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0f226645fa
-consistent parameters naming -use additional creation options where possible -remove duplicated functionality
137 lines
5.7 KiB
Python
137 lines
5.7 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 : October 2014
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Copyright : (C) 2014 by Radoslaw Guzinski
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Email : rmgu at dhi-gras 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__ = 'Radoslaw Guzinski'
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__date__ = 'October 2014'
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__copyright__ = '(C) 2014, Radoslaw Guzinski'
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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 (QgsProcessing,
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QgsProperty,
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QgsProcessingParameterMultipleLayers,
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QgsProcessingParameterEnum,
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QgsProcessingParameterBoolean,
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QgsProcessingParameterRasterDestination,
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QgsProcessingOutputLayerDefinition,
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QgsProcessingUtils)
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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 buildvrt(GdalAlgorithm):
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INPUT = 'INPUT'
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OUTPUT = 'OUTPUT'
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RESOLUTION = 'RESOLUTION'
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SEPARATE = 'SEPARATE'
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PROJ_DIFFERENCE = 'PROJ_DIFFERENCE'
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RESOLUTION_OPTIONS = ['average', 'highest', 'lowest']
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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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class ParameterVrtDestination(QgsProcessingParameterRasterDestination):
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def __init__(self, name, description):
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super().__init__(name, description)
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def clone(self):
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copy = ParameterVrtDestination(self.name(), self.description())
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return copy
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def type(self):
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return 'vrt_destination'
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def defaultFileExtension(self):
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return 'vrt'
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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(QgsProcessingParameterEnum(self.RESOLUTION,
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self.tr('Resolution'),
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options=self.RESOLUTION_OPTIONS,
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defaultValue=0))
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self.addParameter(QgsProcessingParameterBoolean(self.SEPARATE,
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self.tr('Layer stack'),
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defaultValue=True))
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self.addParameter(QgsProcessingParameterBoolean(self.PROJ_DIFFERENCE,
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self.tr('Allow projection difference'),
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defaultValue=False))
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self.addParameter(ParameterVrtDestination(self.OUTPUT, self.tr('Virtual')))
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def name(self):
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return 'buildvirtualraster'
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def displayName(self):
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return self.tr('Build Virtual Raster')
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def icon(self):
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return QIcon(os.path.join(pluginPath, 'images', 'gdaltools', 'vrt.png'))
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def group(self):
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return self.tr('Raster miscellaneous')
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def getConsoleCommands(self, parameters, context, feedback):
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arguments = []
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arguments.append('-resolution')
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arguments.append(self.RESOLUTION_OPTIONS[self.parameterAsEnum(parameters, self.RESOLUTION, context)])
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if self.parameterAsBool(parameters, buildvrt.SEPARATE, context):
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arguments.append('-separate')
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if self.parameterAsBool(parameters, buildvrt.PROJ_DIFFERENCE, context):
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arguments.append('-allow_projection_difference')
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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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listFile = os.path.join(QgsProcessingUtils.tempFolder(), 'buildvrtInputFiles.txt')
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with open(listFile, 'w') as f:
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layers = []
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for l in self.parameterAsLayerList(parameters, self.INPUT, context):
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layers.append(l.source())
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f.write('\n'.join(layers))
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arguments.append('-input_file_list')
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arguments.append(listFile)
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out = self.parameterAsOutputLayer(parameters, self.OUTPUT, context)
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# Ideally the file extensions should be limited to just .vrt but I'm not sure how
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# to do it simply so instead a check is performed.
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_, ext = os.path.splitext(out)
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if not ext.lower() == '.vrt':
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out = out[:-len(ext)] + '.vrt'
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if isinstance(parameters[self.OUTPUT], QgsProcessingOutputLayerDefinition):
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output_def = QgsProcessingOutputLayerDefinition(parameters[self.OUTPUT])
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output_def.sink = QgsProperty.fromValue(out)
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self.setOutputValue(self.OUTPUT, output_def)
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else:
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self.setOutputValue(self.OUTPUT, out)
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arguments.append(out)
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return ['gdalbuildvrt', GdalUtils.escapeAndJoin(arguments)]
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