[gdal-dev] Lambert 93 problem with GDAL 1.11.0

orel aurelien.albert at alyotech.fr
Thu Jul 17 07:07:52 PDT 2014


Hi,

I've downloaded GDAL 1.11.0 sources and built it, with Proj 4.8, under Win7
(32bits compilation)

I've got problems using shape file with "Lambert 93" projection defined as
follow (ogrinfo output) :

PROJCS["Lambert_Conformal_Conic",
    GEOGCS["GCS_Geographic Coordinate System",
        DATUM["RGF-93",
            SPHEROID["GRS_1980",6378137,298.257222101]],
        PRIMEM["Greenwich",0],
        UNIT["Degree",0.017453292519943295]],
    PROJECTION["Lambert_Conformal_Conic_2SP"],
    PARAMETER["scale_factor",1],
    PARAMETER["standard_parallel_1",44],
    PARAMETER["standard_parallel_2",49],
    PARAMETER["central_meridian",3],
    PARAMETER["latitude_of_origin",46.5],
    PARAMETER["false_easting",700000],
    PARAMETER["false_northing",6600000],
    UNIT["Meter",1]]

Everytime I reproject this shapefile using "ogr2ogr -t_srs" the points are
moved by more than 100 km !

Is there any error in OGR code ? EPSG database ? My file's WKT ?

Thanks !




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