http://osgeo-org.1803224.n2.nabble.com/file/n5848200/gdalwarp_problem1.doc gdalwarp_problem1.doc Hi Uwe,
I have tried your suggestion on the same raster file with a modified "+x_0=500000" parameter in the command line (as seen in the attached doc). I could see the major difference:there is still one error message left. When I tried on another raster file with the same modified parameter, I have got much less error messages than before. However, is it still possible that my raster data are outside the area of the grid shift file? All the raster data I was trying to transform are GK (DHDN) zone 4, which false easting value is 4500000. This was why I used "+x_0=4500000" instead of "+x_0=500000" in the command line. As I am getting to know all these georeference settings at the moment, can you tell me why you suggested the modified parameter and what you meant about "raster data lacks the Gauss-Krueger meridian prefix"? Thanks for your help again. Best Regards, Heng -- View this message in context: http://osgeo-org.1803224.n2.nabble.com/An-issue-about-using-GDALWARP-to-do-the-NTv2-transformation-tp5838904p5848200.html Sent from the GDAL - Dev mailing list archive at Nabble.com. _______________________________________________ gdal-dev mailing list gdal-dev@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/gdal-dev
