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75 lines
2.8 KiB
Python
75 lines
2.8 KiB
Python
# -*- 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)
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