[GRASS-SVN] r50555 - in grass/trunk/temporal: . tv.observe.rast
svn_grass at osgeo.org
svn_grass at osgeo.org
Mon Jan 30 08:04:48 EST 2012
Author: huhabla
Date: 2012-01-30 05:04:48 -0800 (Mon, 30 Jan 2012)
New Revision: 50555
Added:
grass/trunk/temporal/tv.observe.rast/
grass/trunk/temporal/tv.observe.rast/Makefile
grass/trunk/temporal/tv.observe.rast/test.tv.observe.rast.sh
grass/trunk/temporal/tv.observe.rast/tv.observe.rast.html
grass/trunk/temporal/tv.observe.rast/tv.observe.rast.py
Log:
New module to observe space time raster datasets using vector points.
Added: grass/trunk/temporal/tv.observe.rast/Makefile
===================================================================
--- grass/trunk/temporal/tv.observe.rast/Makefile (rev 0)
+++ grass/trunk/temporal/tv.observe.rast/Makefile 2012-01-30 13:04:48 UTC (rev 50555)
@@ -0,0 +1,7 @@
+MODULE_TOPDIR = ../../
+
+PGM = tv.observe.rast
+
+include $(MODULE_TOPDIR)/include/Make/Script.make
+
+default: script $(TEST_DST)
Added: grass/trunk/temporal/tv.observe.rast/test.tv.observe.rast.sh
===================================================================
--- grass/trunk/temporal/tv.observe.rast/test.tv.observe.rast.sh (rev 0)
+++ grass/trunk/temporal/tv.observe.rast/test.tv.observe.rast.sh 2012-01-30 13:04:48 UTC (rev 50555)
@@ -0,0 +1,31 @@
+# Test the temporal and spatial sampling of raster maps by vector point maps
+# We need to set a specific region in the
+# @preprocess step of this test.
+# The region setting should work for UTM and LL test locations
+g.region s=0 n=80 w=0 e=120 b=0 t=50 res=10 res3=10 -p3
+
+r.mapcalc --o expr="prec_1 = 100.0"
+r.mapcalc --o expr="prec_2 = 200.0"
+r.mapcalc --o expr="prec_3 = 300"
+r.mapcalc --o expr="prec_4 = 400"
+r.mapcalc --o expr="prec_5 = 500.0"
+r.mapcalc --o expr="prec_6 = 600.0"
+
+v.random --o -z output=prec n=5 seed=1
+
+t.create --o type=strds temporaltype=absolute output=precip_abs1 title="A test" descr="A test"
+tr.register -i input=precip_abs1 maps=prec_1,prec_2,prec_3,prec_4,prec_5,prec_6 start="2001-03-01 00:00:00" increment="1 months"
+
+# The @test
+tv.observe.rast input=prec strds=precip_abs1 output=prec_observer
+v.info prec_observer
+t.info type=stvds input=prec_observer
+
+# @postprocess
+t.remove type=rast input=prec_1,prec_2,prec_3,prec_4,prec_5,prec_6
+t.remove type=strds input=precip_abs1
+t.remove type=stvds input=prec_observer
+t.remove type=vect input=prec_observer:1,prec_observer:2,prec_observer:3,prec_observer:4,prec_observer:5,prec_observer:6
+
+g.remove vect=prec_observer
+g.remove rast=prec_1,prec_2,prec_3,prec_4,prec_5,prec_6
Added: grass/trunk/temporal/tv.observe.rast/tv.observe.rast.html
===================================================================
Added: grass/trunk/temporal/tv.observe.rast/tv.observe.rast.py
===================================================================
--- grass/trunk/temporal/tv.observe.rast/tv.observe.rast.py (rev 0)
+++ grass/trunk/temporal/tv.observe.rast/tv.observe.rast.py 2012-01-30 13:04:48 UTC (rev 50555)
@@ -0,0 +1,224 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+############################################################################
+#
+# MODULE: tv.oberve.rast
+# AUTHOR(S): Soeren Gebbert
+#
+# PURPOSE: Observe specific locations in a space time raster dataset over a periode of time using vector points
+# COPYRIGHT: (C) 2011 by the GRASS Development Team
+#
+# This program is free software under the GNU General Public
+# License (version 2). Read the file COPYING that comes with GRASS
+# for details.
+#
+#############################################################################
+
+#%module
+#% description: Observe specific locations in a space time raster dataset over a periode of time using vector points
+#% keywords: space time raster dataset
+#% keywords: space time vector dataset
+#% keywords: sampling
+#%end
+
+#%option
+#% key: input
+#% type: string
+#% description: Name of a vector map
+#% required: yes
+#% multiple: no
+#%end
+
+#%option
+#% key: strds
+#% type: string
+#% description: The space time raster dataset to use
+#% required: yes
+#% multiple: no
+#%end
+
+#%option
+#% key: column
+#% type: string
+#% description: Name of the vector column to be created and to store sampled raster values, otherwise the space time raster name is used as column name
+#% required: no
+#% multiple: no
+#%end
+
+#%option
+#% key: output
+#% type: string
+#% description: Name the new created space time vector dataset and the new vector map
+#% required: yes
+#% multiple: no
+#%end
+
+#%option
+#% key: where
+#% type: string
+#% description: A where statement for attribute selection related to the input dataset without "WHERE" e.g: "cat < 200"
+#% required: no
+#% multiple: no
+#%end
+
+#%option
+#% key: tempwhere
+#% type: string
+#% description: A where statement for temporal selection related to the input dataset without "WHERE" e.g: "start_time < '2001-01-01' AND end_time > '2001-01-01'"
+#% required: no
+#% multiple: no
+#%end
+
+import grass.script as grass
+import grass.temporal as tgis
+import grass.script.raster as raster
+
+############################################################################
+
+def main():
+
+ # Get the options
+ input = options["input"]
+ output = options["output"]
+ strds = options["strds"]
+ where = options["where"]
+ column = options["column"]
+ tempwhere = options["tempwhere"]
+
+ if where == "" or where == " " or where == "\n":
+ where = None
+
+ # Make sure the temporal database exists
+ tgis.create_temporal_database()
+ # We need a database interface
+ dbif = tgis.sql_database_interface()
+ dbif.connect()
+
+ mapset = grass.gisenv()["MAPSET"]
+
+ if strds.find("@") >= 0:
+ strds_id = strds
+ else:
+ strds_id = strds + "@" + mapset
+
+ strds_sp = tgis.space_time_raster_dataset(strds_id)
+
+ if strds_sp.is_in_db() == False:
+ dbif.close()
+ grass.fatal(_("Dataset <%s> not found in temporal database") % (id))
+
+ strds_sp.select(dbif)
+
+ if output.find("@") >= 0:
+ id = output
+ else:
+ id = output + "@" + mapset
+
+ out_sp = tgis.space_time_vector_dataset(id)
+
+ if out_sp.is_in_db(dbif) == True and grass.overwrite() == False:
+ dbif.close()
+ grass.fatal(_("Dataset <%s> found in temporal database, use the overwrite flag to overwrite") % (id))
+
+ # Overwrite existing stvds
+ if out_sp.is_in_db(dbif) == True and grass.overwrite() == True:
+ out_sp.select()
+ out_sp.delete()
+ out_sp = tgis.space_time_vector_dataset(id)
+
+ # Select the raster maps
+ rows = strds_sp.get_registered_maps("name,mapset,start_time,end_time", tempwhere, "start_time", dbif)
+
+ if not rows:
+ dbif.close()
+ grass.fatal(_("Space time vector dataset <%s> is empty") % sg.get_id())
+
+ # Create the output space time vector dataset
+
+ out_sp.set_initial_values(strds_sp.get_temporal_type(), \
+ strds_sp.get_semantic_type(),\
+ _("Observation of space time raster dataset <%s>")%(strds_id),\
+ _("Observattion of space time raster dataset <%s> with vector map <%s>")%(strds_id, input))
+
+ out_sp.insert(dbif)
+
+ num_rows = len(rows)
+
+ # We copy the vector table and create the new layers
+ layers= ""
+ first = True
+ for layer in range(num_rows):
+ layer += 1
+ if first:
+ layers += "%i"%(layer)
+ first = False
+ else:
+ layers += ",%i"%(layer)
+
+ print layers
+
+ vectmap = output
+ ret = grass.run_command("v.category", input=input, layer=layers, output=vectmap, option="transfer", overwrite=grass.overwrite())
+ if ret != 0:
+ grass.fatal(_("Unable to create new layers for vector map <%s>") % (vectmap))
+
+ dummy = out_sp.get_new_map_instance(None)
+
+ # Sample the space time raster dataset with the vector map at specific layer with v.what.rast
+ count = 1
+ for row in rows:
+ start = row["start_time"]
+ end = row["end_time"]
+ rastmap = row["name"] + "@" + row["mapset"]
+
+ if column:
+ col_name = column
+ else:
+ # Create a new column with name of the sampled space time raster dataset
+ col_name = row["name"]
+
+ coltype = "DOUBLE PRECISION"
+ # Get raster map type
+ rasterinfo = raster.raster_info(rastmap)
+ if rasterinfo["datatype"] == "CELL":
+ coltype = "INT"
+
+ # Try to add a column
+ ret = grass.run_command("v.db.addcolumn", map=vectmap, layer=count, column="%s %s" % (col_name, coltype), overwrite=grass.overwrite())
+ if ret != 0:
+ # Try to add a new table
+ grass.message("Add table to layer %i"%(count))
+ ret = grass.run_command("v.db.addtable", map=vectmap, layer=count, columns="%s %s" % (col_name, coltype), overwrite=grass.overwrite())
+ if ret != 0:
+ dbif.close()
+ grass.fatal(_("Unable to add column %s to vector map <%s> with layer %i")%(col_name, vectmap, count))
+
+ # Call v.what.rast
+ ret = grass.run_command("v.what.rast", map=vectmap, layer=count, raster=rastmap, column=col_name, where=where)
+ if ret != 0:
+ dbif.close()
+ grass.fatal(_("Unable to run v.what.rast for vector map <%s> with layer %i and raster map <%s>")%(vectmap, count, rastmap))
+
+ vect = out_sp.get_new_map_instance(dummy.build_id(vectmap, mapset, str(count)))
+ vect.load()
+
+ if out_sp.is_time_absolute():
+ vect.set_absolute_time(start, end)
+ else:
+ vect.set_relative_time(start, end, strds_ds.get_relative_time_unit())
+
+ if vect.is_in_db():
+ vect.update(dbif)
+ else:
+ vect.insert(dbif)
+
+ out_sp.register_map(vect, dbif)
+ count += 1
+
+ out_sp.update_from_registered_maps(dbif)
+ dbif.close()
+
+if __name__ == "__main__":
+ options, flags = grass.parser()
+ main()
+
Property changes on: grass/trunk/temporal/tv.observe.rast/tv.observe.rast.py
___________________________________________________________________
Added: svn:executable
+ *
More information about the grass-commit
mailing list