mirror of
https://github.com/qgis/QGIS.git
synced 2025-02-27 00:33:48 -05:00
97 lines
3.8 KiB
Python
97 lines
3.8 KiB
Python
# -*- coding: utf-8 -*-
|
|
|
|
"""
|
|
***************************************************************************
|
|
slopearea.py
|
|
---------------------
|
|
Date : October 2012
|
|
Copyright : (C) 2012 by Alexander Bruy
|
|
Email : alexander dot bruy at gmail dot com
|
|
***************************************************************************
|
|
* *
|
|
* This program is free software; you can redistribute it and/or modify *
|
|
* it under the terms of the GNU General Public License as published by *
|
|
* the Free Software Foundation; either version 2 of the License, or *
|
|
* (at your option) any later version. *
|
|
* *
|
|
***************************************************************************
|
|
"""
|
|
|
|
__author__ = 'Alexander Bruy'
|
|
__date__ = 'October 2012'
|
|
__copyright__ = '(C) 2012, Alexander Bruy'
|
|
|
|
# This will get replaced with a git SHA1 when you do a git archive
|
|
|
|
__revision__ = '$Format:%H$'
|
|
|
|
import os
|
|
|
|
from PyQt4.QtGui import QIcon
|
|
|
|
from processing.core.GeoAlgorithm import GeoAlgorithm
|
|
from processing.core.ProcessingConfig import ProcessingConfig
|
|
from processing.core.GeoAlgorithmExecutionException import \
|
|
GeoAlgorithmExecutionException
|
|
|
|
from processing.core.parameters import ParameterRaster
|
|
from processing.core.parameters import ParameterNumber
|
|
from processing.core.outputs import OutputRaster
|
|
|
|
from TauDEMUtils import TauDEMUtils
|
|
|
|
|
|
class SlopeArea(GeoAlgorithm):
|
|
|
|
SLOPE_GRID = 'SLOPE_GRID'
|
|
AREA_GRID = 'AREA_GRID'
|
|
SLOPE_EXPONENT = 'SLOPE_EXPONENT'
|
|
AREA_EXPONENT = 'AREA_EXPONENT'
|
|
|
|
SLOPE_AREA_GRID = 'SLOPE_AREA_GRID'
|
|
|
|
def getIcon(self):
|
|
return QIcon(os.path.dirname(__file__) + '/../../images/taudem.png')
|
|
|
|
def defineCharacteristics(self):
|
|
self.name, self.i18n_name = self.trAlgorithm('Slope Area Combination')
|
|
self.cmdName = 'slopearea'
|
|
self.group, self.i18n_group = self.trAlgorithm('Stream Network Analysis tools')
|
|
|
|
self.addParameter(ParameterRaster(self.SLOPE_GRID,
|
|
self.tr('Slope Grid'), False))
|
|
self.addParameter(ParameterRaster(self.AREA_GRID,
|
|
self.tr('Contributing Area Grid'), False))
|
|
self.addParameter(ParameterNumber(self.SLOPE_EXPONENT,
|
|
self.tr('Slope Exponent'), 0, None, 2))
|
|
self.addParameter(ParameterNumber(self.AREA_EXPONENT,
|
|
self.tr('Area Exponent'), 0, None, 1))
|
|
|
|
self.addOutput(OutputRaster(self.SLOPE_AREA_GRID,
|
|
self.tr('Slope Area Grid')))
|
|
|
|
def processAlgorithm(self, progress):
|
|
commands = []
|
|
commands.append(os.path.join(TauDEMUtils.mpiexecPath(), 'mpiexec'))
|
|
|
|
processNum = ProcessingConfig.getSetting(TauDEMUtils.MPI_PROCESSES)
|
|
if processNum <= 0:
|
|
raise GeoAlgorithmExecutionException(
|
|
self.tr('Wrong number of MPI processes used. Please set '
|
|
'correct number before running TauDEM algorithms.'))
|
|
|
|
commands.append('-n')
|
|
commands.append(unicode(processNum))
|
|
commands.append(os.path.join(TauDEMUtils.taudemPath(), self.cmdName))
|
|
commands.append('-slp')
|
|
commands.append(self.getParameterValue(self.SLOPE_GRID))
|
|
commands.append('-sca')
|
|
commands.append(self.getParameterValue(self.AREA_GRID))
|
|
commands.append('-par')
|
|
commands.append(unicode(self.getParameterValue(self.SLOPE_EXPONENT)))
|
|
commands.append(unicode(self.getParameterValue(self.AREA_EXPONENT)))
|
|
commands.append('-sa')
|
|
commands.append(self.getOutputValue(self.SLOPE_AREA_GRID))
|
|
|
|
TauDEMUtils.executeTauDEM(commands, progress)
|