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8cad2a6e16
Remove a bunch of manual "max" values for numeric parameters where the maximum just represents a 'large number' and not a real constraint, and let the default parameter max value handling kick in instead. In the case of random selection the max value exceeded the possible range for integers in spin boxes and broke the widget. Fixes #20015
86 lines
3.1 KiB
Python
86 lines
3.1 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 2016
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Copyright : (C) 2016 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 2016'
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__copyright__ = '(C) 2016, 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 qgis.PyQt.QtGui import QIcon
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from qgis.analysis import QgsSlopeFilter
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from qgis.core import (QgsRasterFileWriter,
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QgsProcessingParameterRasterLayer,
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QgsProcessingParameterNumber,
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QgsProcessingParameterRasterDestination)
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from processing.algs.qgis.QgisAlgorithm import QgisAlgorithm
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pluginPath = os.path.split(os.path.split(os.path.dirname(__file__))[0])[0]
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class Slope(QgisAlgorithm):
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INPUT = 'INPUT'
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Z_FACTOR = 'Z_FACTOR'
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OUTPUT = 'OUTPUT'
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def icon(self):
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return QIcon(os.path.join(pluginPath, 'images', 'dem.png'))
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def group(self):
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return self.tr('Raster terrain analysis')
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def groupId(self):
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return 'rasterterrainanalysis'
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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(QgsProcessingParameterRasterLayer(self.INPUT,
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self.tr('Elevation layer')))
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self.addParameter(QgsProcessingParameterNumber(self.Z_FACTOR,
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self.tr('Z factor'), QgsProcessingParameterNumber.Double,
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1, False, 0.00))
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self.addParameter(QgsProcessingParameterRasterDestination(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 processAlgorithm(self, parameters, context, feedback):
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inputFile = self.parameterAsRasterLayer(parameters, self.INPUT, context).source()
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zFactor = self.parameterAsDouble(parameters, self.Z_FACTOR, context)
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outputFile = self.parameterAsOutputLayer(parameters, self.OUTPUT, context)
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outputFormat = QgsRasterFileWriter.driverForExtension(os.path.splitext(outputFile)[1])
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slope = QgsSlopeFilter(inputFile, outputFile, outputFormat)
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slope.setZFactor(zFactor)
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slope.processRaster(feedback)
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return {self.OUTPUT: outputFile}
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