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106 lines
3.9 KiB
Python
106 lines
3.9 KiB
Python
# -*- coding: utf-8 -*-
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"""
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***************************************************************************
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slope.py
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---------------------
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Date : October 2013
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Copyright : (C) 2013 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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from builtins import str
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__author__ = 'Alexander Bruy'
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__date__ = 'October 2013'
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__copyright__ = '(C) 2013, 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 processing.algs.gdal.GdalAlgorithm import GdalAlgorithm
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from processing.core.parameters import ParameterRaster
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from processing.core.parameters import ParameterBoolean
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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 processing.algs.gdal.GdalUtils import GdalUtils
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pluginPath = os.path.split(os.path.split(os.path.dirname(__file__))[0])[0]
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class slope(GdalAlgorithm):
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INPUT = 'INPUT'
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BAND = 'BAND'
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COMPUTE_EDGES = 'COMPUTE_EDGES'
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ZEVENBERGEN = 'ZEVENBERGEN'
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AS_PERCENT = 'AS_PERCENT'
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SCALE = 'SCALE'
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OUTPUT = 'OUTPUT'
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def group(self):
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return self.tr('Raster analysis')
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def __init__(self):
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super().__init__()
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def initAlgorithm(self, config=None):
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self.addParameter(ParameterRaster(self.INPUT, self.tr('Input layer')))
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self.addParameter(ParameterNumber(self.BAND,
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self.tr('Band number'), 1, 99, 1))
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self.addParameter(ParameterBoolean(self.COMPUTE_EDGES,
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self.tr('Compute edges'), False))
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self.addParameter(ParameterBoolean(self.ZEVENBERGEN,
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self.tr("Use Zevenbergen&Thorne formula (instead of the Horn's one)"),
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False))
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self.addParameter(ParameterBoolean(self.AS_PERCENT,
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self.tr('Slope expressed as percent (instead of degrees)'), False))
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self.addParameter(ParameterNumber(self.SCALE,
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self.tr('Scale (ratio of vert. units to horiz.)'),
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0.0, 99999999.999999, 1.0))
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self.addOutput(OutputRaster(self.OUTPUT, self.tr('Slope')))
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def name(self):
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return 'slope'
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def displayName(self):
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return self.tr('Slope')
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def getConsoleCommands(self, parameters, context, feedback):
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arguments = ['slope']
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arguments.append(str(self.getParameterValue(self.INPUT)))
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output = str(self.getOutputValue(self.OUTPUT))
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arguments.append(output)
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arguments.append('-of')
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arguments.append(GdalUtils.getFormatShortNameFromFilename(output))
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arguments.append('-b')
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arguments.append(str(self.getParameterValue(self.BAND)))
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arguments.append('-s')
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arguments.append(str(self.getParameterValue(self.SCALE)))
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if self.getParameterValue(self.COMPUTE_EDGES):
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arguments.append('-compute_edges')
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if self.getParameterValue(self.ZEVENBERGEN):
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arguments.append('-alg')
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arguments.append('ZevenbergenThorne')
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if self.getParameterValue(self.AS_PERCENT):
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arguments.append('-p')
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return ['gdaldem', GdalUtils.escapeAndJoin(arguments)]
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