats.cat[j]]
-     
-+        Vect_destroy_cats_struct(poCats)
-+        return cats
-+
-+    def _getBbox(self, ln_id):
-+        if not Vect_line_alive (self.poMapInfo, ln_id):
-+            return None
-+
-+        poPoints = Vect_new_line_struct()
-+        if Vect_read_line(self.poMapInfo, poPoints, None, ln_id) < 0:
-+            Vect_destroy_line_struct(poPoints)
-+            return []
-+
-+        geom = self._convertGeom(poPoints)
-+        bbox = self._createBbox(geom)
-+        Vect_destroy_line_struct(poPoints)
-+        return bbox
-+
-+    def _createBbox(self, points):
-+
-+        bbox = {}
-+        for pt in points:
-+            if not bbox.has_key('maxy'):
-+                bbox['maxy'] = pt[1]
-+                bbox['miny'] = pt[1]
-+                bbox['maxx'] = pt[0]
-+                bbox['minx'] = pt[0]
-+                continue
-+                
-+            if   bbox['maxy'] < pt[1]:
-+                bbox['maxy'] = pt[1]
-+            elif bbox['miny'] > pt[1]:
-+                bbox['miny'] = pt[1]
-+                
-+            if   bbox['maxx'] < pt[0]:
-+                bbox['maxx'] = pt[0]
-+            elif bbox['minx'] > pt[0]:
-+                bbox['minx'] = pt[0]
-+        return bbox
-+
-+    def _convertGeom(self, poPoints):
-+
-+        Points = poPoints.contents
-+
-+        pts_geom = []
-+        for j in range(Points.n_points):
-+            pts_geom.append((Points.x[j], Points.y[j]))
-+
-+        return pts_geom
-+
-     def MoveSelectedLines(self, move):
-         """!Move selected features
- 
-@@ -536,16 +725,45 @@
-         if not self._checkMap():
-             return -1
-         
-+        nsel = len(self._display.selected['ids'])
-+        if nsel < 1:
-+            return -1   
-+        
-         thresh = self._display.GetThreshold()
-         snap   = self._getSnapMode()
-         
-         poList = self._display.GetSelectedIList()
-+
-+        if self.emit_signals:
-+            old_bboxs = []
-+            old_areas_cats = []
-+            for sel_id in self._display.selected['ids']:
-+                ret = self._getLineAreaBboxCats(sel_id)
-+                if ret:
-+                    old_bboxs += ret[0]
-+                    old_areas_cats += ret[1]
-+        
-+            Vect_set_updated(self.poMapInfo, 1)
-+            n_up_lines_old = Vect_get_num_updated_lines(self.poMapInfo)
-+        
-         nlines = Vedit_move_lines(self.poMapInfo, self.popoBgMapInfo, int(self.poBgMapInfo is not None),
-                                   poList,
-                                   move[0], move[1], 0,
-                                   snap, thresh)
-+
-         Vect_destroy_list(poList)
--        
-+
-+        if nlines > 0 and self.emit_signals:
-+            new_bboxs = []
-+            new_areas_cats = []
-+            n_up_lines = Vect_get_num_updated_lines(self.poMapInfo)
-+            for i in range(n_up_lines_old, n_up_lines):
-+                new_id = Vect_get_updated_line(self.poMapInfo, i)
-+                ret = self._getLineAreaBboxCats(new_id)
-+                if ret:
-+                    new_bboxs += ret[0]
-+                    new_areas_cats += ret[1]
-+
-         if nlines > 0 and self._settings['breakLines']:
-             for i in range(1, nlines):
-                 self._breakLineAtIntersection(nlines + i, None, changeset)
-@@ -553,7 +771,13 @@
-         if nlines > 0:
-             self._addChangeset()
-             self.toolbar.EnableUndo()
--        
-+            
-+            if self.emit_signals:
-+                self.featuresMoved.emit(new_bboxs = new_bboxs,
-+                                        old_bboxs = old_bboxs, 
-+                                        old_areas_cats = old_areas_cats, 
-+                                        new_areas_cats = new_areas_cats)
-+
-         return nlines
- 
-     def MoveSelectedVertex(self, point, move):
-@@ -571,12 +795,21 @@
-         
-         if len(self._display.selected['ids']) != 1:
-             return -1
--        
-+
-+        # move only first found vertex in bbox 
-+        poList = self._display.GetSelectedIList()
-+
-+        if self.emit_signals:
-+            cList = poList.contents
-+            old_bboxs = [self._getBbox(cList.value[0])]
-+            old_areas_cats = [self._getLineAreasCategories(cList.value[0])]
-+
-+            Vect_set_updated(self.poMapInfo, 1)
-+            n_up_lines_old = Vect_get_num_updated_lines(self.poMapInfo)
-+
-         Vect_reset_line(self.poPoints)
-         Vect_append_point(self.poPoints, point[0], point[1], 0.0)
--        
--        # move only first found vertex in bbox 
--        poList = self._display.GetSelectedIList()
-+
-         moved = Vedit_move_vertex(self.poMapInfo, self.popoBgMapInfo, int(self.poBgMapInfo is not None),
-                                   poList, self.poPoints,
-                                   self._display.GetThreshold(type = 'selectThresh'),
-@@ -584,7 +817,17 @@
-                                   move[0], move[1], 0.0,
-                                   1, self._getSnapMode())
-         Vect_destroy_list(poList)
--        
-+
-+        if moved > 0 and self.emit_signals:
-+            n_up_lines = Vect_get_num_updated_lines(self.poMapInfo)
-+
-+            new_bboxs = []
-+            new_areas_cats = []
-+            for i in range(n_up_lines_old, n_up_lines):
-+                new_id = Vect_get_updated_line(self.poMapInfo, i)
-+                new_bboxs.append(self._getBbox(new_id))
-+                new_areas_cats.append(self._getLineAreasCategories(new_id))
-+
-         if moved > 0 and self._settings['breakLines']:
-             self._breakLineAtIntersection(Vect_get_num_lines(self.poMapInfo),
-                                           None)
-@@ -592,7 +835,13 @@
-         if moved > 0:
-             self._addChangeset()
-             self.toolbar.EnableUndo()
--        
-+
-+            if self.emit_signals:
-+                self.vertexMoved.emit(new_bboxs = new_bboxs,  
-+                                      new_areas_cats = new_areas_cats, 
-+                                      old_areas_cats = old_areas_cats, 
-+                                      old_bboxs = old_bboxs)
-+
-         return moved
- 
-     def AddVertex(self, coords):
-@@ -681,6 +930,10 @@
-             self._error.ReadLine(line)
-             return -1
-         
-+        if self.emit_signals:
-+            old_bboxs = [self._getBbox(line)]
-+            old_areas_cats = [self._getLineAreasCategories(line)]
-+
-         # build feature geometry
-         Vect_reset_line(self.poPoints)
-         for p in coords:
-@@ -696,6 +949,9 @@
-         
-         newline = Vect_rewrite_line(self.poMapInfo, line, ltype,
-                                     self.poPoints, self.poCats)
-+        if newline > 0 and self.emit_signals:
-+            new_geom = [self._getBbox(newline)]
-+            new_areas_cats = [self._getLineAreasCategories(newline)]
-         
-         if newline > 0 and self._settings['breakLines']:
-             self._breakLineAtIntersection(newline, None)
-@@ -703,7 +959,13 @@
-         if newline > 0:
-             self._addChangeset()
-             self.toolbar.EnableUndo()
--        
-+    
-+            if self.emit_signals:
-+                self.lineEdited.emit(old_bboxs = old_bboxs, 
-+                                     old_areas_cats = old_areas_cats, 
-+                                     new_bboxs = new_bboxs, 
-+                                     new_areas_cats = new_areas_cats)
-+
-         return newline
- 
-     def FlipLine(self):
-@@ -1514,6 +1776,16 @@
-             return 0
-         
-         poList  = self._display.GetSelectedIList()
-+
-+        if self.emit_signals:
-+            cList = poList.contents
-+            
-+            old_bboxs = [self._getBbox(cList.value[0])]
-+            old_areas_cats = [self._getLineAreasCategories(cList.value[0])]
-+
-+            Vect_set_updated(self.poMapInfo, 1)
-+            n_up_lines_old = Vect_get_num_updated_lines(self.poMapInfo)
-+
-         Vect_reset_line(self.poPoints)
-         Vect_append_point(self.poPoints, coords[0], coords[1], 0.0)
-         
-@@ -1525,15 +1797,35 @@
-         else:
-             ret = Vedit_remove_vertex(self.poMapInfo, poList,
-                                       self.poPoints, thresh)
-+
-         Vect_destroy_list(poList)
-+
-+        if ret > 0 and self.emit_signals:
-+            new_bboxs = []
-+            new_areas_cats = []
-+
-+            n_up_lines = Vect_get_num_updated_lines(self.poMapInfo)
-+            for i in range(n_up_lines_old, n_up_lines):
-+                new_id = Vect_get_updated_line(self.poMapInfo, i)
-+                new_areas_cats.append(self._getLineAreasCategories(new_id))
-+                new_bboxs.append(self._getBbox(new_id))
-         
-         if not add and ret > 0 and self._settings['breakLines']:
-             self._breakLineAtIntersection(Vect_get_num_lines(self.poMapInfo),
-                                           None)
--        
-+
-         if ret > 0:
-             self._addChangeset()
--                
-+
-+        if ret > 0 and self.emit_signals:
-+            if add:
-+                self.vertexAdded.emit(old_bboxs = old_bboxs, new_bboxs = new_bboxs)
-+            else:
-+                self.vertexRemoved.emit(old_bboxs = old_bboxs, 
-+                                        new_bboxs = new_bboxs,
-+                                        old_areas_cats = old_areas_cats,
-+                                        new_areas_cats = new_areas_cats)
-+
-         return 1
-     
-     def GetLineCats(self, line):
-Index: gui/wxpython/vdigit/toolbars.py
-===================================================================
---- gui/wxpython/vdigit/toolbars.py	(revision 57734)
-+++ gui/wxpython/vdigit/toolbars.py	(working copy)
-@@ -17,6 +17,7 @@
- import wx
- 
- from grass.script import core as grass
-+from grass.pydispatch.signal import Signal
- 
- from gui_core.toolbars  import BaseToolbar, BaseIcons
- from gui_core.dialogs   import CreateNewVector
-@@ -42,6 +43,8 @@
-         self.digit         = None
-         self._giface       = giface
-         
-+        self.editingStarted = Signal("VDigitToolbar.editingStarted")
-+
-         # currently selected map layer for editing (reference to MapLayer instance)
-         self.mapLayer = None
-         # list of vector layers from Layer Manager (only in the current mapset)
-@@ -860,6 +863,7 @@
-             alpha = int(opacity * 255)
-             self.digit.GetDisplay().UpdateSettings(alpha = alpha)
-         
-+        self.editingStarted.emit(vectMap = mapLayer.GetName(), digit = self.digit)
-         return True
- 
-     def StopEditing(self):
-Index: gui/icons/grass/polygon.png
-===================================================================
-Cannot display: file marked as a binary type.
-svn:mime-type = application/octet-stream
-Index: gui/icons/grass/polygon.png
-===================================================================
---- gui/icons/grass/polygon.png	(revision 57734)
-+++ gui/icons/grass/polygon.png	(working copy)
-
-Property changes on: gui/icons/grass/polygon.png
-___________________________________________________________________
-Added: svn:mime-type
-## -0,0 +1 ##
-+application/octet-stream
-\ No newline at end of property
-Index: lib/imagery/scatt_sccats.c
-===================================================================
---- lib/imagery/scatt_sccats.c	(revision 0)
-+++ lib/imagery/scatt_sccats.c	(working copy)
-@@ -0,0 +1,405 @@
-+/*!
-+   \file lib/imagery/scatt_cat_rast.c
-+
-+   \brief Imagery library - functions for manipulation with scatter plot structs.
-+
-+   Copyright (C) 2013 by the GRASS Development Team
-+
-+   This program is free software under the GNU General Public License
-+   (>=v2).  Read the file COPYING that comes with GRASS for details.
-+
-+   \author Stepan Turek <stepan.turek at seznam.cz> (Mentor: Martin Landa)
-+ */
-+
-+#include <grass/raster.h>
-+#include <grass/imagery.h>
-+#include <grass/gis.h>
-+
-+#include <stdio.h>
-+#include <stdlib.h>
-+#include <math.h>
-+#include <string.h>
-+
-+/*!
-+   \brief Compute band ids from scatter plot id.
-+
-+    Scatter plot id describes which bands defines the scatter plot.
-+
-+    Let say we have 3 bands, their ids are 0, 1 and 2.
-+    Scatter plot with id 0 consists of band 1 (b_1_id) 0 and  band 2 (b_2_id) 1.
-+    All scatter plots:
-+    scatt_id b_1_id b_2_id
-+    0        0      1
-+    1        0      2
-+    2        1      2
-+
-+   \param scatt_id scatter plot id
-+   \param n_bands number of bands
-+   \param [out] b_1_id id of band1
-+   \param[out] b_2_id id of band2
-+
-+   \return 0
-+ */
-+int I_id_scatt_to_bands(const int scatt_id, const int n_bands, int * b_1_id, int * b_2_id)
-+{   
-+    int n_b1 = n_bands - 1;
-+
-+    * b_1_id = (int) ((2 * n_b1 + 1 - sqrt((double)((2 * n_b1 + 1) * (2 * n_b1 + 1) - 8 * scatt_id))) / 2);
-+
-+    * b_2_id = scatt_id - ((* b_1_id) * (2 * n_b1 + 1) - (* b_1_id) * (* b_1_id)) / 2 + (* b_1_id) + 1;
-+
-+    return 0;
-+}
-+
-+
-+/*!
-+   \brief Compute scatter plot id from band ids.
-+
-+    See also I_id_scatt_to_bands().
-+
-+   \param n_bands number of bands
-+   \param b_1_id id of band1
-+   \param b_1_id id of band2
-+   \param [out] scatt_id scatter plot id
-+
-+   \return 0
-+ */
-+int I_bands_to_id_scatt(const int b_1_id, const int b_2_id, const int n_bands, int * scatt_id)
-+{   
-+    int n_b1 = n_bands - 1;
-+
-+    * scatt_id = (b_1_id * (2 * n_b1 + 1) - b_1_id * b_1_id) / 2 + b_2_id - b_1_id - 1;
-+
-+    return 0;
-+}
-+
-+/*!
-+   \brief Initialize structure for storing scatter plots data.
-+
-+   \param cats pointer to scCats struct 
-+   \param n_bands number of bands
-+   \param type SC_SCATT_DATA - stores scatter plots 
-+   \param type SC_SCATT_CONDITIONS - stores selected areas in scatter plots
-+ */
-+void I_sc_init_cats(struct scCats * cats, int n_bands, int type)
-+{
-+    int i_cat;
-+
-+    cats->type = type;
-+
-+    cats->n_cats = 100;
-+    cats->n_a_cats = 0;
-+
-+    cats->n_bands = n_bands;
-+    cats->n_scatts = (n_bands - 1) * n_bands / 2;
-+
-+    cats->cats_arr = (struct scScatts **) G_malloc(cats->n_cats * sizeof(struct scScatts *));
-+    memset(cats->cats_arr, 0, cats-> n_cats * sizeof(struct scScatts *));
-+
-+    cats->cats_ids = (int *)  G_malloc(cats->n_cats * sizeof(int));
-+    cats->cats_idxs =(int *)  G_malloc(cats->n_cats * sizeof(int));
-+
-+    for(i_cat = 0; i_cat < cats->n_cats; i_cat++)
-+        cats->cats_idxs[i_cat] = -1;
-+
-+    return;
-+}
-+
-+/*!
-+   \brief Free data of struct scCats, the structure itself remains alocated.
-+
-+   \param cats pointer to existing scCats struct
-+ */
-+void I_sc_free_cats(struct scCats * cats)
-+{
-+    int i_cat;
-+
-+    for(i_cat = 0; i_cat < cats->n_a_cats; i_cat++)
-+    {        
-+        if(cats->cats_arr[i_cat])
-+        {   
-+            G_free(cats->cats_arr[i_cat]->scatt_idxs);
-+            G_free(cats->cats_arr[i_cat]->scatts_bands);
-+            G_free(cats->cats_arr[i_cat]->scatts_arr);
-+            G_free(cats->cats_arr[i_cat]);
-+        }
-+    }
-+
-+    G_free(cats->cats_ids);
-+    G_free(cats->cats_idxs);
-+    G_free(cats->cats_arr);
-+
-+    cats->n_cats = 0;
-+    cats->n_a_cats = 0;
-+    cats->n_bands = 0;
-+    cats->n_scatts = 0;
-+    cats->type = -1;
-+
-+    return;
-+}
-+
-+#if 0
-+void I_sc_get_active_categories(int * a_cats_ids, int * n_a_cats, struct scCats * cats)
-+{
-+    a_cats_ids = cats->cats_ids;
-+    * n_a_cats = cats->n_a_cats;
-+}
-+#endif
-+
-+/*!
-+   \brief Add category.
-+    
-+    Category represents group of scatter plots.
-+
-+   \param cats pointer to scCats struct
-+
-+   \return assigned category id (starts with 0)
-+   \return -1 if maximum nuber of categories was reached
-+ */
-+int I_sc_add_cat(struct scCats * cats)
-+{
-+    int i_scatt, i_cat_id, cat_id;
-+    int n_a_cats = cats->n_a_cats;
-+
-+    if(cats->n_a_cats >= cats->n_cats)
-+        return -1;
-+
-+    for(i_cat_id = 0; i_cat_id < cats->n_cats; i_cat_id++)
-+        if(cats->cats_idxs[i_cat_id] < 0) {
-+            cat_id = i_cat_id;
-+            break;
-+        }
-+
-+    cats->cats_ids[n_a_cats] = cat_id;
-+    cats->cats_idxs[cat_id] = n_a_cats;
-+    
-+    cats->cats_arr[n_a_cats] = (struct scScatts *) G_malloc(sizeof(struct scScatts));
-+
-+    cats->cats_arr[n_a_cats]->scatts_arr = (struct scdScattData **) G_malloc(cats->n_scatts * sizeof(struct scdScattData *));
-+    memset((cats->cats_arr[n_a_cats]->scatts_arr), 0, cats->n_scatts * sizeof(struct scdScattData *));
-+    
-+    cats->cats_arr[n_a_cats]->n_a_scatts = 0;
-+
-+    cats->cats_arr[n_a_cats]->scatts_bands = (int *) G_malloc(cats->n_scatts * 2 * sizeof(int));
-+     
-+    cats->cats_arr[n_a_cats]->scatt_idxs = (int *) G_malloc(cats->n_scatts * sizeof(int));
-+    for(i_scatt = 0; i_scatt < cats->n_scatts; i_scatt++)
-+        cats->cats_arr[n_a_cats]->scatt_idxs[i_scatt] = -1;
-+    
-+    ++cats->n_a_cats;
-+
-+    return cat_id;
-+}
-+
-+#if 0
-+int I_sc_delete_cat(struct scCats * cats, int cat_id)
-+{
-+    int cat_idx, i_cat;
-+
-+    if(cat_id < 0 || cat_id >= cats->n_cats)
-+        return -1;
-+
-+    cat_idx = cats->cats_idxs[cat_id];
-+    if(cat_idx < 0)
-+        return -1;
-+
-+    G_free(cats->cats_arr[cat_idx]->scatt_idxs);
-+    G_free(cats->cats_arr[cat_idx]->scatts_bands);
-+    G_free(cats->cats_arr[cat_idx]->scatts_arr);
-+    G_free(cats->cats_arr[cat_idx]);
-+
-+    for(i_cat = cat_idx; i_cat < cats->n_a_cats - 1; i_cat++)
-+    {
-+        cats->cats_arr[i_cat] = cats->cats_arr[i_cat + 1];
-+        cats->cats_ids[i_cat] = cats->cats_ids[i_cat + 1];
-+    }
-+    cats->cats_idxs[cat_id] = -1; 
-+
-+    --cats->n_a_cats;
-+    
-+    return 0;
-+}
-+#endif
-+
-+/*!
-+   \brief Insert scatter plot data .
-+    Inserted scatt_data struct must have same type as cats struct (SC_SCATT_DATA or SC_SCATT_CONDITIONS).
-+
-+   \param cats pointer to scCats struct
-+   \param cat_id id number of category.
-+   \param scatt_id id number of scatter plot.
-+
-+   \return  0 on success
-+   \return -1 on failure
-+ */
-+int I_sc_insert_scatt_data(struct scCats * cats, struct scdScattData * scatt_data, int cat_id, int scatt_id)
-+{
-+    int band_1, band_2, cat_idx, n_a_scatts;
-+    struct scScatts * scatts;
-+
-+    if(cat_id < 0 || cat_id >= cats->n_cats)
-+        return -1;
-+
-+    cat_idx = cats->cats_idxs[cat_id];
-+    if(cat_idx < 0)
-+        return -1;
-+
-+    if(scatt_id < 0 && scatt_id >= cats->n_scatts)
-+        return -1;
-+
-+    scatts = cats->cats_arr[cat_idx];
-+    if(scatts->scatt_idxs[scatt_id] >= 0)
-+        return -1;
-+
-+    if(!scatt_data->b_conds_arr && cats->type == SC_SCATT_CONDITIONS)
-+        return -1;
-+
-+    if(!scatt_data->scatt_vals_arr && cats->type == SC_SCATT_DATA)
-+        return -1;
-+
-+    n_a_scatts = scatts->n_a_scatts;
-+
-+    scatts->scatt_idxs[scatt_id] = n_a_scatts;
-+
-+    I_id_scatt_to_bands(scatt_id, cats->n_bands, &band_1, &band_2);
-+
-+    scatts->scatts_bands[n_a_scatts * 2] = band_1;
-+    scatts->scatts_bands[n_a_scatts * 2 + 1] = band_2;
-+
-+    scatts->scatts_arr[n_a_scatts] = scatt_data;
-+    ++scatts->n_a_scatts;
-+
-+    return 0;
-+}
-+
-+#if 0
-+int I_sc_remove_scatt_data(struct scCats * cats, struct scdScattData * scatt_data, int cat_id, int scatt_id)
-+{
-+    int cat_idx, scatt_idx, n_init_scatts, i_scatt;
-+    struct scScatts * scatts;
-+
-+    if(cat_id < 0 && cat_id >= cats->n_cats)
-+        return -1;
-+
-+    cat_idx = cats->cats_idxs[cat_id];
-+    if(cat_idx < 0)
-+        return -1;
-+
-+    if(scatt_id < 0 || scatt_id >= cats->n_scatts)
-+        return -1;
-+
-+    scatts = cats->cats_arr[cat_idx];
-+    if(scatts->scatt_idxs[scatt_id] < 0)
-+        return -1;
-+
-+    scatt_data = scatts->scatts_arr[scatt_idx];
-+
-+    for(i_scatt = scatt_idx; i_scatt < scatts->n_a_scatts - 1; i_scatt++)
-+    {
-+        scatts->scatts_arr[i_scatt] = scatts->scatts_arr[i_scatt + 1];
-+        scatts->scatts_bands[i_scatt * 2] = scatts->scatts_bands[(i_scatt + 1)* 2];
-+        scatts->scatts_bands[i_scatt * 2 + 1] = scatts->scatts_bands[(i_scatt + 1) * 2 + 1];
-+    }
-+    scatts->scatts_arr[scatts->n_a_scatts] = NULL;
-+
-+    scatts->scatt_idxs[scatt_id] = -1;
-+
-+    scatt_data = scatts->scatts_arr[scatt_id];
-+    scatts->n_a_scatts--;
-+
-+    return 0;
-+}
-+
-+int I_sc_set_value(struct scCats * cats, int cat_id, int scatt_id, int value_idx, int value)
-+{
-+    int n_a_scatts = cats->cats_arr[cat_id]->n_a_scatts;
-+    int cat_idx, scatt_idx, ret;
-+
-+    cat_idx = cats->cats_idxs[cat_id];
-+    if(cat_idx < 0)
-+        return -1;
-+    
-+    if(cats->cats_arr[cat_idx]->scatt_idxs[scatt_id] < 0)
-+        return -1;
-+
-+    cat_idx = cats->cats_idxs[cat_id];
-+    scatt_idx = cats->cats_arr[cat_idx]->scatt_idxs[scatt_id];
-+
-+    I_scd_set_value(cats->cats_arr[cat_idx]->scatts_arr[scatt_idx], value_idx, value);
-+
-+    return 0;
-+}
-+#endif
-+
-+/*!
-+   \brief Insert scatter plot data.
-+    
-+   \param scatt_data pointer to existing struct scdScattData
-+   \param type SC_SCATT_DATA for scatter plots or SC_SCATT_CONDITIONS for selected areas in scatter plot
-+   \param n_vals number of data values
-+   \param data array of values (unsigned char for SC_SCATT_CONDITIONS, unsigned int for SC_SCATT_DATA)
-+ */
-+void I_scd_init_scatt_data(struct scdScattData * scatt_data, int type, int n_vals, void * data)
-+{
-+    scatt_data->n_vals = n_vals;
-+
-+    if(type == SC_SCATT_DATA)
-+    {   
-+        if(data)
-+            scatt_data->scatt_vals_arr = (unsigned int *) data;
-+        else {
-+            scatt_data->scatt_vals_arr = (unsigned int *) G_malloc(n_vals * sizeof(unsigned int));
-+            memset(scatt_data->scatt_vals_arr, 0, n_vals * sizeof(unsigned int)); 
-+        }
-+        scatt_data->b_conds_arr = NULL;
-+    }
-+    else if(type == SC_SCATT_CONDITIONS)
-+    {
-+        if(data)
-+            scatt_data->b_conds_arr = (unsigned char *) data;
-+        else {
-+            scatt_data->b_conds_arr = (unsigned char *) G_malloc(n_vals * sizeof(unsigned char));
-+            memset(scatt_data->b_conds_arr, 0, n_vals * sizeof(unsigned char));
-+        }
-+        scatt_data->scatt_vals_arr = NULL;
-+    }
-+
-+    return;
-+}
-+
-+
-+#if 0
-+void I_scd_get_range_min_max(struct scdScattData * scatt_data, CELL * band_1_min, CELL * band_1_max, CELL * band_2_min, CELL * band_2_max)
-+{
-+
-+    Rast_get_range_min_max(&(scatt_data->band_1_range), band_1_min, band_2_min);
-+    Rast_get_range_min_max(&(scatt_data->band_2_range), band_2_min, band_2_max);
-+
-+    return;
-+}
-+s
-+void * I_scd_get_data_ptr(struct scdScattData * scatt_data)
-+{
-+    if(!scatt_data->b_conds_arr)
-+        return scatt_data->b_conds_arr;
-+    else if(!scatt_data->scatt_vals_arr)
-+        return scatt_data->scatt_vals_arr;
-+
-+    return NULL;
-+}
-+
-+int I_scd_set_value(struct scdScattData * scatt_data, unsigned int val_idx, unsigned int val)
-+{
-+    if(val_idx < 0 && val_idx >  scatt_data->n_vals)
-+        return -1;
-+
-+    if(scatt_data->b_conds_arr)
-+        scatt_data->b_conds_arr[val_idx] = val;
-+    else if(scatt_data->scatt_vals_arr)
-+        scatt_data->scatt_vals_arr[val_idx] = val;
-+    else
-+        return -1;
-+
-+    return 0;
-+}
-+#endif
-Index: lib/imagery/scatt.c
-===================================================================
---- lib/imagery/scatt.c	(revision 0)
-+++ lib/imagery/scatt.c	(working copy)
-@@ -0,0 +1,871 @@
-+/*!
-+   \file lib/imagery/scatt.c
-+
-+   \brief Imagery library - functions for wx Scatter Plot Tool.
-+
-+   Low level functions used by wx Scatter Plot Tool.
-+
-+   Copyright (C) 2013 by the GRASS Development Team
-+
-+   This program is free software under the GNU General Public License
-+   (>=v2).  Read the file COPYING that comes with GRASS for details.
-+
-+   \author Stepan Turek <stepan.turek at seznam.cz> (Mentor: Martin Landa)
-+ */
-+#include <stdio.h>
-+#include <stdlib.h>
-+#include <math.h>
-+#include <string.h>
-+
-+#include <grass/gis.h>
-+#include <grass/vector.h>
-+#include <grass/raster.h>
-+#include <grass/imagery.h>
-+#include <grass/glocale.h>
-+
-+#include "iclass_local_proto.h"
-+
-+struct rast_row
-+{
-+    CELL * row;
-+    char * null_row;
-+    struct Range rast_range; /*Range of whole raster.*/
-+};
-+
-+/*!
-+   \brief Create pgm header.
-+
-+   Scatter plot internally generates pgm files. These pgms have header in format created by this function.
-+    
-+   \param region region to be pgm header generated for 
-+   \param [out] header header of pgm file
-+ */
-+static int get_cat_rast_header(struct Cell_head * region, char * header){
-+    return sprintf(header, "P5\n%d\n%d\n1\n", region->cols, region->rows);
-+}
-+
-+/*!
-+   \brief Create category raster conditions file.
-+    
-+   \param cat_rast_region region to be file generated for
-+   \param cat_rast path of generated category raster file
-+ */
-+int I_create_cat_rast(struct Cell_head * cat_rast_region,  const char * cat_rast)
-+{
-+    FILE * f_cat_rast;
-+    char cat_rast_header[1024];//TODO magic number 
-+    int i_row, i_col;
-+    int head_nchars;
-+
-+    unsigned char * row_data;
-+
-+    f_cat_rast = fopen(cat_rast, "wb");
-+    if(!f_cat_rast) {
-+        G_warning("Unable to create category raster condition file <%s>.", cat_rast);
-+        return -1;
-+    }
-+
-+    head_nchars = get_cat_rast_header(cat_rast_region, cat_rast_header);
-+
-+    fwrite(cat_rast_header, sizeof(char), head_nchars/sizeof(char), f_cat_rast);
-+    if (ferror(f_cat_rast)){
-+        fclose(f_cat_rast);
-+        G_warning(_("Unable to write header into category raster condition file <%s>."), cat_rast);
-+        return -1;
-+    }
-+
-+    row_data = (unsigned char *) G_malloc(cat_rast_region->cols * sizeof(unsigned char));
-+    for(i_col = 0; i_col < cat_rast_region->cols; i_col++)
-+        row_data[i_col] = 0 & 255;
-+
-+    for(i_row = 0; i_row < cat_rast_region->rows; i_row++) {
-+        fwrite(row_data, sizeof(unsigned char), (cat_rast_region->cols)/sizeof(unsigned char), f_cat_rast);
-+        if (ferror(f_cat_rast))
-+        {
-+            fclose(f_cat_rast);
-+            G_warning(_("Unable to write into category raster condition file <%s>."), cat_rast);
-+            return -1;
-+        }
-+    }
-+
-+    fclose(f_cat_rast);
-+    return 0;
-+}
-+
-+static int print_reg(struct Cell_head * intersec, const char * pref, int dbg_level)
-+{
-+    G_debug(dbg_level, "%s:\n n:%f\ns:%f\ne:%f\nw:%f\nns_res:%f\new_res:%f", pref, intersec->north, intersec->south, 
-+               intersec->east, intersec->west, intersec->ns_res, intersec->ew_res);
-+}
-+
-+/*!
-+   \brief Find intersection region of two regions.
-+
-+   \param A pointer to intersected region
-+   \param B pointer to intersected region
-+   \param [out] intersec pointer to intersection region of regions A B (relevant params of the region are: south, north, east, west)
-+
-+   \return  0 if interection exists
-+   \return -1 if regions does not intersect
-+ */
-+static int regions_intersecion(struct Cell_head * A, struct Cell_head * B, struct Cell_head * intersec)
-+{
-+
-+    if(B->north < A->south) return -1;
-+    else if(B->north > A->north) intersec->north = A->north;
-+    else intersec->north = B->north;
-+
-+    if(B->south > A->north) return -1;
-+    else if(B->south < A->south) intersec->south = A->south;
-+    else intersec->south = B->south;
-+
-+    if(B->east < A->west) return -1;
-+    else if(B->east > A->east) intersec->east = A->east;
-+    else intersec->east = B->east;
-+
-+    if(B->west > A->east) return -1;
-+    else if(B->west < A->west) intersec->west = A->west;
-+    else intersec->west = B->west;
-+
-+    if(intersec->north == intersec->south) return -1;
-+
-+    if(intersec->east == intersec->west) return -1;
-+
-+    return 0;
-+
-+}
-+
-+/*!
-+   \brief Get rows and cols numbers, which defines intersection of the regions.
-+  
-+   \param A pointer to intersected region
-+   \param B pointer to intersected region (A and B must have same resolution)
-+   \param [out] A_bounds rows and cols numbers of A stored in south, north, east, west, which defines intersection of A and B
-+   \param [out] B_bounds rows and cols numbers of B stored in south, north, east, west, which defines intersection of A and B
-+
-+   \return  0 if interection exists
-+   \return -1 if regions do not intersect
-+   \return -2 resolution of regions is not same 
-+*/
-+static int get_rows_and_cols_bounds(struct Cell_head * A,  struct Cell_head * B, struct Cell_head * A_bounds,  struct Cell_head * B_bounds)
-+{
-+    float ns_res, ew_res;
-+
-+    struct Cell_head intersec;
-+
-+    /* TODO is it right check? */
-+    if(abs(A->ns_res - B->ns_res) > GRASS_EPSILON) {
-+        G_debug(0, "'get_rows_and_cols_bounds' ns_res does not fit, A->ns_res: %f B->ns_res: %f", A->ns_res, B->ns_res);
-+        return -2;
-+    }
-+
-+    if(abs(A->ew_res - B->ew_res) > GRASS_EPSILON) {
-+        G_debug(0, "'get_rows_and_cols_bounds' ew_res does not fit, A->ew_res: %f B->ew_res: %f", A->ew_res, B->ew_res);
-+        return -2;
-+    }
-+
-+    ns_res = A->ns_res;
-+    ew_res = A->ew_res;
-+
-+    if(regions_intersecion(A, B, &intersec) == -1)
-+        return -1;
-+
-+    A_bounds->north = ceil((A->north - intersec.north - ns_res * 0.5) / ns_res);
-+    A_bounds->south = ceil((A->north - intersec.south - ns_res * 0.5) / ns_res);
-+
-+    A_bounds->east = ceil((intersec.east - A->west - ew_res * 0.5) / ew_res);
-+    A_bounds->west = ceil((intersec.west - A->west - ew_res * 0.5) / ew_res);
-+
-+    B_bounds->north = ceil((B->north - intersec.north - ns_res * 0.5) / ns_res);
-+    B_bounds->south = ceil((B->north - intersec.south - ns_res * 0.5) / ns_res);
-+
-+    B_bounds->east = ceil((intersec.east - B->west - ew_res * 0.5) / ew_res);
-+    B_bounds->west = ceil((intersec.west - B->west - ew_res * 0.5) / ew_res);
-+
-+    return 0;
-+}
-+
-+/*!
-+   \brief Insert raster map patch into pgm file.
-+    Warning: calls Rast_set_window
-+
-+   \param patch_rast name of raster map
-+   \param cat_rast_region region of category raster file
-+   \param cat_rast path to category raster file
-+
-+   \return  0 on success
-+   \return -1 on failure
-+*/
-+int I_insert_patch_to_cat_rast(const char * patch_rast, struct Cell_head * cat_rast_region,  const char * cat_rast)
-+{
-+
-+    FILE * f_cat_rast;
-+    struct Cell_head patch_region, patch_bounds, cat_rast_bounds;
-+    char cat_rast_header[1024];//TODO magic number 
-+    int i_row, i_col, ncols, nrows, cat_rast_col, patch_col, val;
-+    int head_nchars, ret;
-+    int fd_patch_rast, init_shift, step_shift;
-+    unsigned char * patch_data;
-+
-+    char * null_chunk_row;
-+
-+    const char *mapset;
-+
-+    struct Cell_head patch_lines, cat_rast_lines;
-+
-+    unsigned char * row_data;
-+
-+    f_cat_rast = fopen(cat_rast, "rb+");
-+    if(!f_cat_rast) {
-+        G_warning(_("Unable to open category raster condtions file <%s>."), cat_rast);
-+        return -1;
-+    }
-+
-+    head_nchars = get_cat_rast_header(cat_rast_region, cat_rast_header);
-+    if ((mapset = G_find_raster(patch_rast,"")) == NULL) {
-+        fclose(f_cat_rast);
-+        G_warning(_("Unable to find patch raster <%s>."), patch_rast);
-+        return -1;
-+    }
-+
-+    Rast_get_cellhd(patch_rast, mapset, &patch_region);
-+    Rast_set_window(&patch_region);
-+            
-+    if ((fd_patch_rast = Rast_open_old(patch_rast, mapset)) < 0) {
-+        fclose(f_cat_rast);
-+        return -1;
-+    }
-+
-+    ret = get_rows_and_cols_bounds(cat_rast_region, &patch_region, &cat_rast_bounds, &patch_bounds);
-+    if(ret == -2) { 
-+        G_warning(_("Resolutions of patch <%s> and patched file <%s> are not same."), patch_rast, cat_rast);
-+
-+        Rast_close(fd_patch_rast);
-+        fclose(f_cat_rast);
-+
-+        return -1;
-+    }
-+    else if (ret == -1){
-+
-+        Rast_close(fd_patch_rast);
-+        fclose(f_cat_rast);
-+
-+        return 0;
-+    }
-+
-+    ncols = cat_rast_bounds.east - cat_rast_bounds.west;
-+    nrows = cat_rast_bounds.south - cat_rast_bounds.north;
-+
-+    patch_data = (unsigned char *) G_malloc(ncols * sizeof(unsigned char));
-+
-+    init_shift = head_nchars + cat_rast_region->cols * cat_rast_bounds.north + cat_rast_bounds.west;
-+
-+    if(fseek(f_cat_rast, init_shift, SEEK_SET) != 0) {
-+        G_warning(_("Corrupted  category raster conditions file <%s> (fseek failed)"), cat_rast);
-+
-+        Rast_close(fd_patch_rast);
-+        G_free(null_chunk_row);
-+        fclose(f_cat_rast);
-+
-+        return -1;
-+    }
-+
-+    step_shift = cat_rast_region->cols - ncols;
-+
-+    null_chunk_row =  Rast_allocate_null_buf();
-+    
-+    for(i_row = 0; i_row < nrows; i_row++) {
-+        Rast_get_null_value_row (fd_patch_rast, null_chunk_row, i_row + patch_bounds.north);
-+
-+        for(i_col = 0; i_col < ncols; i_col++) {
-+            patch_col = patch_bounds.west + i_col;
-+
-+            if(null_chunk_row[patch_col] != 1) 
-+                patch_data[i_col] = 1 & 255;
-+            else {
-+                patch_data[i_col] = 0 & 255;
-+            }
-+        }
-+
-+        fwrite(patch_data, sizeof(unsigned char), (ncols)/sizeof(unsigned char), f_cat_rast);
-+        if (ferror(f_cat_rast))
-+        {
-+            G_warning(_("Unable to write into category raster conditions file <%s>"), cat_rast);
-+            
-+            Rast_close(fd_patch_rast);
-+            G_free(null_chunk_row);
-+            fclose(f_cat_rast);
-+
-+            return -1;
-+        }
-+        if(fseek(f_cat_rast, step_shift, SEEK_CUR) != 0) {
-+            G_warning(_("Corrupted  category raster conditions file <%s> (fseek failed)"), cat_rast);
-+            
-+            Rast_close(fd_patch_rast);
-+            G_free(null_chunk_row);
-+            fclose(f_cat_rast);
-+            
-+            return -1;
-+        }
-+    }
-+
-+    Rast_close(fd_patch_rast);
-+    G_free(null_chunk_row);
-+    fclose(f_cat_rast);
-+    return 0;
-+}
-+
-+/*!
-+   \brief Updates scatter plots data in category by pixels which meets category conditions.
-+  
-+   \param bands_rows data represents data describig one row from raster band
-+   \param belongs_pix array which defines which pixels belongs to category (1 value) and which not (0 value)
-+   \param [out] scatts pointer to scScatts struct of type SC_SCATT_DATA, which are modified according to values in belongs_pix
-+*/
-+static inline void update_cat_scatt_plts(struct rast_row * bands_rows, unsigned short * belongs_pix, struct scScatts * scatts)
-+{
-+    int band_axis_1, band_axis_2, i_scatt, array_idx, cat_idx, i_chunk_rows_pix, max_arr_idx;
-+
-+    CELL * b_1_row;
-+    CELL * b_2_row;
-+    char * b_1_null_row,* b_2_null_row;
-+    struct rast_row b_1_rast_row, b_2_rast_row;
-+
-+    struct Range b_1_range, b_2_range;
-+    int b_1_range_size;
-+
-+    int row_size = Rast_window_cols();
-+
-+    int * scatts_bands = scatts->scatts_bands;
-+
-+    for(i_scatt = 0; i_scatt < scatts->n_a_scatts; i_scatt++)
-+    {   
-+        b_1_rast_row = bands_rows[scatts_bands[i_scatt * 2]];
-+        b_2_rast_row = bands_rows[scatts_bands[i_scatt * 2 + 1]];
-+
-+        b_1_row = b_1_rast_row.row;
-+        b_2_row = b_2_rast_row.row;
-+
-+        b_1_null_row =  b_1_rast_row.null_row;
-+        b_2_null_row =  b_2_rast_row.null_row;
-+
-+        b_1_range = b_1_rast_row.rast_range;
-+        b_2_range = b_2_rast_row.rast_range;
-+        
-+        b_1_range_size = b_1_range.max - b_1_range.min + 1;
-+        max_arr_idx = (b_1_range.max -  b_1_range.min + 1) * (b_2_range.max -  b_2_range.min + 1);
-+
-+        for(i_chunk_rows_pix = 0; i_chunk_rows_pix < row_size; i_chunk_rows_pix++)
-+        {
-+            /* pixel does not belongs to scatter plot or has null value in one of the bands */
-+            if(!belongs_pix[i_chunk_rows_pix] || 
-+                b_1_null_row[i_chunk_rows_pix] == 1 || 
-+                b_2_null_row[i_chunk_rows_pix] == 1)                
-+                continue;
-+
-+            /* index in scatter plot array */
-+            array_idx = b_1_row[i_chunk_rows_pix] - b_1_range.min + (b_2_row[i_chunk_rows_pix] - b_2_range.min) * b_1_range_size;
-+
-+            if(array_idx < 0 || array_idx >= max_arr_idx) {
-+                        G_warning ("Data inconsistent. Value computed for scatter plot is out of initialized range.");
-+                continue;
-+            }
-+
-+            /* increment scatter plot value */
-+            ++scatts->scatts_arr[i_scatt]->scatt_vals_arr[array_idx];
-+        }
-+    }
-+}
-+
-+/*!
-+   \brief Computes scatter plots data from chunk_rows.
-+
-+   \param scatts pointer to scScatts struct of type SC_SCATT_DATA, where are computed scatter plots stored
-+   \param scatt_conds pointer to scScatts struct of type SC_SCATT_CONDITIONS, where are selected areas (condtitions)stored
-+
-+   \param chunk_rows data arrays of chunk_rows from analyzed raster bands (all data in chunk_rows, null_chunk_rows and belongs_pix arrays represents same region)
-+   \param null_chunk_rows null data arrays of chunk_rows from analyzed raster bands
-+   \param row_size size of data in chunk_rows, null_chunk_rows and belongs_pix arrays
-+   \param f_cats_rasts_conds file which stores selected areas (conditions) from mapwindow see I_create_cat_rast() and I_pa
-+   \param fd_cats_rasts array of openedraster maps which represents all selected pixels for category
-+   \param region analysis region
-+
-+   \return  0 on success
-+   \return -1 on failure
-+*/
-+static inline int compute_scatts_from_chunk_row(struct Cell_head *region, struct scCats * scatt_conds, 
-+                                                FILE ** f_cats_rasts_conds, struct rast_row * bands_rows, 
-+                                                struct scCats * scatts, int * fd_cats_rasts)
-+{
-+
-+    int i_rows_pix, i_cat, i_scatt, n_a_scatts, n_pixs;
-+    int cat_id, scatt_plts_cat_idx, array_idx, max_arr_idx;
-+    char * b_1_null_row,* b_2_null_row;
-+    struct rast_row b_1_rast_row, b_2_rast_row;
-+    CELL * cat_rast_row;
-+
-+    struct scScatts * scatts_conds;
-+    struct scScatts * scatts_scatt_plts;
-+    struct scdScattData * conds;
-+
-+    struct Range b_1_range, b_2_range;
-+    int b_1_range_size;
-+
-+    int * scatts_bands;
-+    struct scdScattData ** scatts_arr;
-+
-+    CELL * b_1_row;
-+    CELL * b_2_row;
-+    unsigned char * i_scatt_conds;
-+
-+    int row_size = Rast_window_cols();
-+
-+    unsigned short * belongs_pix = (unsigned short *) G_malloc(row_size * sizeof(unsigned short)); 
-+    unsigned char * rast_pixs = (unsigned char *) G_malloc(row_size * sizeof(unsigned char));
-+    cat_rast_row =  Rast_allocate_c_buf();
-+
-+     
-+    for(i_cat = 0; i_cat < scatt_conds->n_a_cats; i_cat++)
-+    {
-+        scatts_conds = scatt_conds->cats_arr[i_cat];
-+
-+        cat_id = scatt_conds->cats_ids[i_cat];
-+
-+        scatt_plts_cat_idx = scatts->cats_idxs[cat_id];
-+        if(scatt_plts_cat_idx < 0)
-+            continue;
-+        scatts_scatt_plts = scatts->cats_arr[scatt_plts_cat_idx];
-+
-+        G_zero(belongs_pix, row_size * sizeof(unsigned short));
-+
-+        /* if category has no conditions defined, scatter plots without any constraint are computed (default scatter plots) */
-+        if(!scatts_conds->n_a_scatts && !f_cats_rasts_conds[i_cat]) {
-+            for(i_scatt = 0; i_scatt < scatts_scatt_plts->n_a_scatts; i_scatt++)
-+            {       
-+                /* all pixels belongs */
-+                for(i_rows_pix = 0; i_rows_pix < row_size; i_rows_pix++)                
-+                    belongs_pix[i_rows_pix] = 1;
-+            }
-+        }
-+        /* compute belonging pixels for defined conditions */
-+        else
-+        {
-+            scatts_bands = scatts_conds->scatts_bands;
-+
-+            /* check conditions from category raster condtitions file */
-+            if(f_cats_rasts_conds[i_cat]) {
-+                n_pixs = fread(rast_pixs, sizeof(unsigned char), (row_size)/sizeof(unsigned char), f_cats_rasts_conds[i_cat]);
-+
-+                if (ferror(f_cats_rasts_conds[i_cat]))
-+                {
-+                    G_free(rast_pixs);
-+                    G_free(belongs_pix);
-+                    G_warning(_("Unable to read from category raster condtition file."));
-+                    return -1;
-+                }
-+                if (n_pixs != n_pixs) {
-+                    G_free(rast_pixs);
-+                    G_free(belongs_pix);
-+                    G_warning(_("Invalid size of category raster conditions file."));
-+                    return -1;
-+
-+                }
-+
-+                for(i_rows_pix = 0; i_rows_pix < row_size; i_rows_pix++)
-+                {
-+                    if(rast_pixs[i_rows_pix] != 0 & 255)
-+                        belongs_pix[i_rows_pix] = 1;
-+                }
-+            }
-+
-+            /* check condtions defined in scatter plots*/
-+            for(i_scatt = 0; i_scatt < scatts_conds->n_a_scatts; i_scatt++)
-+            {   
-+                b_1_rast_row = bands_rows[scatts_bands[i_scatt * 2]];
-+                b_2_rast_row = bands_rows[scatts_bands[i_scatt * 2 + 1]];
-+
-+                b_1_row = b_1_rast_row.row;
-+                b_2_row = b_2_rast_row.row;
-+
-+                b_1_null_row =  b_1_rast_row.null_row;
-+                b_2_null_row =  b_2_rast_row.null_row;
-+
-+                b_1_range = b_1_rast_row.rast_range;
-+                b_2_range = b_2_rast_row.rast_range;
-+
-+                b_1_range_size = b_1_range.max - b_1_range.min + 1;
-+                max_arr_idx = (b_1_range.max -  b_1_range.min + 1) * (b_2_range.max -  b_2_range.min + 1);
-+
-+                i_scatt_conds = scatts_conds->scatts_arr[i_scatt]->b_conds_arr;
-+
-+                for(i_rows_pix = 0; i_rows_pix < row_size; i_rows_pix++)
-+                {
-+                    /* pixels already belongs to category from category raster conditions file or contains null value in one of the bands */
-+                    if(belongs_pix[i_rows_pix] || 
-+                       b_1_null_row[i_rows_pix] == 1 || 
-+                       b_2_null_row[i_rows_pix] == 1)
-+                        continue;
-+
-+                    array_idx = b_1_row[i_rows_pix] - b_1_range.min + (b_2_row[i_rows_pix] - b_2_range.min) * b_1_range_size;
-+                    if(array_idx < 0 || array_idx >= max_arr_idx) {
-+                        G_warning ("Data inconsistent. Value computed for scatter plot is out of initialized range.");
-+                        continue;
-+                    }
-+                    /* pixels meets condtion defined in scatter plot */
-+                    if(i_scatt_conds[array_idx])
-+                        belongs_pix[i_rows_pix] = 1;
-+                }                
-+            }
-+        }
-+
-+        /* update category raster with belonging pixels */
-+        if(fd_cats_rasts[i_cat] >= 0) {
-+            Rast_set_null_value(cat_rast_row, Rast_window_cols(), CELL_TYPE); 
-+
-+            for(i_rows_pix = 0; i_rows_pix < row_size; i_rows_pix++)
-+                if(belongs_pix[i_rows_pix])
-+                    cat_rast_row[i_rows_pix] = belongs_pix[i_rows_pix];
-+
-+            Rast_put_c_row (fd_cats_rasts[i_cat], cat_rast_row); 
-+        }
-+
-+        /* update scatter plots with belonging pixels */
-+        update_cat_scatt_plts(bands_rows, belongs_pix, scatts_scatt_plts);
-+    }
-+
-+    G_free(cat_rast_row);
-+    G_free(rast_pixs);
-+    G_free(belongs_pix);
-+
-+    return 0;
-+}
-+
-+/*!
-+   \brief Get list if bands needed to be opened for analysis from scCats struct.
-+*/
-+static void get_needed_bands(struct scCats * cats, int * b_needed_bands)
-+{
-+    // results in b_needed_bands - array of bools - if item has value 1, band (defined by item index) is needed to be opened
-+    int i_cat, i_scatt, cat_id;
-+
-+    for(i_cat = 0;  i_cat < cats->n_a_cats; i_cat++)
-+    {   
-+        for(i_scatt = 0;  i_scatt < cats->cats_arr[i_cat]->n_a_scatts; i_scatt++)
-+        {   
-+            G_debug(3, "Active scatt %d in catt %d", i_scatt, i_cat);
-+
-+            b_needed_bands[cats->cats_arr[i_cat]->scatts_bands[i_scatt * 2]] = 1;
-+            b_needed_bands[cats->cats_arr[i_cat]->scatts_bands[i_scatt * 2 + 1]] = 1;
-+        }
-+    }
-+    return;
-+}
-+
-+/*!
-+   \brief Helper function for clean up.
-+*/
-+static void free_compute_scatts_data(int * fd_bands, struct rast_row * bands_rows, int n_a_bands, int * bands_ids, 
-+                                     int * fd_cats_rasts, FILE ** f_cats_rasts_conds, int n_a_cats)
-+{
-+    int i, band_id;
-+
-+    for(i = 0; i < n_a_bands; i++)
-+    {   
-+        band_id = bands_ids[i];
-+        if(band_id >= 0) {
-+            Rast_close(fd_bands[i]);
-+            G_free(bands_rows[band_id].row);
-+            G_free(bands_rows[band_id].null_row);
-+        }
-+    }
-+     
-+    if(f_cats_rasts_conds)
-+        for(i = 0; i < n_a_cats; i++)
-+            if(f_cats_rasts_conds[i])
-+                fclose(f_cats_rasts_conds[i]);
-+
-+    if(fd_cats_rasts)
-+        for(i = 0; i < n_a_cats; i++)
-+            if(fd_cats_rasts[i] >= 0)
-+                Rast_close(fd_cats_rasts[i]);
-+
-+}
-+
-+/*!
-+   \brief Compute scatter plots data.
-+
-+    If category has not defined no category raster condition file and no scatter plot with consdtion,
-+    default scatter plot is computed.
-+    Warning: calls Rast_set_window
-+
-+   \param region analysis region, beaware that all input data must be prepared for this region (bands (their ranges), cats_rasts_conds rasters...)
-+   \param region function calls Rast_set_window for this region
-+   \param scatt_conds pointer to scScatts struct of type SC_SCATT_CONDITIONS, where are stored selected areas (conditions) in scatter plots
-+   \param cats_rasts_conds paths to category raster conditions files representing selected areas (conditions) in rasters for every category 
-+   \param cats_rasts_conds index in array represents corresponding category id
-+   \param cats_rasts_conds for manupulation with category raster conditions file see also I_id_scatt_to_bands() and I_insert_patch_to_cat_rast()
-+   \param bands names of analyzed bands, order of bands is defined by their id
-+   \param n_bands number of bands
-+   \param [out] scatts pointer to scScatts struct of type SC_SCATT_DATA, where are computed scatter plots stored
-+   \param [out] cats_rasts array of raster maps names where will be stored all selected pixels for every category
-+
-+   \return  0 on success
-+   \return -1 on failure
-+*/
-+int I_compute_scatts(struct Cell_head *region, struct scCats * scatt_conds, const char ** cats_rasts_conds,
-+                     const char ** bands, int n_bands, struct scCats * scatts, const char ** cats_rasts) 
-+{
-+    const char *mapset;
-+    char header[1024];
-+
-+    int fd_cats_rasts[scatt_conds->n_a_cats];
-+    FILE * f_cats_rasts_conds[scatt_conds->n_a_cats];
-+
-+    struct rast_row bands_rows[n_bands];
-+
-+    RASTER_MAP_TYPE data_type;
-+
-+    int nrows, i_band, n_a_bands, band_id, 
-+        i, i_row, head_nchars, i_cat, id_cat;
-+   
-+    int fd_bands[n_bands];
-+    int bands_ids[n_bands];
-+    int b_needed_bands[n_bands];  
-+
-+    Rast_set_window(region);
-+
-+    for(i_band = 0; i_band < n_bands; i_band++)
-+        fd_bands[i_band] = -1;
-+    
-+    for(i_band = 0; i_band < n_bands; i_band++)
-+        bands_ids[i_band] = -1;
-+
-+    if (n_bands != scatts->n_bands ||
-+        n_bands != scatt_conds->n_bands)
-+        return -1;
-+
-+    memset(b_needed_bands, 0, (size_t)n_bands * sizeof(int));
-+
-+    get_needed_bands(scatt_conds, &b_needed_bands[0]);
-+    get_needed_bands(scatts, &b_needed_bands[0]);
-+
-+    n_a_bands = 0;
-+
-+    /* open band rasters, which are needed for computation */
-+    for(band_id = 0; band_id < n_bands; band_id++)
-+    {
-+        if(b_needed_bands[band_id])
-+        {
-+            G_debug(3, "Opening raster no. %d with name: %s", band_id, bands[band_id]);
-+
-+            if ((mapset = G_find_raster2(bands[band_id],"")) == NULL) {
-+                free_compute_scatts_data(fd_bands, bands_rows, n_a_bands, 
-+                                         bands_ids, NULL, NULL, scatt_conds->n_a_cats);
-+                G_warning(_("Unbale to read find raster <%s>"), bands[band_id]);
-+                return -1;
-+            }
-+            
-+            if ((fd_bands[n_a_bands] = Rast_open_old(bands[band_id], mapset)) < 0) {
-+                free_compute_scatts_data(fd_bands, bands_rows, n_a_bands, 
-+                                         bands_ids, NULL, NULL, scatt_conds->n_a_cats);
-+                G_warning(_("Unbale to open raster <%s>"), bands[band_id]);
-+                return -1;
-+            }
-+
-+            data_type = Rast_get_map_type(fd_bands[n_a_bands]);
-+            if(data_type != CELL_TYPE) {
-+                G_warning(_("Raster <%s> type is not <%s>"), bands[band_id], "CELL");
-+                return -1;
-+            }
-+
-+            bands_rows[band_id].row =  Rast_allocate_c_buf();
-+            bands_rows[band_id].null_row =  Rast_allocate_null_buf();
-+
-+            if(Rast_read_range(bands[band_id], mapset, &bands_rows[band_id].rast_range) != 1){
-+                free_compute_scatts_data(fd_bands, bands_rows, n_a_bands, 
-+                                         bands_ids, NULL, NULL, scatt_conds->n_a_cats);
-+                G_warning(_("Unable to read range of raster <%s>"), bands[band_id]);
-+                return -1;
-+            }      
-+
-+            bands_ids[n_a_bands] = band_id;
-+            ++n_a_bands;
-+        }
-+    }
-+
-+    /* open category rasters condition files and category rasters */
-+    for(i_cat = 0; i_cat < scatts->n_a_cats; i_cat++)
-+    {
-+        id_cat = scatts->cats_ids[i_cat];
-+        if(cats_rasts[id_cat]) {
-+            fd_cats_rasts[i_cat] = Rast_open_new(cats_rasts[id_cat], CELL_TYPE);   
-+        }
-+        else
-+            fd_cats_rasts[i_cat] = -1;
-+
-+        if(cats_rasts_conds[id_cat]) {
-+            f_cats_rasts_conds[i_cat] = fopen(cats_rasts_conds[id_cat], "r");
-+            if(!f_cats_rasts_conds[i_cat]) {
-+                free_compute_scatts_data(fd_bands, bands_rows, n_a_bands, bands_ids, 
-+                                         f_cats_rasts_conds, f_cats_rasts_conds, scatt_conds->n_a_cats);
-+                G_warning(_("Unable to open category raster condtition file <%s>"), bands[band_id]);
-+                return -1;
-+            }
-+        }
-+        else
-+            f_cats_rasts_conds[i_cat] = NULL;
-+    }
-+
-+    head_nchars =  get_cat_rast_header(region, header);
-+    for(i_cat = 0; i_cat < scatt_conds->n_a_cats; i_cat++)
-+        if(f_cats_rasts_conds[i_cat])
-+            if( fseek(f_cats_rasts_conds[i_cat] , head_nchars, SEEK_SET) != 0) {
-+                G_warning(_("Corrupted category raster conditions file (fseek failed)"));
-+                return -1;
-+            }
-+
-+    nrows = Rast_window_rows();
-+
-+    /* analyze bands by rows */
-+    for (i_row = 0; i_row < nrows; i_row++)
-+    {
-+        for(i_band = 0; i_band < n_a_bands; i_band++)
-+        {   
-+            band_id = bands_ids[i_band];
-+            Rast_get_c_row(fd_bands[i_band], bands_rows[band_id].row, i_row);
-+            Rast_get_null_value_row (fd_bands[i_band], bands_rows[band_id].null_row, i_row);
-+        }
-+        if(compute_scatts_from_chunk_row(region, scatt_conds, f_cats_rasts_conds, bands_rows, scatts, fd_cats_rasts) == -1) 
-+        {
-+            free_compute_scatts_data(fd_bands, bands_rows, n_a_bands, bands_ids, fd_cats_rasts, 
-+                                     f_cats_rasts_conds, scatt_conds->n_a_cats);
-+            return -1;
-+        }
-+ 
-+    }
-+    free_compute_scatts_data(fd_bands, bands_rows, n_a_bands, bands_ids, 
-+                             fd_cats_rasts, f_cats_rasts_conds, scatt_conds->n_a_cats); 
-+    return 0;    
-+}
-+
-+/*!
-+   \brief Merge arrays according to opacity.
-+    Every pixel in array must be represented by 4 values (RGBA). 
-+    
-+
-+   \param merged_arr array which will be overlayd with overlay_arr
-+   \param overlay_arr array to be merged_arr overlayed with
-+   \param rows number of rows for the both arrays
-+   \param cols number of columns for the both arrays
-+   \param alpha transparency of the overlay array for merging
-+
-+   \return  0
-+*/
-+int I_merge_arrays(unsigned char *  merged_arr, unsigned char *  overlay_arr, unsigned rows, unsigned cols, double alpha)
-+{
-+    unsigned int i_row, i_col, i_b;
-+    unsigned int row_idx, col_idx, idx;
-+    unsigned int c_a_i, c_a;
-+
-+    for(i_row = 0; i_row < rows; i_row++)
-+    {
-+        row_idx = i_row * cols;
-+        for(i_col = 0; i_col < cols; i_col++)
-+        {
-+                col_idx = 4 * (row_idx + i_col);
-+                idx = col_idx + 3;
-+
-+                c_a = overlay_arr[idx] * alpha;
-+                c_a_i = 255 - c_a;
-+
-+                merged_arr[idx] = (c_a_i * (int)merged_arr[idx] + c_a * 255) / 255;
-+                
-+                for(i_b = 0; i_b < 3; i_b++)
-+                {
-+                    idx = col_idx + i_b;
-+                    merged_arr[idx] = (c_a_i * (int)merged_arr[idx] + c_a * (int)overlay_arr[idx]) / 255;
-+                }
-+        }
-+    }
-+    return 0; 
-+}
-+
-+
-+int I_apply_colormap(unsigned char * vals, unsigned char * vals_mask, unsigned vals_size, unsigned char * colmap, unsigned char * col_vals){
-+    unsigned int i_val;
-+    int v, i, i_cm;
-+
-+    for(i_val = 0; i_val < vals_size; i_val++){
-+        i_cm = 4 * i_val;
-+
-+        v = vals[i_val];
-+
-+        if(vals_mask && vals_mask[i_val])
-+            for(i = 0; i < 4; i++) col_vals[i_cm + i] = colmap[258 * 4 + i];
-+        else if(v > 255)
-+            for(i = 0; i < 4; i++) col_vals[i_cm + i] = colmap[257 * 4 + i];
-+        else if(v < 0)
-+            for(i = 0; i < 4; i++) col_vals[i_cm + i] = colmap[256 * 4 + i];
-+        else
-+            for(i = 0; i < 4; i++){ col_vals[i_cm + i] = colmap[v * 4 + i];
-+        }
-+    }
-+    return 0;
-+}
-+
-+
-+int I_rasterize(double * polygon, int pol_n_pts, unsigned char * rast, unsigned char val, struct Cell_head *rast_region){
-+    int i;
-+    int x0, x1, y;
-+    int row, row_idx, i_col;
-+
-+    IClass_perimeter perimeter;
-+
-+    struct line_pnts *pol; 
-+    pol = Vect_new_line_struct();
-+
-+    for(i = 0; i < pol_n_pts; i++) {
-+        Vect_append_point(pol,
-+                          polygon[i*2], 
-+                          polygon[i*2 + 1], 
-+                          0.0);
-+    }
-+
-+    Rast_set_window(rast_region);
-+
-+    make_perimeter(pol, &perimeter, rast_region);
-+    for (i = 1; i < perimeter.npoints; i += 2) {
-+        y = perimeter.points[i].y;
-+        if (y != perimeter.points[i - 1].y) {
-+            G_warning(_("prepare_signature: scan line %d has odd number of points."),
-+                  (i + 1) / 2);
-+            return 1;
-+        }
-+
-+        x0 = perimeter.points[i - 1].x;
-+        x1 = perimeter.points[i].x;
-+
-+        if (x0 > x1) {
-+            G_warning(_("signature: perimeter points out of order."));
-+            return 1;
-+        }
-+
-+        row = (rast_region->rows - y);
-+        if(row < 0 || row >= rast_region->rows) {
-+            continue;
-+        }
-+
-+        row_idx = rast_region->cols * row;
-+
-+        for(i_col = x0; i_col <= x1; i_col++) {
-+            if(i_col < 0 || i_col >= rast_region->cols) {
-+                continue;
-+            }
-+            rast[row_idx + i_col] = val;
-+        }
-+    }
-+
-+    Vect_destroy_line_struct(pol); 
-+    G_free(perimeter.points);  
-+    return 0;
-+}



More information about the grass-commit mailing list