[gdal-dev] non-fully conform output of gdalwarp

[Matthieu Rigal]

Hi guys,

Working with GDAL 1.6.1, I got some strange result. It is not very 
compromising, because the result is OK, but it shall be enhanced, or I shall 
learn how to use it.

giving the following command :
gdalwarp -t_srs 'PROJCS["ETRS89_GRS80_3",GEOGCS["LUA_ETRS89",DATUM["D_GRS_1980",SPHEROID["GRS_1980",6378137.0,298.257222101]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Transverse_Mercator"],PARAMETER["False_Easting",3500000.0],PARAMETER["False_Northing",0.0],PARAMETER["Central_Meridian",15.0],PARAMETER["Scale_Factor",0.9996],PARAMETER["Latitude_Of_Origin",0.0],UNIT["Meter",1.0]]' 
8_WGS84.tif 8_ETRS89.tif

will create the desired file, and project it fine, but doing :
gdalinfo 8_ETRS89.tif
will show :
PROJCS["ETRS89_GRS80_3",
    GEOGCS["LUA_ETRS89",
        DATUM["unknown",
            SPHEROID["unnamed",6378137,298.2572221010042]],
        PRIMEM["Greenwich",0],
        UNIT["degree",0.0174532925199433]],
    PROJECTION["Transverse_Mercator"],
    PARAMETER["latitude_of_origin",0],
    PARAMETER["central_meridian",15],
    PARAMETER["scale_factor",0.9996],
    PARAMETER["false_easting",3500000],
    PARAMETER["false_northing",0],
    UNIT["metre",1,
        AUTHORITY["EPSG","9001"]]]

Why is the Datum set to unknown and the spheroid to unnamed ?

It also causes some other software to warn that the projection is not the same 
(as the desired)...

Best regards,
Matthieu
-- 
Matthieu Rigal
Product Development

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