[gdal-dev] Re: Bug in coordinate system library? unknown elliptical parameter for BNG coordinate system

Jean-Claude REPETTO jrepetto at free.fr
Tue Mar 23 15:10:01 EDT 2010

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.


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