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0f226645fa
-consistent parameters naming -use additional creation options where possible -remove duplicated functionality
185 lines
8.2 KiB
Python
185 lines
8.2 KiB
Python
# -*- coding: utf-8 -*-
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"""
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***************************************************************************
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proximity.py
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---------------------
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Date : August 2012
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Copyright : (C) 2012 by Victor Olaya
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Email : volayaf 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__ = 'Victor Olaya'
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__date__ = 'August 2012'
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__copyright__ = '(C) 2012, Victor Olaya'
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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.core import (QgsRasterFileWriter,
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QgsProcessingParameterDefinition,
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QgsProcessingParameterRasterLayer,
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QgsProcessingParameterBand,
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QgsProcessingParameterEnum,
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QgsProcessingParameterString,
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QgsProcessingParameterNumber,
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QgsProcessingParameterRasterDestination)
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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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from processing.tools.system import isWindows
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pluginPath = os.path.split(os.path.split(os.path.dirname(__file__))[0])[0]
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class proximity(GdalAlgorithm):
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INPUT = 'INPUT'
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BAND = 'BAND'
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VALUES = 'VALUES'
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MAX_DISTANCE = 'MAX_DISTANCE'
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REPLACE = 'REPLACE'
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UNITS = 'UNITS'
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NODATA = 'NODATA'
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OPTIONS = 'OPTIONS'
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DATA_TYPE = 'DATA_TYPE'
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OUTPUT = 'OUTPUT'
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TYPES = ['Byte', 'Int16', 'UInt16', 'UInt32', 'Int32', 'Float32', 'Float64', 'CInt16', 'CInt32', 'CFloat32', 'CFloat64']
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def icon(self):
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return QIcon(os.path.join(pluginPath, 'images', 'gdaltools', 'proximity.png'))
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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.distanceUnits = ((self.tr('Georeferenced coordinates'), 'GEO'),
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(self.tr('Pixel coordinates'), 'PIXEL'))
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self.addParameter(QgsProcessingParameterRasterLayer(self.INPUT,
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self.tr('Input layer')))
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self.addParameter(QgsProcessingParameterBand(self.BAND,
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self.tr('Band number'),
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parentLayerParameterName=self.INPUT))
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self.addParameter(QgsProcessingParameterString(self.VALUES,
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self.tr('A list of pixel values in the source image to be considered target pixels'),
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optional=True))
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self.addParameter(QgsProcessingParameterEnum(self.UNITS,
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self.tr('Distance units'),
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options=[i[0] for i in self.distanceUnits],
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allowMultiple=False,
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defaultValue=1))
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self.addParameter(QgsProcessingParameterNumber(self.MAX_DISTANCE,
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self.tr('The maximum distance to be generated'),
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type=QgsProcessingParameterNumber.Double,
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minValue=0.0,
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defaultValue=0.0,
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optional=True))
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self.addParameter(QgsProcessingParameterNumber(self.REPLACE,
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self.tr('Value to be applied to all pixels that are within the -maxdist of target pixels'),
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type=QgsProcessingParameterNumber.Double,
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defaultValue=0.0,
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optional=True))
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self.addParameter(QgsProcessingParameterNumber(self.NODATA,
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self.tr('Nodata value to use for the destination proximity raster'),
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type=QgsProcessingParameterNumber.Double,
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defaultValue=0.0,
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optional=True))
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options_param = QgsProcessingParameterString(self.OPTIONS,
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self.tr('Additional creation parameters'),
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defaultValue='',
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optional=True)
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options_param.setFlags(options_param.flags() | QgsProcessingParameterDefinition.FlagAdvanced)
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options_param.setMetadata({
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'widget_wrapper': {
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'class': 'processing.algs.gdal.ui.RasterOptionsWidget.RasterOptionsWidgetWrapper'}})
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self.addParameter(options_param)
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self.addParameter(QgsProcessingParameterEnum(self.DATA_TYPE,
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self.tr('Output data type'),
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self.TYPES,
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allowMultiple=False,
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defaultValue=5))
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self.addParameter(QgsProcessingParameterRasterDestination(self.OUTPUT,
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self.tr('Proximity map')))
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def name(self):
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return 'proximity'
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def displayName(self):
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return self.tr('Proximity (raster distance)')
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def group(self):
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return self.tr('Raster analysis')
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def getConsoleCommands(self, parameters, context, feedback):
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inLayer = self.parameterAsRasterLayer(parameters, self.INPUT, context)
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distance = self.parameterAsDouble(parameters, self.MAX_DISTANCE, context)
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replaceValue = self.parameterAsDouble(parameters, self.REPLACE, context)
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nodata = self.parameterAsDouble(parameters, self.NODATA, context)
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options = self.parameterAsString(parameters, self.OPTIONS, context)
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out = self.parameterAsOutputLayer(parameters, self.OUTPUT, context)
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arguments = []
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arguments.append('-srcband')
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arguments.append(str(self.parameterAsInt(parameters, self.BAND, context)))
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arguments.append('-distunits')
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arguments.append(self.distanceUnits[self.parameterAsEnum(parameters, self.UNITS, context)][1])
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values = self.parameterAsString(parameters, self.VALUES, context)
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if values:
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arguments.append('-values')
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arguments.append(values)
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if distance:
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arguments.append('-maxdist')
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arguments.append(str(distance))
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if nodata:
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arguments.append('-nodata')
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arguments.append(str(nodata))
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if replaceValue:
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arguments.append('-fixed-buf-val')
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arguments.append(str(replaceValue))
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arguments.append('-ot')
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arguments.append(self.TYPES[self.parameterAsEnum(parameters, self.DATA_TYPE, context)])
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arguments.append('-of')
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arguments.append(QgsRasterFileWriter.driverForExtension(os.path.splitext(out)[1]))
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if options:
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arguments.append('-co')
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arguments.append(options)
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arguments.append(inLayer.source())
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arguments.append(out)
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commands = []
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if isWindows():
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commands = ['cmd.exe', '/C ', 'gdal_proximity.bat',
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GdalUtils.escapeAndJoin(arguments)]
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else:
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commands = ['gdal_proximity.py',
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GdalUtils.escapeAndJoin(arguments)]
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return commands
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