Craig, The mechanism that Jukka mentions is MapServer-only. Reviewing the code, it appears that shapefiles are still just a fallback if no georeferencing is found internally.
I am not aware of software for overriding mrsid georeferencing in the file. Best regards, On Tue, Jan 26, 2010 at 8:42 PM, Craig Leat <[email protected]> wrote: > 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 > [email protected] > http://lists.osgeo.org/mailman/listinfo/gdal-dev > -- ---------------------------------------+-------------------------------------- I set the clouds in motion - turn up | Frank Warmerdam, [email protected] light and sound - activate the windows | http://pobox.com/~warmerdam and watch the world go round - Rush | Geospatial Programmer for Rent _______________________________________________ gdal-dev mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/gdal-dev
