mirror of
https://github.com/qgis/QGIS.git
synced 2025-02-24 00:47:57 -05:00
97 lines
4.0 KiB
Python
97 lines
4.0 KiB
Python
# -*- coding: utf-8 -*-
|
|
|
|
"""
|
|
***************************************************************************
|
|
peukerdouglas.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 *
|
|
|
|
from processing.core.GeoAlgorithm import GeoAlgorithm
|
|
from processing.core.ProcessingLog import ProcessingLog
|
|
from processing.core.ProcessingUtils import ProcessingUtils
|
|
from processing.core.ProcessingConfig import ProcessingConfig
|
|
from processing.core.GeoAlgorithmExecutionException import GeoAlgorithmExecutionException
|
|
|
|
from processing.parameters.ParameterRaster import ParameterRaster
|
|
from processing.parameters.ParameterNumber import ParameterNumber
|
|
|
|
from processing.outputs.OutputRaster import OutputRaster
|
|
|
|
from processing.taudem.TauDEMUtils import TauDEMUtils
|
|
|
|
class PeukerDouglas(GeoAlgorithm):
|
|
ELEVATION_GRID = "ELEVATION_GRID"
|
|
CENTER_WEIGHT = "CENTER_WEIGHT"
|
|
SIDE_WEIGHT = "SIDE_WEIGHT"
|
|
DIAGONAL_WEIGHT = "DIAGONAL_WEIGHT"
|
|
|
|
STREAM_SOURCE_GRID = "STREAM_SOURCE_GRID"
|
|
|
|
def getIcon(self):
|
|
return QIcon(os.path.dirname(__file__) + "/../images/taudem.png")
|
|
|
|
def defineCharacteristics(self):
|
|
self.name = "Peuker Douglas"
|
|
self.cmdName = "peukerdouglas"
|
|
self.group = "Stream Network Analysis tools"
|
|
|
|
self.addParameter(ParameterRaster(self.ELEVATION_GRID, "Elevation Grid", False))
|
|
self.addParameter(ParameterNumber(self.CENTER_WEIGHT, "Center Smoothing Weight", 0, None, 0.4))
|
|
self.addParameter(ParameterNumber(self.SIDE_WEIGHT, "Side Smoothing Weight", 0, None, 0.1))
|
|
self.addParameter(ParameterNumber(self.DIAGONAL_WEIGHT, "Diagonal Smoothing Weight", 0, None, 0.05))
|
|
|
|
self.addOutput(OutputRaster(self.STREAM_SOURCE_GRID, "Stream Source 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("Wrong number of MPI processes used.\nPlease set correct number before running TauDEM algorithms.")
|
|
|
|
commands.append("-n")
|
|
commands.append(str(processNum))
|
|
commands.append(os.path.join(TauDEMUtils.taudemPath(), self.cmdName))
|
|
commands.append("-fel")
|
|
commands.append(self.getParameterValue(self.ELEVATION_GRID))
|
|
commands.append("-par")
|
|
commands.append(str(self.getParameterValue(self.CENTER_WEIGHT)))
|
|
commands.append(str(self.getParameterValue(self.SIDE_WEIGHT)))
|
|
commands.append(str(self.getParameterValue(self.DIAGONAL_WEIGHT)))
|
|
commands.append("-ss")
|
|
commands.append(self.getOutputValue(self.STREAM_SOURCE_GRID))
|
|
|
|
loglines = []
|
|
loglines.append("TauDEM execution command")
|
|
for line in commands:
|
|
loglines.append(line)
|
|
ProcessingLog.addToLog(ProcessingLog.LOG_INFO, loglines)
|
|
|
|
TauDEMUtils.executeTauDEM(commands, progress)
|
|
|
|
#def helpFile(self):
|
|
# return os.path.join(os.path.dirname(__file__), "help", self.cmdName + ".html")
|