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115 lines
4.4 KiB
Python
115 lines
4.4 KiB
Python
# -*- coding: utf-8 -*-
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"""
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***************************************************************************
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gridnet.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 QIcon
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from processing.core.GeoAlgorithm import GeoAlgorithm
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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.core.parameters import ParameterRaster
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from processing.core.parameters import ParameterVector
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from processing.core.parameters import ParameterNumber
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from processing.core.outputs import OutputRaster
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from TauDEMUtils import TauDEMUtils
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class GridNet(GeoAlgorithm):
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D8_FLOW_DIR_GRID = 'D8_FLOW_DIR_GRID'
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OUTLETS_SHAPE = 'OUTLETS_SHAPE'
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MASK_GRID = 'MASK_GRID'
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THRESHOLD = 'THRESHOLD'
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LONGEST_LEN_GRID = 'LONGEST_LEN_GRID'
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TOTAL_LEN_GRID = 'TOTAL_LEN_GRID'
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STRAHLER_GRID = 'STRAHLER_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, self.i18n_name = self.trAlgorithm('Grid Network')
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self.cmdName = 'gridnet'
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self.group, self.i18n_group = self.trAlgorithm('Basic Grid Analysis tools')
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self.addParameter(ParameterRaster(self.D8_FLOW_DIR_GRID,
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self.tr('D8 Flow Direction Grid'), False))
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self.addParameter(ParameterVector(self.OUTLETS_SHAPE,
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self.tr('Outlets Shapefile'),
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[ParameterVector.VECTOR_TYPE_POINT], True))
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self.addParameter(ParameterRaster(self.MASK_GRID,
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self.tr('Mask Grid'), True))
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self.addParameter(ParameterNumber(self.THRESHOLD,
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self.tr('Mask Threshold'), 0, None, 100))
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self.addOutput(OutputRaster(self.LONGEST_LEN_GRID,
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self.tr('Longest Upslope Length Grid')))
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self.addOutput(OutputRaster(self.TOTAL_LEN_GRID,
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self.tr('Total Upslope Length Grid')))
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self.addOutput(OutputRaster(self.STRAHLER_GRID,
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self.tr('Strahler Network Order 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(
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self.tr('Wrong number of MPI processes used. Please set '
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'correct number before running TauDEM algorithms.'))
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commands.append('-n')
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commands.append(unicode(processNum))
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commands.append(os.path.join(TauDEMUtils.taudemPath(), self.cmdName))
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commands.append('-p')
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commands.append(self.getParameterValue(self.D8_FLOW_DIR_GRID))
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param = self.getParameterValue(self.OUTLETS_SHAPE)
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if param is not None:
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commands.append('-o')
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commands.append(param)
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param = self.getParameterValue(self.MASK_GRID)
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if param is not None:
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commands.append('-mask')
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commands.append(param)
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commands.append('-thresh')
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commands.append(self.getParameterValue(self.THRESHOLD))
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commands.append('-plen')
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commands.append(self.getOutputValue(self.LONGEST_LEN_GRID))
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commands.append('-tlen')
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commands.append(self.getOutputValue(self.TOTAL_LEN_GRID))
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commands.append('-gord')
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commands.append(self.getOutputValue(self.STRAHLER_GRID))
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TauDEMUtils.executeTauDEM(commands, progress)
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