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123 lines
5.0 KiB
Python
123 lines
5.0 KiB
Python
# -*- coding: utf-8 -*-
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"""
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***************************************************************************
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rasterize_over_fixed_value.py
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---------------------
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Date : September 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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__author__ = 'Alexander Bruy'
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__date__ = 'September 2013'
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__copyright__ = '(C) 2013, Alexander Bruy'
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import os
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from qgis.PyQt.QtGui import QIcon
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from qgis.core import (QgsRasterFileWriter,
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QgsProcessingException,
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QgsProcessingParameterDefinition,
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QgsProcessingParameterFeatureSource,
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QgsProcessingParameterField,
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QgsProcessingParameterRasterLayer,
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QgsProcessingParameterNumber,
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QgsProcessingParameterString,
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QgsProcessingParameterBoolean,
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QgsProcessingOutputRasterLayer)
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from processing.algs.gdal.GdalAlgorithm import GdalAlgorithm
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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 rasterize_over_fixed_value(GdalAlgorithm):
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INPUT = 'INPUT'
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INPUT_RASTER = 'INPUT_RASTER'
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ADD = 'ADD'
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EXTRA = 'EXTRA'
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BURN = 'BURN'
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OUTPUT = 'OUTPUT'
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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(QgsProcessingParameterFeatureSource(self.INPUT,
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self.tr('Input vector layer')))
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self.addParameter(QgsProcessingParameterRasterLayer(self.INPUT_RASTER,
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self.tr('Input raster layer')))
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self.addParameter(QgsProcessingParameterNumber(self.BURN,
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self.tr('A fixed value to burn'),
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type=QgsProcessingParameterNumber.Double,
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defaultValue=0.0))
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params = []
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params.append(QgsProcessingParameterBoolean(self.ADD,
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self.tr('Add burn in values to existing raster values'),
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defaultValue=False))
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params.append(QgsProcessingParameterString(self.EXTRA,
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self.tr('Additional command-line parameters'),
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defaultValue=None,
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optional=True))
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for p in params:
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p.setFlags(p.flags() | QgsProcessingParameterDefinition.FlagAdvanced)
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self.addParameter(p)
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self.addOutput(QgsProcessingOutputRasterLayer(self.OUTPUT,
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self.tr('Rasterized')))
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def name(self):
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return 'rasterize_over_fixed_value'
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def displayName(self):
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return self.tr('Rasterize (overwrite with fixed value)')
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def group(self):
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return self.tr('Vector conversion')
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def groupId(self):
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return 'vectorconversion'
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def icon(self):
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return QIcon(os.path.join(pluginPath, 'images', 'gdaltools', 'rasterize.png'))
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def commandName(self):
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return 'gdal_rasterize'
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def getConsoleCommands(self, parameters, context, feedback, executing=True):
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ogrLayer, layerName = self.getOgrCompatibleSource(self.INPUT, parameters, context, feedback, executing)
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inLayer = self.parameterAsRasterLayer(parameters, self.INPUT_RASTER, context)
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if inLayer is None:
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raise QgsProcessingException(self.invalidRasterError(parameters, self.INPUT_RASTER))
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self.setOutputValue(self.OUTPUT, inLayer.source())
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arguments = ['-l']
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arguments.append(layerName)
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arguments.append('-burn')
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arguments.append(str(self.parameterAsDouble(parameters, self.BURN, context)))
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if self.parameterAsBool(parameters, self.ADD, context):
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arguments.append('-add')
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if self.EXTRA in parameters and parameters[self.EXTRA] not in (None, ''):
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extra = self.parameterAsString(parameters, self.EXTRA, context)
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arguments.append(extra)
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arguments.append(ogrLayer)
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arguments.append(inLayer.source())
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return [self.commandName(), GdalUtils.escapeAndJoin(arguments)]
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