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92 lines
3.1 KiB
Python
92 lines
3.1 KiB
Python
# -*- 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,
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9999, 2))
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self.addParameter(ParameterSelection(self.CONNECTIONS,
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'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('-' +
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self.PIXEL_CONNECTIONS[self.getParameterValue(
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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',
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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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