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140 lines
5.6 KiB
Python
140 lines
5.6 KiB
Python
# -*- coding: utf-8 -*-
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"""
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***************************************************************************
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pansharp.py
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---------------------
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Date : March 2019
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Copyright : (C) 2019 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__ = 'March 2019'
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__copyright__ = '(C) 2019, 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.core import (QgsRasterFileWriter,
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QgsProcessingException,
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QgsProcessingParameterDefinition,
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QgsProcessingParameterRasterLayer,
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QgsProcessingParameterEnum,
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QgsProcessingParameterString,
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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 pansharp(GdalAlgorithm):
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SPECTRAL = 'SPECTRAL'
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PANCHROMATIC = 'PANCHROMATIC'
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RESAMPLING = 'RESAMPLING'
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OPTIONS = 'OPTIONS'
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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.methods = ((self.tr('Nearest neighbour'), 'nearest'),
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(self.tr('Bilinear'), 'bilinear'),
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(self.tr('Cubic'), 'cubic'),
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(self.tr('Cubic spline'), 'cubicspline'),
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(self.tr('Lanczos windowed sinc'), 'lanczos'),
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(self.tr('Average'), 'average'))
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self.addParameter(QgsProcessingParameterRasterLayer(self.SPECTRAL,
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self.tr('Spectral dataset')))
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self.addParameter(QgsProcessingParameterRasterLayer(self.PANCHROMATIC,
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self.tr('Panchromatic dataset')))
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resampling_param = QgsProcessingParameterEnum(self.RESAMPLING,
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self.tr('Resampling algorithm'),
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options=[i[0] for i in self.methods],
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defaultValue=2)
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resampling_param.setFlags(resampling_param.flags() | QgsProcessingParameterDefinition.FlagAdvanced)
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self.addParameter(resampling_param)
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options_param = QgsProcessingParameterString(self.OPTIONS,
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self.tr('Additional creation options'),
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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(QgsProcessingParameterRasterDestination(self.OUTPUT,
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self.tr('Output')))
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def name(self):
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return 'pansharp'
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def displayName(self):
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return self.tr('Pansharpening')
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def group(self):
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return self.tr('Raster miscellaneous')
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def groupId(self):
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return 'rastermiscellaneous'
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def commandName(self):
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return 'gdal_pansharpen'
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def getConsoleCommands(self, parameters, context, feedback, executing=True):
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spectral = self.parameterAsRasterLayer(parameters, self.SPECTRAL, context)
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if spectral is None:
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raise QgsProcessingException(self.invalidRasterError(parameters, self.SPECTRAL))
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panchromatic = self.parameterAsRasterLayer(parameters, self.PANCHROMATIC, context)
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if panchromatic is None:
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raise QgsProcessingException(self.invalidRasterError(parameters, self.PANCHROMATIC))
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out = self.parameterAsOutputLayer(parameters, self.OUTPUT, context)
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self.setOutputValue(self.OUTPUT, out)
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arguments = []
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arguments.append(panchromatic.source())
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arguments.append(spectral.source())
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arguments.append(out)
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arguments.append('-r')
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arguments.append(self.methods[self.parameterAsEnum(parameters, self.RESAMPLING, context)][1])
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arguments.append('-of')
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arguments.append(QgsRasterFileWriter.driverForExtension(os.path.splitext(out)[1]))
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options = self.parameterAsString(parameters, self.OPTIONS, context)
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if options:
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arguments.extend(GdalUtils.parseCreationOptions(options))
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if isWindows():
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commands = ['python3', '-m', self.commandName()]
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else:
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commands = [self.commandName() + '.py']
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commands.append(GdalUtils.escapeAndJoin(arguments))
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return commands
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