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96 lines
3.8 KiB
Python
96 lines
3.8 KiB
Python
# -*- coding: utf-8 -*-
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"""
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***************************************************************************
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r_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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def processInputs(alg):
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# We need to import all the bands and color tables of the input raster
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raster = alg.getParameterValue('input')
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if raster in alg.exportedLayers.keys():
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return
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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 introduce something clever:
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# if the input raster is multiband: export each component directly
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raster = alg.exportedLayers[alg.getParameterValue('input')]
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for color in ['red', 'green', 'blue']:
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alg.exportedLayers[alg.getOutputValue(color)] = color + alg.uniqueSufix
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commands = ["if [ $(g.list type=rast pattern='{}.*' | wc -l) -eq \"0\" ]; then".format(raster)]
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commands.append(" r.rgb input={} red={} green={} blue={} --overwrite".format(
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raster,
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alg.exportedLayers[alg.getOutputValue('red')],
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alg.exportedLayers[alg.getOutputValue('green')],
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alg.exportedLayers[alg.getOutputValue('blue')]
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))
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commands.append("fi")
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alg.commands.extend(commands)
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def processOutputs(alg):
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raster = alg.exportedLayers[alg.getParameterValue('input')]
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commands = ["if [ $(g.list type=rast pattern='{}.*' | wc -l) -eq \"0\" ]; then".format(raster)]
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for color in ['red', 'green', 'blue']:
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commands.append(" r.out.gdal -t input={} output={} createopt=\"TFW=YES,COMPRESS=LZW\" --overwrite".format(
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alg.exportedLayers[alg.getOutputValue(color)],
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alg.getOutputValue(color)
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))
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commands.append("else")
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for color in ['red', 'green', 'blue']:
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commands.append(" r.out.gdal -t input={} output={} createopt=\"TFW=YES,COMPRESS=LZW\" --overwrite".format(
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'{}.{}'.format(raster, color),
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alg.getOutputValue(color)
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))
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commands.append("fi")
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alg.commands.extend(commands)
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