Andreas Joisten a écrit :
As you can see I did not specifiy the ellipsoid parameter: gdalwarp -s_srs EPSG:27700 -t_srs EPSG:4326 input_geotiff_in_BNG.tiff output_geotiff.tiff
Sorry, but you didn't give this command line in your first message.
the gdal error message was: ERROR 6: Failed to initialize PROJ.4 with `+proj=tmerc +lat_0=49 +lon_0=-2 +k=0. 9996012717 +x_0=400000 +y_0=-100000 +ellps=airy +datum=OSGB36 +units=m +no_defs'. unknown elliptical parameter name
Your command works for me (GDAL 1.7.1) : $ gdalwarp -s_srs EPSG:27700 -t_srs EPSG:4326 essai.ecw essai.tif Creating output file that is 42102P x 22239L. Processing input file essai.ecw. 0... Jean-Claude _______________________________________________ gdal-dev mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/gdal-dev
