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[processing] add Extract projection algorithm
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python/plugins/processing/gdal/scripts/extractprojection.py
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# -*- coding: utf-8 -*- | ||
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""" | ||
*************************************************************************** | ||
extractprojection.py | ||
--------------------- | ||
Date : September 2013 | ||
Copyright : (C) 2013 by Alexander Bruy | ||
Email : alexander dot bruy at gmail dot com | ||
*************************************************************************** | ||
* * | ||
* This program is free software; you can redistribute it and/or modify * | ||
* it under the terms of the GNU General Public License as published by * | ||
* the Free Software Foundation; either version 2 of the License, or * | ||
* (at your option) any later version. * | ||
* * | ||
*************************************************************************** | ||
""" | ||
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__author__ = 'Alexander Bruy' | ||
__date__ = 'September 2013' | ||
__copyright__ = '(C) 2013, Alexander Bruy' | ||
# This will get replaced with a git SHA1 when you do a git archive | ||
__revision__ = '$Format:%H$' | ||
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##Input_file=raster | ||
##Create_prj_file=boolean False | ||
##[GDAL] Projections=group | ||
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import os | ||
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from osgeo import gdal, osr | ||
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from processing.gdal.GdalUtils import GdalUtils | ||
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raster = gdal.Open(unicode(Input_file)) | ||
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crs = raster.GetProjection() | ||
geotransform = raster.GetGeoTransform() | ||
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raster = None | ||
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outFileName = os.path.splitext(unicode(Input_file))[0] | ||
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# create prj file requested and if projection available | ||
if crs != "" and Create_prj_file: | ||
# convert CRS into ESRI format | ||
tmp = osr.SpatialReference() | ||
tmp.ImportFromWkt( crs ) | ||
tmp.MorphToESRI() | ||
crs = tmp.ExportToWkt() | ||
tmp = None | ||
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prj = open(outFileName + '.prj', 'wt') | ||
prj.write( crs ) | ||
prj.close() | ||
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# create wld file | ||
wld = open(outFileName + '.wld', 'wt') | ||
wld.write("%0.8f\n" % geotransform[1]) | ||
wld.write("%0.8f\n" % geotransform[4]) | ||
wld.write("%0.8f\n" % geotransform[2]) | ||
wld.write("%0.8f\n" % geotransform[5]) | ||
wld.write("%0.8f\n" % (geotransform[0] + 0.5 * geotransform[1] + 0.5 * geotransform[2])) | ||
wld.write("%0.8f\n" % (geotransform[3] + 0.5 * geotransform[4] + 0.5 * geotransform[5])) | ||
wld.close() |