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116 lines
5.2 KiB
Python
116 lines
5.2 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 sextante.core.GeoAlgorithm import GeoAlgorithm
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from sextante.parameters.ParameterString import ParameterString
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from sextante.parameters.ParameterRaster import ParameterRaster
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from sextante.parameters.ParameterNumber import ParameterNumber
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from sextante.parameters.ParameterBoolean import ParameterBoolean
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from sextante.parameters.ParameterSelection import ParameterSelection
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from sextante.parameters.ParameterExtent import ParameterExtent
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from sextante.parameters.ParameterCrs import ParameterCrs
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from sextante.outputs.OutputRaster import OutputRaster
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from sextante.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 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(translate.INPUT, "Input layer", False))
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self.addParameter(ParameterNumber(translate.OUTSIZE, "Set the size of the output file (In pixels or %)", 1, None, 100))
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self.addParameter(ParameterBoolean(translate.OUTSIZE_PERC, "Output size is a percentage of input size", True))
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self.addParameter(ParameterString(translate.NO_DATA, "Nodata value, leave as none to take the nodata value from input", "none"))
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self.addParameter(ParameterSelection(translate.EXPAND, "Expand", ["none","gray","rgb","rgba"]))
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self.addParameter(ParameterCrs(translate.SRS, "Override the projection for the output file", None))
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self.addParameter(ParameterExtent(translate.PROJWIN, "Subset based on georeferenced coordinates"))
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self.addParameter(ParameterBoolean(translate.SDS, "Copy all subdatasets of this file to individual output files", False))
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self.addParameter(ParameterString(translate.EXTRA, "Additional creation parameters", ""))
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self.addOutput(OutputRaster(translate.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(translate.OUTSIZE))
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outsizePerc = str(self.getParameterValue(translate.OUTSIZE_PERC))
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noData = str(self.getParameterValue(translate.NO_DATA))
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expand = str(self.getParameterFromName(translate.EXPAND).options[self.getParameterValue(translate.EXPAND)])
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projwin = str(self.getParameterValue(translate.PROJWIN))
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srs = self.getParameterValue(translate.SRS)
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sds = self.getParameterValue(translate.SDS)
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extra = str(self.getParameterValue(translate.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 srs is not None:
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arguments.append("-a_srs")
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arguments.append(str(srs))
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self.crs = QgsCoordinateReferenceSystem(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(translate.INPUT))
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arguments.append(out)
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GdalUtils.runGdal(["gdal_translate", GdalUtils.escapeAndJoin(arguments)], progress)
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