id,summary,reporter,owner,description,type,status,priority,milestone,component,version,severity,resolution,keywords,cc 1416,Problem with MapInfo file and NTF system,jean-claude.repetto@…,warmerdam,"I have downloaded a vectorial map of France in MapInfo format (freely available from the IGN website, see URL). I am trying to convert it to WGS84 with ogr2ogr, but the result is wrong, the longitudes have an offset of 2.33° (corresponding to the Paris prime meridian). The original file contains this definition of CS and projection : {{{ CoordSys Earth Projection 3, 1002, ""m"", 0, 46.8, 45.898918964419, 47.696014502038, 600000, 2200000 Bounds (-113967455.417, - 106367759.649) (115167455.417, 122767151.185) Projection type 3 = Lambert Conformal Conic Datum 1002 = datum name: Nouvelle Triangulation Francaise (NTF) Paris Prime Meridian Area: France Ellipsoid: Modified Clarke 1880 }}} But ogrinfo gives that information : {{{ Layer SRS WKT: PROJCS[""unnamed"", GEOGCS[""unnamed"", DATUM[""NTF_Paris_Meridian"", SPHEROID[""Clarke 1880 (modified for IGN)"",6378249.2,293.4660213], TOWGS84[-168,-60,320,-0,-0,-0,0]], PRIMEM[""Greenwich"",0], UNIT[""degree"",0.0174532925199433]], PROJECTION[""Lambert_Conformal_Conic_2SP""], PARAMETER[""standard_parallel_1"",45.898918964419], PARAMETER[""standard_parallel_2"",47.696014502038], PARAMETER[""latitude_of_origin"",46.8], PARAMETER[""central_meridian"",0], PARAMETER[""false_easting"",600000], PARAMETER[""false_northing"",2200000], UNIT[""Meter"",1]] }}} I think the central_meridian be equal to 2.33°. (I am using GDAL 1.4.0beta2 and proj 4.5.0). ",defect,closed,highest,1.4.2,OGR_SRS,1.4.0,major,fixed,,