72 lines
2.6 KiB
Python
72 lines
2.6 KiB
Python
#!/usr/bin/env python3
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# ******************************************************************************
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# $Id: gcps2wld.py ffccab1ee20b5151e9bd45f1a2c46245a74f1f56 2021-04-23 14:05:42 +0300 Idan Miara $
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#
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# Name: gcps2wld
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# Project: GDAL Python Interface
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# Purpose: Translate the set of GCPs on a file into first order approximation
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# in world file format.
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# Author: Frank Warmerdam, warmerdam@pobox.com
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#
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# ******************************************************************************
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# Copyright (c) 2002, Frank Warmerdam
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# Copyright (c) 2009-2010, Even Rouault <even dot rouault at spatialys.com>
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#
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# Permission is hereby granted, free of charge, to any person obtaining a
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# copy of this software and associated documentation files (the "Software"),
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# to deal in the Software without restriction, including without limitation
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# the rights to use, copy, modify, merge, publish, distribute, sublicense,
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# and/or sell copies of the Software, and to permit persons to whom the
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# Software is furnished to do so, subject to the following conditions:
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#
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# The above copyright notice and this permission notice shall be included
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# in all copies or substantial portions of the Software.
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#
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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# OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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# THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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# DEALINGS IN THE SOFTWARE.
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# ******************************************************************************
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import sys
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from osgeo import gdal
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def main(argv):
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if len(argv) < 2:
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print("Usage: gcps2wld.py source_file")
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return 1
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filename = argv[1]
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dataset = gdal.Open(filename)
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if dataset is None:
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print('Unable to open %s' % filename)
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return 1
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gcps = dataset.GetGCPs()
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if gcps is None or not gcps:
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print('No GCPs found on file ' + filename)
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return 1
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geotransform = gdal.GCPsToGeoTransform(gcps)
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if geotransform is None:
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print('Unable to extract a geotransform.')
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return 1
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print(geotransform[1])
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print(geotransform[4])
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print(geotransform[2])
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print(geotransform[5])
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print(geotransform[0] + 0.5 * geotransform[1] + 0.5 * geotransform[2])
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print(geotransform[3] + 0.5 * geotransform[4] + 0.5 * geotransform[5])
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if __name__ == '__main__':
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sys.exit(main(sys.argv))
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