Hi, I have a collection of MrSid images with embedded georeferencing information and accompanying world files. The world files have correct geotransform values, but the information embedded in the sid files is incorrect. My installation of gdal 1.7 gives precedence to the embedded georeferencing over the world file. Based on this mail [1], I understand that this order of precedence was a gdal design decision and I need to use a vrt file to alter the geotransform. Since I have many files and I don't expect that the government supplier will correct the data for me I have started writing a script to generate the vrt files and then alter the geotransform in the vrt based on values found in the world file.
Before I proceed much further I wish to pose two questions: 1. Is there a gdal environment variable I may have missed that can be used to give precedence to the world file? 2. Is there any freely available software that will modify the metadata tags in a sid file? PS I would rather not translate from sid to tif. Much thanks, Craig [1] http://n2.nabble.com/Georeferencing-Mrsid-raster-file-with-a-world-file-td1994277.html#a1994280 _______________________________________________ gdal-dev mailing list gdal-dev@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/gdal-dev
