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Commit 0e47d53

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Médéric RIBREUX
committedFeb 28, 2016
Add r.blend algorithm
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ltr-3_40archive/master_2
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‎python/plugins/processing/algs/grass7/description/r.blend.combine.txt

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r.blend
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r.blend.combine - Blends color components of two raster maps by a given ratio and export into a unique raster.
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Raster (r.*)
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ParameterRaster|first|Name of first raster map for blending|False
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ParameterRaster|second|Name of second raster map for blending|False
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ParameterNumber|percent|Percentage weight of first map for color blending|0.0|100.0|50.0|True
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Hardcoded|-c
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OutputRaster|output|Blended
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‎python/plugins/processing/algs/grass7/description/r.blend.rgb.txt

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r.blend
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r.blend.rgb - Blends color components of two raster maps by a given ratio and exports into three rasters.
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Raster (r.*)
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ParameterRaster|first|Name of first raster map for blending|False
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ParameterRaster|second|Name of second raster map for blending|False
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ParameterNumber|percent|Percentage weight of first map for color blending|0.0|100.0|50.0|True
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OutputRaster|output_red|Blended Red
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OutputRaster|output_green|Blended Green
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OutputRaster|output_blue|Blended Blue
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‎python/plugins/processing/algs/grass7/ext/r_blend_combine.py

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# -*- coding: utf-8 -*-
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"""
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***************************************************************************
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r_blend.py
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----------
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Date : February 2016
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Copyright : (C) 2016 by Médéric Ribreux
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Email : medspx at medspx dot fr
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***************************************************************************
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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***************************************************************************
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"""
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__author__ = 'Médéric Ribreux'
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__date__ = 'February 2016'
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__copyright__ = '(C) 2016, Médéric Ribreux'
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# This will get replaced with a git SHA1 when you do a git archive
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__revision__ = '$Format:%H$'
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def processInputs(alg):
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# If there is another raster to copy categories from
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# we need to import it with r.in.gdal rather than r.external
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first = alg.getParameterValue(u'first')
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second = alg.getParameterValue(u'second')
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if first in alg.exportedLayers.keys() and second in alg.exportedLayers.keys():
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return
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for raster in [first, second]:
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alg.setSessionProjectionFromLayer(raster, alg.commands)
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destFilename = alg.getTempFilename()
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alg.exportedLayers[raster] = destFilename
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command = 'r.in.gdal input={} output={} --overwrite -o'.format(raster, destFilename)
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alg.commands.append(command)
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alg.setSessionProjectionFromProject(alg.commands)
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region = unicode(alg.getParameterValue(alg.GRASS_REGION_EXTENT_PARAMETER))
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regionCoords = region.split(',')
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command = 'g.region'
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command += ' -a'
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command += ' n=' + unicode(regionCoords[3])
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command += ' s=' + unicode(regionCoords[2])
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command += ' e=' + unicode(regionCoords[1])
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command += ' w=' + unicode(regionCoords[0])
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cellsize = alg.getParameterValue(alg.GRASS_REGION_CELLSIZE_PARAMETER)
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if cellsize:
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command += ' res=' + unicode(cellsize)
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else:
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command += ' res=' + unicode(alg.getDefaultCellsize())
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alignToResolution = alg.getParameterValue(alg.GRASS_REGION_ALIGN_TO_RESOLUTION)
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if alignToResolution:
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command += ' -a'
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alg.commands.append(command)
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def processOutputs(alg):
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# Keep color table
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output = alg.getOutputValue(u'output')
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command = u"r.out.gdal -t createopt=\"TFW=YES,COMPRESS=LZW\" input={} output=\"{}\" --overwrite".format(
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alg.exportedLayers[output],
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output
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)
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alg.commands.append(command)
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alg.outputCommands.append(command)

‎python/plugins/processing/algs/grass7/ext/r_blend_rgb.py

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# -*- coding: utf-8 -*-
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"""
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***************************************************************************
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r_blend_rgb.py
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--------------
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Date : February 2016
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Copyright : (C) 2016 by Médéric Ribreux
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Email : medspx at medspx dot fr
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***************************************************************************
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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***************************************************************************
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"""
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__author__ = 'Médéric Ribreux'
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__date__ = 'February 2016'
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__copyright__ = '(C) 2016, Médéric Ribreux'
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# This will get replaced with a git SHA1 when you do a git archive
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__revision__ = '$Format:%H$'
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from processing.core.outputs import getOutputFromString
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def processInputs(alg):
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# If there is another raster to copy categories from
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# we need to import it with r.in.gdal rather than r.external
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first = alg.getParameterValue(u'first')
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second = alg.getParameterValue(u'second')
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if first in alg.exportedLayers.keys() and second in alg.exportedLayers.keys():
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return
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for raster in [first, second]:
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alg.setSessionProjectionFromLayer(raster, alg.commands)
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destFilename = alg.getTempFilename()
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alg.exportedLayers[raster] = destFilename
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command = 'r.in.gdal input={} output={} --overwrite -o'.format(raster, destFilename)
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alg.commands.append(command)
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alg.setSessionProjectionFromProject(alg.commands)
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region = unicode(alg.getParameterValue(alg.GRASS_REGION_EXTENT_PARAMETER))
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regionCoords = region.split(',')
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command = 'g.region'
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command += ' -a'
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command += ' n=' + unicode(regionCoords[3])
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command += ' s=' + unicode(regionCoords[2])
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command += ' e=' + unicode(regionCoords[1])
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command += ' w=' + unicode(regionCoords[0])
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cellsize = alg.getParameterValue(alg.GRASS_REGION_CELLSIZE_PARAMETER)
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if cellsize:
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command += ' res=' + unicode(cellsize)
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else:
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command += ' res=' + unicode(alg.getDefaultCellsize())
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alignToResolution = alg.getParameterValue(alg.GRASS_REGION_ALIGN_TO_RESOLUTION)
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if alignToResolution:
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command += ' -a'
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alg.commands.append(command)
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def processCommand(alg):
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# We need to remove all outputs
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basename = getOutputFromString('OutputRaster|output|Output basename')
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basename.value = 'output'
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alg.addOutput(basename)
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outputNames = ['output_{}'.format(f) for f in ['red', 'green', 'blue']]
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outputs = [alg.getOutputFromName(f) for f in outputNames]
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for output in outputNames:
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alg.exportedLayers[alg.getOutputValue(output)] = 'output' + alg.uniqueSufix
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alg.removeOutputFromName(output)
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alg.processCommand()
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# And to re-add them
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alg.removeOutputFromName('output')
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for output in outputs:
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alg.addOutput(output)
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def processOutputs(alg):
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# Export each color raster
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colors = ['red', 'green', 'blue']
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for color in colors:
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output = alg.getOutputValue('output_{}'.format(color))
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command = "r.out.gdal input={} output=\"{}\" createopt=\"TFW=YES,COMPRESS=LZW\"".format(
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alg.exportedLayers[output] + '.' + color[0], output)
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alg.commands.append(command)
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alg.outputCommands.append(command)

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