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97 lines
3.9 KiB
Python
97 lines
3.9 KiB
Python
# -*- coding: utf-8 -*-
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"""
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***************************************************************************
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peukerdouglas.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 sextante.core.GeoAlgorithm import GeoAlgorithm
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from sextante.core.SextanteLog import SextanteLog
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from sextante.core.SextanteUtils import SextanteUtils
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from sextante.core.SextanteConfig import SextanteConfig
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from sextante.core.GeoAlgorithmExecutionException import GeoAlgorithmExecutionException
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from sextante.parameters.ParameterRaster import ParameterRaster
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from sextante.parameters.ParameterNumber import ParameterNumber
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from sextante.outputs.OutputRaster import OutputRaster
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from sextante.taudem.TauDEMUtils import TauDEMUtils
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class PeukerDouglas(GeoAlgorithm):
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ELEVATION_GRID = "ELEVATION_GRID"
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CENTER_WEIGHT = "CENTER_WEIGHT"
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SIDE_WEIGHT = "SIDE_WEIGHT"
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DIAGONAL_WEIGHT = "DIAGONAL_WEIGHT"
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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 = "Peuker Douglas"
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self.cmdName = "peukerdouglas"
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self.group = "Stream Network Analysis tools"
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self.addParameter(ParameterRaster(self.ELEVATION_GRID, "Elevation Grid", False))
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self.addParameter(ParameterNumber(self.CENTER_WEIGHT, "Center Smoothing Weight", 0, None, 0.4))
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self.addParameter(ParameterNumber(self.SIDE_WEIGHT, "Side Smoothing Weight", 0, None, 0.1))
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self.addParameter(ParameterNumber(self.DIAGONAL_WEIGHT, "Diagonal Smoothing Weight", 0, None, 0.05))
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self.addOutput(OutputRaster(self.STREAM_SOURCE_GRID, "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 = SextanteConfig.getSetting(TauDEMUtils.MPI_PROCESSES)
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if processNum <= 0:
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raise GeoAlgorithmExecutionException("Wrong number of MPI processes used.\nPlease set correct number before running 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("-fel")
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commands.append(self.getParameterValue(self.ELEVATION_GRID))
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commands.append("-par")
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commands.append(str(self.getParameterValue(self.CENTER_WEIGHT)))
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commands.append(str(self.getParameterValue(self.SIDE_WEIGHT)))
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commands.append(str(self.getParameterValue(self.DIAGONAL_WEIGHT)))
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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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SextanteLog.addToLog(SextanteLog.LOG_INFO, loglines)
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TauDEMUtils.executeTauDEM(commands, progress)
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def helpFile(self):
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return os.path.join(os.path.dirname(__file__), "help", self.cmdName + ".html")
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