Dear mailing list, I'm having trouble geocoding image files in Envisat N1 format. I believe that the best way is to use gdalwarp with the geoloc flag, since the geo-information consists of large arrays of GCPs. But this fails with the error "unable to compute a geoloc_array based transformation..". I can extract the latitude and longitude rasters from an N1 file and put them into separate tif files. Is it possible to use them as input to gdalwarp, and how does the command look like in that case?
I have tried to geocode using thin plate spline (tps), but the execution time is extremely long, around 2 hours for each file. I tried to reduce the number of GCPs by a factor 20 (using gdal_translate etc.), but it had no effect on the execution time. Any help with this would be really appreciated. Thanks, Anders -- View this message in context: http://n2.nabble.com/gdalwarp-with-ENVISAT-N1-tp3559048p3559048.html Sent from the GDAL - Dev mailing list archive at Nabble.com. _______________________________________________ gdal-dev mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/gdal-dev
