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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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merge.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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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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QgsProcessing,
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QgsProcessingParameterDefinition,
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QgsProcessingParameterMultipleLayers,
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QgsProcessingParameterEnum,
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QgsProcessingParameterString,
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QgsProcessingParameterBoolean,
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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 merge(GdalAlgorithm):
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INPUT = 'INPUT'
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PCT = 'PCT'
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SEPARATE = 'SEPARATE'
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OPTIONS = 'OPTIONS'
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EXTRA = 'EXTRA'
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DATA_TYPE = 'DATA_TYPE'
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NODATA_INPUT = 'NODATA_INPUT'
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NODATA_OUTPUT = 'NODATA_OUTPUT'
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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 __init__(self):
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super().__init__()
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def initAlgorithm(self, config=None):
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self.addParameter(QgsProcessingParameterMultipleLayers(self.INPUT,
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self.tr('Input layers'),
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QgsProcessing.TypeRaster))
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self.addParameter(QgsProcessingParameterBoolean(self.PCT,
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self.tr('Grab pseudocolor table from first layer'),
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defaultValue=False))
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self.addParameter(QgsProcessingParameterBoolean(self.SEPARATE,
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self.tr('Place each input file into a separate band'),
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defaultValue=False))
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nodata_param = QgsProcessingParameterNumber(self.NODATA_INPUT,
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self.tr('Input pixel value to treat as "nodata"'),
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type=QgsProcessingParameterNumber.Integer,
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defaultValue=None,
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optional=True)
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nodata_param.setFlags(nodata_param.flags() | QgsProcessingParameterDefinition.FlagAdvanced)
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self.addParameter(nodata_param)
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nodata_out_param = QgsProcessingParameterNumber(self.NODATA_OUTPUT,
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self.tr('Assign specified "nodata" value to output'),
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type=QgsProcessingParameterNumber.Integer,
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defaultValue=None,
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optional=True)
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nodata_out_param.setFlags(nodata_out_param.flags() | QgsProcessingParameterDefinition.FlagAdvanced)
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self.addParameter(nodata_out_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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extra_param = 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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extra_param.setFlags(extra_param.flags() | QgsProcessingParameterDefinition.FlagAdvanced)
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self.addParameter(extra_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('Merged')))
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def name(self):
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return 'merge'
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def displayName(self):
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return self.tr('Merge')
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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 icon(self):
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return QIcon(os.path.join(pluginPath, 'images', 'gdaltools', 'merge.png'))
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def commandName(self):
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return 'gdal_merge'
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def getConsoleCommands(self, parameters, context, feedback, executing=True):
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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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if self.parameterAsBoolean(parameters, self.PCT, context):
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arguments.append('-pct')
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if self.parameterAsBoolean(parameters, self.SEPARATE, context):
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arguments.append('-separate')
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if self.NODATA_INPUT in parameters and parameters[self.NODATA_INPUT] is not None:
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nodata_input = self.parameterAsInt(parameters, self.NODATA_INPUT, context)
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arguments.append('-n')
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arguments.append(str(nodata_input))
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if self.NODATA_OUTPUT in parameters and parameters[self.NODATA_OUTPUT] is not None:
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nodata_output = self.parameterAsInt(parameters, self.NODATA_OUTPUT, context)
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arguments.append('-a_nodata')
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arguments.append(str(nodata_output))
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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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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 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('-o')
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arguments.append(out)
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# Always write input files to a text file in case there are many of them and the
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# length of the command will be longer then allowed in command prompt
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list_file = GdalUtils.writeLayerParameterToTextFile(filename='mergeInputFiles.txt', alg=self, parameters=parameters, parameter_name=self.INPUT, context=context, quote=True, executing=executing)
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arguments.append('--optfile')
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arguments.append(list_file)
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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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