[GRASS-SVN] r56955 - in grass-addons/grass7/raster: . r.wf
svn_grass at osgeo.org
svn_grass at osgeo.org
Sat Jun 29 08:55:42 PDT 2013
Author: madi
Date: 2013-06-29 08:55:41 -0700 (Sat, 29 Jun 2013)
New Revision: 56955
Added:
grass-addons/grass7/raster/r.wf/
grass-addons/grass7/raster/r.wf/Makefile
grass-addons/grass7/raster/r.wf/r.wf
grass-addons/grass7/raster/r.wf/r.wf.html
Log:
r.wf ported to G7
Added: grass-addons/grass7/raster/r.wf/Makefile
===================================================================
--- grass-addons/grass7/raster/r.wf/Makefile (rev 0)
+++ grass-addons/grass7/raster/r.wf/Makefile 2013-06-29 15:55:41 UTC (rev 56955)
@@ -0,0 +1,7 @@
+MODULE_TOPDIR = ../..
+
+PGM = r.wf
+
+include $(MODULE_TOPDIR)/include/Make/Script.make
+
+default: script
Added: grass-addons/grass7/raster/r.wf/r.wf
===================================================================
--- grass-addons/grass7/raster/r.wf/r.wf (rev 0)
+++ grass-addons/grass7/raster/r.wf/r.wf 2013-06-29 15:55:41 UTC (rev 56955)
@@ -0,0 +1,136 @@
+#!/usr/bin/env python
+################################################################################
+#
+# MODULE: r.wf.py
+#
+# AUTHOR(S): Massimo Di Stefano, Francesco Di Stefano, Margherita Di Leo
+#
+#
+# PURPOSE: The module produces the Width Function of a basin. The Width
+# Function W(x) gives the number of the cells in a basin at a
+# flow distance x from the outlet (distance-area function)
+#
+# COPYRIGHT: (c) 2010 Massimo Di Stefano, Francesco Di Stefano, Margherita Di Leo
+#
+# This program is free software under the GNU General Public
+# License (>=v2). Read the file COPYING that comes with GRASS
+# for details.
+#
+# REQUIRES: Matplotlib
+# http://matplotlib.sourceforge.net/
+#
+#
+################################################################################
+#%module
+#% description:
+#% keywords: raster
+#%end
+
+#%option
+#% key: map
+#% type: string
+#% gisprompt: old,raster,raster
+#% key_desc: name
+#% description: Distance to outlet map (from r.stream.distance)
+#% required: yes
+#%end
+
+#%option
+#% key: image
+#% type: string
+#% gisprompt: new_file,file,input
+#% key_desc: image
+#% description: output plot (png)
+#% required: yes
+#%END
+
+
+import sys
+import os
+import matplotlib #required by windows
+matplotlib.use('wx') #required by windows
+import matplotlib.pyplot as plt
+import grass.script as grass
+import numpy as np
+
+def main():
+ stats = grass.read_command('r.stats', input = options['map'], sep = 'space', nv = '*', nsteps = '255', flags = 'Anc').split('\n')[:-1]
+
+ # res = cellsize
+ res = float(grass.read_command('g.region', rast = options['map'], flags = 'm').strip().split('\n')[4].split('=')[1])
+ zn = np.zeros((len(stats),4),float)
+ kl = np.zeros((len(stats),2),float)
+ prc = np.zeros((9,2),float)
+
+ for i in range(len(stats)):
+ if i == 0:
+ zn[i,0], zn[i,1] = map(float, stats[i].split(' '))
+ zn[i,1] = zn[i,1]
+ zn[i,2] = zn[i,1] * res
+ if i != 0:
+ zn[i,0], zn[i,1] = map(float, stats[i].split(' '))
+ zn[i,2] = zn[i,1] + zn[i-1,2]
+ zn[i,3] = zn[i,1] * (res**2)
+
+ totcell = sum(zn[:,1])
+ print "Tot. cells", totcell
+ totarea = totcell * (res**2)
+ print "Tot. area", totarea
+ maxdist = max(zn[:,0])
+ print "Max distance", maxdist
+
+ for i in range(len(stats)):
+ kl[i,0] = zn[i,0]
+ kl[i,1] = zn[i,2] / totcell
+
+ # quantiles
+ prc[0,0] , prc[0,1] = findint(kl,0.05) , 0.05
+ prc[1,0] , prc[1,1] = findint(kl,0.15) , 0.15
+ prc[2,0] , prc[2,1] = findint(kl,0.3) , 0.3
+ prc[3,0] , prc[3,1] = findint(kl,0.4) , 0.4
+ prc[4,0] , prc[4,1] = findint(kl,0.5) , 0.5
+ prc[5,0] , prc[5,1] = findint(kl,0.6) , 0.6
+ prc[6,0] , prc[6,1] = findint(kl,0.7) , 0.7
+ prc[7,0] , prc[7,1] = findint(kl,0.85) , 0.85
+ prc[8,0] , prc[8,1] = findint(kl,0.95) , 0.95
+
+ # plot
+ plotImage(zn[:,0], zn[:,3], options['image']+'_width_function.png','-','x','W(x)','Width Function')
+
+ print "==========================="
+ print "Whidth Function | quantiles"
+ print "==========================="
+ print '%.0f' %findint(kl,0.05) , "|", 0.05
+ print '%.0f' %findint(kl,0.15) , "|", 0.15
+ print '%.0f' %findint(kl,0.3) , "|", 0.3
+ print '%.0f' %findint(kl,0.4) , "|", 0.4
+ print '%.0f' %findint(kl,0.5) , "|", 0.5
+ print '%.0f' %findint(kl,0.6) , "|", 0.6
+ print '%.0f' %findint(kl,0.7) , "|", 0.7
+ print '%.0f' %findint(kl,0.85) , "|", 0.85
+ print '%.0f' %findint(kl,0.95) , "|", 0.95
+ print '\n'
+ print 'Done!'
+
+def plotImage(x,y,image,type,xlabel,ylabel,title):
+ plt.plot(x, y, type)
+ plt.ylabel(ylabel)
+ plt.xlabel(xlabel)
+ plt.xlim( min(x), max(x) )
+ plt.ylim( min(y), max(y) )
+ plt.title(title)
+ plt.grid(True)
+ plt.savefig(image)
+ plt.close('all')
+
+def findint(kl,f):
+ Xf = np.abs(kl-f); Xf = np.where(Xf==Xf.min())
+ z1 , z2 , f1 , f2 = kl[float(Xf[0])][0] , kl[float(Xf[0]-1)][0] , kl[float(Xf[0])][1] , kl[float(Xf[0]-1)][1]
+ z = z1 + ((z2 - z1) / (f2 - f1)) * (f - f1)
+ return z
+
+
+if __name__ == "__main__":
+ options, flags = grass.parser()
+ sys.exit(main())
+
Property changes on: grass-addons/grass7/raster/r.wf/r.wf
___________________________________________________________________
Added: svn:executable
+ *
Added: grass-addons/grass7/raster/r.wf/r.wf.html
===================================================================
--- grass-addons/grass7/raster/r.wf/r.wf.html (rev 0)
+++ grass-addons/grass7/raster/r.wf/r.wf.html 2013-06-29 15:55:41 UTC (rev 56955)
@@ -0,0 +1,35 @@
+<h2>DESCRIPTION</h2>
+<em>r.wf</em> produces the Width Function of a basin. The Width Function W(x) gives the number of the cells in a basin at a flow distance x from the outlet (it is also referred as distance-area function). It is important to underline the fact that the distance is not the euclidean one, but it is measured along the flowpath towards the outlet.
+
+<h3>Input</h3>
+
+<dt><em>Distance to outlet map: </em>Input map, required. It is obtained by r.stream.distance (with
+ the option: distance to outlet, flag -o) </dt>
+
+<dt><em>Output plot: </em> Path and name of the plot</dt>
+
+<h3>Output</h3>
+<p>It provides the quantiles of the area - distance distribution and the plot of the Width Function. In x axis is reported the distance and in y axis is the area.
+
+<h3>Dependencies</h3>
+<ul>
+<li>Matplotlib</li>
+</ul>
+
+<h2>SEE ALSO</h2>
+
+<em>
+<a href="r.stream.distance.html">r.stream.distance</a>,
+<a href="r.basin.html">r.basin</a>,
+</em>
+
+<h2>REFERENCES</h2>
+<p><em>Rodriguez-Iturbe I., Rinaldo A. — Fractal River Basins, Chance and Self-Organization. Cambridge Press (2001)</em>
+<p><em>In Italian: Di Leo M., Di Stefano M., Claps P., Sole A. — Caratterizzazione morfometrica del bacino idrografico in GRASS GIS
+(Morphometric characterization of the catchment in GRASS GIS environment), <a href="http://geomatica.como.polimi.it/workbooks/">Geomatics Workbooks</a>, n. 9 (2010)</em></a>
+
+<h2>AUTHORS</h2>
+<p>Margherita Di Leo (dileomargherita AT gmail DOT com), Massimo Di Stefano, Francesco Di Stefano
+
+<p>
+<i>Last changed: $Date$</i>
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