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106 lines
4.0 KiB
Python
106 lines
4.0 KiB
Python
# -*- coding: utf-8 -*-
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"""
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***************************************************************************
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lengtharea.py
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---------------------
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Date : October 2012
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Copyright : (C) 2012 by Alexander Bruy
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Email : alexander dot bruy 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__ = 'Alexander Bruy'
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__date__ = 'October 2012'
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__copyright__ = '(C) 2012, Alexander Bruy'
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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.QtGui import *
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from processing.core.GeoAlgorithm import GeoAlgorithm
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from processing.core.ProcessingLog import ProcessingLog
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from processing.core.ProcessingConfig import ProcessingConfig
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from processing.core.GeoAlgorithmExecutionException import \
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GeoAlgorithmExecutionException
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from processing.parameters.ParameterRaster import ParameterRaster
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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 TauDEMUtils import TauDEMUtils
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class LengthArea(GeoAlgorithm):
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LENGTH_GRID = 'LENGTH_GRID'
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CONTRIB_AREA_GRID = 'CONTRIB_AREA_GRID'
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THRESHOLD = 'THRESHOLD'
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EXPONENT = 'EXPONENT'
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STREAM_SOURCE_GRID = 'STREAM_SOURCE_GRID'
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def getIcon(self):
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return QIcon(os.path.dirname(__file__) + '/../images/taudem.png')
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def defineCharacteristics(self):
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self.name = 'Length Area Stream Source'
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self.cmdName = 'lengtharea'
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self.group = 'Stream Network Analysis tools'
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self.addParameter(ParameterRaster(self.LENGTH_GRID, 'Length Grid',
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False))
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self.addParameter(ParameterRaster(self.CONTRIB_AREA_GRID,
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'Contributing Area Grid', False))
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self.addParameter(ParameterNumber(self.THRESHOLD, 'Threshold', 0,
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None, 0.03))
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self.addParameter(ParameterNumber(self.EXPONENT, 'Exponent', 0, None,
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1.3))
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self.addOutput(OutputRaster(self.STREAM_SOURCE_GRID,
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'Stream Source Grid'))
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def processAlgorithm(self, progress):
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commands = []
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commands.append(os.path.join(TauDEMUtils.mpiexecPath(), 'mpiexec'))
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processNum = ProcessingConfig.getSetting(TauDEMUtils.MPI_PROCESSES)
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if processNum <= 0:
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raise GeoAlgorithmExecutionException('Wrong number of MPI \
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processes used.\nPlease set correct number before running \
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TauDEM algorithms.')
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commands.append('-n')
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commands.append(str(processNum))
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commands.append(os.path.join(TauDEMUtils.taudemPath(), self.cmdName))
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commands.append('-plen')
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commands.append(self.getParameterValue(self.LENGTH_GRID))
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commands.append('-ad8')
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commands.append(self.getParameterValue(self.CONTRIB_AREA_GRID))
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commands.append('-par')
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commands.append(str(self.getParameterValue(self.THRESHOLD)))
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commands.append(str(self.getParameterValue(self.EXPONENT)))
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commands.append('-ss')
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commands.append(self.getOutputValue(self.STREAM_SOURCE_GRID))
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loglines = []
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loglines.append('TauDEM execution command')
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for line in commands:
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loglines.append(line)
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ProcessingLog.addToLog(ProcessingLog.LOG_INFO, loglines)
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TauDEMUtils.executeTauDEM(commands, progress)
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