[Gdal-dev] Transforming shapefiles from euref89 to ed50

[Jakob Simon-Gaarde/Trapsoft Inc]

Hello.

I have a shapefile in the projection "UTM euref89 - Zone 32 north" which I
need to transform to the projection "UTM ed50 - Zone 32 north".
I have tried the following:

ogr2ogr -s_srs euref89_32n.wkt -t_srs ed50_32n.wkt out.shp stops_ll.shp

where euref89_32n.wkt contains:
PROJCS["ETRF_1989_UTM_Zone_32N",
    GEOGCS["EUREF89_32N",
        DATUM["ETRF_1989",
            SPHEROID["WGS_1984",6378137.0,298.257223563]],
        PRIMEM["Greenwich",9.0],
        UNIT["Degree",0.0174532925199433]],
    PROJECTION["Transverse_Mercator"],
    PARAMETER["False_Easting",500000.0],
    PARAMETER["False_Northing",0.0],
    PARAMETER["Central_Meridian",9.0],
    PARAMETER["Scale_Factor",0.9996],
    PARAMETER["Latitude_Of_Origin",0.0],
    UNIT["Meter",1.0]]

and ed5089_32n.wkt contains:
PROJCS["ED_1950_UTM_Zone_32N",
    GEOGCS["GCS_European_1950",
        DATUM["European_1950",
            SPHEROID["International_1924",6378388,297]],
        PRIMEM["Greenwich",0],
        UNIT["Degree",0.0174532925199433]],
    PROJECTION["Transverse_Mercator"],
    PARAMETER["False_Easting",500000],
    PARAMETER["False_Northing",0],
    PARAMETER["Central_Meridian",9],
    PARAMETER["Scale_Factor",0.9996],
    PARAMETER["Latitude_Of_Origin",0],
    UNIT["Meter",1]]

ogr results in following transformation:
(523999.60582 ; 6092835.36626) -> (1099082.776 ; 6133192.723)
(527527.56990 ; 6094198.96889) -> (1102420.779 ; 6135007.083)
(550925.36281;  6085171.60262) -> (1126899.377 6129037.630)


I then tried using a commercial transformationtool, and it did the job
right:
(523999.60582 ; 6092835.36626) -> (524080.088 6093041.491)
(527527.56990 ; 6094198.96889) -> (527608.073 ; 6094405.086)
(550925.36281 ; 6085171.60262) -> (551005.934 ; 6085377.520)

What am I doing wrong - is it the wkt-files? I got those from two
shapefiles with the projections I need.

Please help :-(

Med venlig hilsen / Best regards
Jakob Simon-Gaarde

Trapeze Software Europe A/S
Tlf. 87 44 16 00