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136 lines
5.4 KiB
Python
136 lines
5.4 KiB
Python
# -*- coding: utf-8 -*-
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"""
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***************************************************************************
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translate.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 PyQt4 import QtGui
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from qgis.core import *
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from processing.core.GeoAlgorithm import GeoAlgorithm
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from processing.parameters.ParameterString import ParameterString
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from processing.parameters.ParameterRaster import ParameterRaster
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from processing.parameters.ParameterNumber import ParameterNumber
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from processing.parameters.ParameterBoolean import ParameterBoolean
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from processing.parameters.ParameterSelection import ParameterSelection
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from processing.parameters.ParameterExtent import ParameterExtent
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from processing.parameters.ParameterCrs import ParameterCrs
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from processing.outputs.OutputRaster import OutputRaster
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from processing.gdal.GdalUtils import GdalUtils
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class translate(GeoAlgorithm):
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INPUT = 'INPUT'
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OUTPUT = 'OUTPUT'
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OUTSIZE = 'OUTSIZE'
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OUTSIZE_PERC = 'OUTSIZE_PERC'
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NO_DATA = 'NO_DATA'
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EXPAND = 'EXPAND'
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PROJWIN = 'PROJWIN'
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SRS = 'SRS'
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SDS = 'SDS'
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EXTRA = 'EXTRA'
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def getIcon(self):
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filepath = os.path.dirname(__file__) + '/icons/translate.png'
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return QtGui.QIcon(filepath)
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def commandLineName(self):
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return "gdalogr:translate"
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def defineCharacteristics(self):
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self.name = 'Translate (convert format)'
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self.group = '[GDAL] Conversion'
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self.addParameter(ParameterRaster(self.INPUT, 'Input layer',
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False))
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self.addParameter(ParameterNumber(self.OUTSIZE,
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'Set the size of the output file (In pixels or %)',
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1, None, 100))
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self.addParameter(ParameterBoolean(self.OUTSIZE_PERC,
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'Output size is a percentage of input size', True))
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self.addParameter(ParameterString(self.NO_DATA,
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'Nodata value, leave as none to take the nodata value from input',
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'none'))
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self.addParameter(ParameterSelection(self.EXPAND, 'Expand',
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['none', 'gray', 'rgb', 'rgba']))
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self.addParameter(ParameterCrs(self.SRS,
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'Override the projection for the output file', None))
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self.addParameter(ParameterExtent(self.PROJWIN,
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'Subset based on georeferenced coordinates'))
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self.addParameter(ParameterBoolean(self.SDS,
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'Copy all subdatasets of this file to individual output files',
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False))
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self.addParameter(ParameterString(self.EXTRA,
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'Additional creation parameters', '', optional=True))
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self.addOutput(OutputRaster(self.OUTPUT, 'Output layer'))
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def processAlgorithm(self, progress):
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out = self.getOutputValue(translate.OUTPUT)
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outsize = str(self.getParameterValue(self.OUTSIZE))
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outsizePerc = str(self.getParameterValue(self.OUTSIZE_PERC))
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noData = str(self.getParameterValue(self.NO_DATA))
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expand = str(self.getParameterFromName(
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self.EXPAND).options[self.getParameterValue(self.EXPAND)])
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projwin = str(self.getParameterValue(self.PROJWIN))
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crsId = self.getParameterValue(self.SRS)
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sds = self.getParameterValue(self.SDS)
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extra = str(self.getParameterValue(self.EXTRA))
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arguments = []
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arguments.append('-of')
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arguments.append(GdalUtils.getFormatShortNameFromFilename(out))
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if outsizePerc == 'True':
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arguments.append('-outsize')
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arguments.append(outsize + '%')
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arguments.append(outsize + '%')
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else:
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arguments.append('-outsize')
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arguments.append(outsize)
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arguments.append(outsize)
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arguments.append('-a_nodata')
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arguments.append(noData)
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if expand != 'none':
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arguments.append('-expand')
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arguments.append(expand)
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regionCoords = projwin.split(',')
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arguments.append('-projwin')
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arguments.append(regionCoords[0])
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arguments.append(regionCoords[3])
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arguments.append(regionCoords[1])
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arguments.append(regionCoords[2])
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if crsId is not None:
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arguments.append('-a_srs')
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arguments.append(str(crsId))
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if sds:
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arguments.append('-sds')
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if len(extra) > 0:
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arguments.append(extra)
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arguments.append(self.getParameterValue(self.INPUT))
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arguments.append(out)
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GdalUtils.runGdal(['gdal_translate',
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GdalUtils.escapeAndJoin(arguments)], progress)
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