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