Joel Odom wrote:
Is it possible to transform between a Lambert projection (NAD83 datum) and WGS84 geographic? I'm trying the following, but poCT is null:OGRSpatialReference oSRS; if (oSRS.importFromWkt((char**)&projectionRef) != OGRERR_NONE) //... OGRSpatialReference wgs84; wgs84.SetWellKnownGeogCS("WGS84"); OGRCoordinateTransformation *poCT = OGRCreateCoordinateTransformation(&oSRS, &wgs84); In this case oSRS is the Lambert Conformal / NAD83. Thanks for any help.
Joel, Yes, this should work fine assuming thereis nothing funky about your LCC projection definition. Note that OGR/PROJ.4 consider NAD83 and WGS84 to be equivelent datums for transformation purposes. If you post your projection string for the LCC I could try it here for comparison. Best regards, -- ---------------------------------------+-------------------------------------- I set the clouds in motion - turn up | Frank Warmerdam, [email protected] light and sound - activate the windows | http://pobox.com/~warmerdam and watch the world go round - Rush | Geospatial Programmer for Rent _______________________________________________ gdal-dev mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/gdal-dev
