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84 lines
3.0 KiB
Python
84 lines
3.0 KiB
Python
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# -*- coding: utf-8 -*-
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"""
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***************************************************************************
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sieve.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, QtCore
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from processing.core.GeoAlgorithm import GeoAlgorithm
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from processing.parameters.ParameterRaster import ParameterRaster
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from processing.parameters.ParameterSelection import ParameterSelection
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from processing.parameters.ParameterNumber import ParameterNumber
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from processing.outputs.OutputRaster import OutputRaster
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from processing.tools.system import *
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from processing.gdal.GdalUtils import GdalUtils
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class sieve(GeoAlgorithm):
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INPUT = "INPUT"
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THRESHOLD = "THRESHOLD"
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CONNECTIONS = "CONNECTIONS"
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OUTPUT = "OUTPUT"
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PIXEL_CONNECTIONS = ["4", "8"]
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def getIcon(self):
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filepath = os.path.dirname(__file__) + "/icons/sieve.png"
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return QtGui.QIcon(filepath)
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def defineCharacteristics(self):
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self.name = "Sieve"
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self.group = "[GDAL] Analysis"
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self.addParameter(ParameterRaster(self.INPUT, "Input layer", False))
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self.addParameter(ParameterNumber(self.THRESHOLD, "Threshold", 0, 9999, 2))
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self.addParameter(ParameterSelection(self.CONNECTIONS, "Pixel connection", self.PIXEL_CONNECTIONS, 0))
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self.addOutput(OutputRaster(self.OUTPUT, "Output layer"))
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def processAlgorithm(self, progress):
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output = self.getOutputValue(self.OUTPUT)
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arguments = []
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arguments.append("-st")
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arguments.append(str(self.getParameterValue(self.THRESHOLD)))
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arguments.append("-" + self.PIXEL_CONNECTIONS[self.getParameterValue(self.CONNECTIONS)])
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arguments.append("-of")
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arguments.append(GdalUtils.getFormatShortNameFromFilename(output))
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arguments.append(self.getParameterValue(self.INPUT))
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arguments.append(output)
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commands = []
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if isWindows():
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commands = ["cmd.exe", "/C ", "gdal_sieve.bat", GdalUtils.escapeAndJoin(arguments)]
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else:
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commands = ["gdal_sieve.py", GdalUtils.escapeAndJoin(arguments)]
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GdalUtils.runGdal(commands, progress)
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