pcs.csv accuracy ?

[pierrick.brihaye@…]

Hi,

Trying to assign a french SRS to a tif.file :

bin\gdal_translate -a_srs EPSG:27572 29_test.tif 29_test_geo.tif

The gdalinfo result is :
Driver: GTiff/GeoTIFF
Size is 4000, 4000
Coordinate System is:

PROJCS["NTF (Paris) / Lambert zone II",
    GEOGCS["NTF (Paris)",
        DATUM["unknown",
            SPHEROID["unretrievable - using WGS84",6378137,298.257223563,
                AUTHORITY["EPSG","0"]],
            AUTHORITY["EPSG","6807"]],
        PRIMEM["Paris",2.596921300000003],
        UNIT["grad",0.01570796326794895],
        AUTHORITY["EPSG","4807"]],
    PROJECTION["Lambert_Conformal_Conic_1SP"],
    PARAMETER["latitude_of_origin",57.77777777777791],
    PARAMETER["central_meridian",-2.885468111111118],
    PARAMETER["scale_factor",0.99987742],
    PARAMETER["false_easting",600000],
    PARAMETER["false_northing",2200000],
    UNIT["metre",1,
        AUTHORITY["EPSG","9001"]],
    AUTHORITY["EPSG","27572"]]
Origin = (40000.000000,2420000.000000)
Pixel Size = (2.50000000,-2.50000000)
Corner Coordinates:
Upper Left  (   40000.000, 2420000.000) 
Lower Left  (   40000.000, 2410000.000) 
Upper Right (   50000.000, 2420000.000) 
Lower Right (   50000.000, 2410000.000) 
Center      (   45000.000, 2415000.000) 
Band 1 Block=4000x2 Type=Byte, ColorInterp=Gray

Why these values for DATUM and SPHEROID ? It should be :

DATUM["Nouvelle Triangulation Francaise (Paris)",
      SPHEROID["Clarke 1880 (IGN)", 6378249.2, 293.4660212936269,
               AUTHORITY["EPSG","7011"]],
      AUTHORITY["EPSG","6807"]
],

Is it a problem with pcs.csv or with gdalinfo's interpretation of the SRS ?

Note : used today's http://qgis.org/GDALBuild.zip compiled distribution for Windows.

Cheers,

p.b.