[gdal-dev] Lambert 93 problem with GDAL 1.11.0

[Frédéric Trastour]

Hi, 

It seems that in your wkt standard_parallel_1 et standard_parallel_2 values are inverted.
Take a look at : http://spatialreference.org/ref/epsg/2154/prettywkt/

Br,
Fred.

-----Message d'origine-----
De : gdal-dev-bounces at lists.osgeo.org [mailto:gdal-dev-bounces at lists.osgeo.org] De la part de orel
Envoyé : jeudi 17 juillet 2014 16:08
À : gdal-dev at lists.osgeo.org
Objet : [gdal-dev] Lambert 93 problem with GDAL 1.11.0

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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