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41 lines
1.5 KiB
Python
41 lines
1.5 KiB
Python
from PyQt4 import QtGui
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from sextante.core.GeoAlgorithm import GeoAlgorithm
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from sextante.parameters.ParameterRaster import ParameterRaster
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from sextante.outputs.OutputRaster import OutputRaster
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import os
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from sextante.gdal.GdalUtils import GdalUtils
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from sextante.parameters.ParameterNumber import ParameterNumber
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from sextante.core.SextanteUtils import SextanteUtils
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class rgb2pct(GeoAlgorithm):
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INPUT = "INPUT"
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OUTPUT = "OUTPUT"
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NCOLORS = "NCOLORS"
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def getIcon(self):
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filepath = os.path.dirname(__file__) + "/icons/24-to-8-bits.png"
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return QtGui.QIcon(filepath)
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def defineCharacteristics(self):
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self.name = "rgb2pct"
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self.group = "Conversion"
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self.addParameter(ParameterRaster(rgb2pct.INPUT, "Input layer", False))
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self.addParameter(ParameterNumber(rgb2pct.NCOLORS, "Number of colors", 1, None, 2))
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self.addOutput(OutputRaster(rgb2pct.OUTPUT, "Output layer"))
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def processAlgorithm(self, progress):
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if SextanteUtils.isWindows():
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commands = ["cmd.exe", "/C ", "rgb2pct.bat"]
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else:
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commands = ["rgb2pct.py"]
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commands.append("-n")
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commands.append(str(self.getParameterValue(rgb2pct.NCOLORS)))
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commands.append("-of")
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out = self.getOutputValue(rgb2pct.OUTPUT)
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commands.append(GdalUtils.getFormatShortNameFromFilename(out))
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commands.append(self.getParameterValue(rgb2pct.INPUT))
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commands.append(out)
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GdalUtils.runGdal(commands, progress)
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