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# -*- coding: utf-8 -*-
"""
***************************************************************************
gridnet_multi.py
---------------------
Date : March 2015
Copyright : (C) 2015 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__ = 'March 2015'
__copyright__ = '(C) 2015, Alexander Bruy'
# This will get replaced with a git SHA1 when you do a git archive
__revision__ = '$Format:%H$'
import os
from qgis.PyQt.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 ParameterFile
from processing.core.parameters import ParameterVector
from processing.core.parameters import ParameterNumber
from processing.core.outputs import OutputDirectory
from .TauDEMUtils import TauDEMUtils
class GridNetMulti(GeoAlgorithm):
D8_FLOW_DIR_GRID = 'D8_FLOW_DIR_GRID'
OUTLETS_SHAPE = 'OUTLETS_SHAPE'
MASK_GRID = 'MASK_GRID'
THRESHOLD = 'THRESHOLD'
LONGEST_LEN_GRID = 'LONGEST_LEN_GRID'
TOTAL_LEN_GRID = 'TOTAL_LEN_GRID'
STRAHLER_GRID = 'STRAHLER_GRID'
def getIcon(self):
return QIcon(os.path.dirname(__file__) + '/../../images/taudem.svg')
def defineCharacteristics(self):
self.name, self.i18n_name = self.trAlgorithm('Grid Network (multifile)')
self.cmdName = 'gridnet'
self.group, self.i18n_group = self.trAlgorithm('Basic Grid Analysis tools')
self.addParameter(ParameterFile(self.D8_FLOW_DIR_GRID,
self.tr('D8 Flow Direction Grid'), True, False))
self.addParameter(ParameterVector(self.OUTLETS_SHAPE,
self.tr('Outlets Shapefile'),
[ParameterVector.VECTOR_TYPE_POINT], True))
self.addParameter(ParameterFile(self.MASK_GRID,
self.tr('Mask Grid'), True, True))
self.addParameter(ParameterNumber(self.THRESHOLD,
self.tr('Mask Threshold'), 0, None, 100))
self.addOutput(OutputDirectory(self.LONGEST_LEN_GRID,
self.tr('Longest Upslope Length Grid')))
self.addOutput(OutputDirectory(self.TOTAL_LEN_GRID,
self.tr('Total Upslope Length Grid')))
self.addOutput(OutputDirectory(self.STRAHLER_GRID,
self.tr('Strahler Network Order 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.taudemMultifilePath(), self.cmdName))
commands.append('-p')
commands.append(self.getParameterValue(self.D8_FLOW_DIR_GRID))
param = self.getParameterValue(self.OUTLETS_SHAPE)
if param is not None:
commands.append('-o')
commands.append(param)
param = self.getParameterValue(self.MASK_GRID)
if param is not None:
commands.append('-mask')
commands.append(param)
commands.append('-thresh')
commands.append(self.getParameterValue(self.THRESHOLD))
commands.append('-plen')
commands.append(self.getOutputValue(self.LONGEST_LEN_GRID))
commands.append('-tlen')
commands.append(self.getOutputValue(self.TOTAL_LEN_GRID))
commands.append('-gord')
commands.append(self.getOutputValue(self.STRAHLER_GRID))
TauDEMUtils.executeTauDEM(commands, progress)
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