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41 lines
1.6 KiB
Python
41 lines
1.6 KiB
Python
from PyQt4 import QtGui, QtCore
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from sextante.core.GeoAlgorithm import GeoAlgorithm
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from sextante.parameters.ParameterRaster import ParameterRaster
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import os
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from sextante.gdal.GdalUtils import GdalUtils
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from sextante.parameters.ParameterString import ParameterString
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from sextante.outputs.OutputVector import OutputVector
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from sextante.core.SextanteUtils import SextanteUtils
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class polygonize(GeoAlgorithm):
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INPUT = "INPUT"
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OUTPUT = "OUTPUT"
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FIELD = "FIELD"
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def getIcon(self):
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filepath = os.path.dirname(__file__) + "/icons/polygonize.png"
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return QtGui.QIcon(filepath)
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def defineCharacteristics(self):
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self.name = "polygonize"
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self.group = "Conversion"
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self.addParameter(ParameterRaster(polygonize.INPUT, "Input layer", False))
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self.addParameter(ParameterString(polygonize.FIELD, "Output field name", "DN"))
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self.addOutput(OutputVector(polygonize.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 ", "gdal_polygonize.bat"]
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else:
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commands = ["gdal_polygonize.py"]
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commands.append(self.getParameterValue(polygonize.INPUT))
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commands.append('-f')
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commands.append('"ESRI Shapefile"')
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output = self.getOutputValue(polygonize.OUTPUT)
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commands.append(output)
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commands.append(QtCore.QFileInfo(output).baseName())
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commands.append(self.getParameterValue(polygonize.FIELD))
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GdalUtils.runGdal(commands, progress)
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