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88 lines
3.4 KiB
Python
88 lines
3.4 KiB
Python
# -*- coding: utf-8 -*-
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"""
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***************************************************************************
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SplitRGBBands.py
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---------------------
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Date : August 2012
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Copyright : (C) 2012 by Victor Olaya
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Email : volayaf at gmail dot com
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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__ = 'Victor Olaya'
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__date__ = 'August 2012'
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__copyright__ = '(C) 2012, Victor Olaya'
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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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import os
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from PyQt4 import QtGui
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from processing.core.GeoAlgorithm import GeoAlgorithm
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from processing.core.parameters import ParameterRaster
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from processing.core.outputs import OutputRaster
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from processing.tools.system import getTempFilename, isWindows
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import SagaUtils
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class SplitRGBBands(GeoAlgorithm):
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INPUT = 'INPUT'
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R = 'R'
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G = 'G'
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B = 'B'
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def getIcon(self):
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return QtGui.QIcon(os.path.dirname(__file__) + '/../../images/saga.png')
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def defineCharacteristics(self):
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self.name = 'Split RGB bands'
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self.group = 'Grid - Tools'
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self.addParameter(ParameterRaster(SplitRGBBands.INPUT,
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self.tr('Input layer'), False))
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self.addOutput(OutputRaster(SplitRGBBands.R,
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self.tr('Output R band layer')))
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self.addOutput(OutputRaster(SplitRGBBands.G,
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self.tr('Output G band layer')))
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self.addOutput(OutputRaster(SplitRGBBands.B,
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self.tr('Output B band layer')))
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def processAlgorithm(self, progress):
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# TODO: check correct num of bands
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input = self.getParameterValue(SplitRGBBands.INPUT)
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temp = getTempFilename(None).replace('.', '')
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basename = os.path.basename(temp)
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validChars = \
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'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789'
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safeBasename = ''.join(c for c in basename if c in validChars)
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temp = os.path.join(os.path.dirname(temp), safeBasename)
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r = self.getOutputValue(SplitRGBBands.R)
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g = self.getOutputValue(SplitRGBBands.G)
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b = self.getOutputValue(SplitRGBBands.B)
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commands = []
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version = SagaUtils.getSagaInstalledVersion(True)
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trailing = "000" if version != "2.1.4" else ""
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lib = "" if isWindows() else "lib"
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commands.append('%sio_gdal 0 -GRIDS "%s" -FILES "%s"' % (lib, temp, input)
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+ '"')
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commands.append('%sio_gdal 1 -GRIDS "%s_%s1.sgrd" -FORMAT 1 -TYPE 0 -FILE "%s"' %(lib, temp, trailing, r)
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)
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commands.append('%sio_gdal 1 -GRIDS "%s_%s2.sgrd" -FORMAT 1 -TYPE 0 -FILE "%s"' %(lib, temp, trailing, g)
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)
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commands.append('%sio_gdal 1 -GRIDS "%s_%s3.sgrd" -FORMAT 1 -TYPE 0 -FILE "%s"' %(lib, temp, trailing, b)
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)
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SagaUtils.createSagaBatchJobFileFromSagaCommands(commands)
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SagaUtils.executeSaga(progress)
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