[gdal-dev] Geocentric Coordinate System Support

[Frank Warmerdam]

Folks,

Yesterday I introduced Geocentric coordinate system support in
GDAL/OGR.  This includes OGRSpatialReference support for geocentric
coordinate systems, the ability to looking them up from EPSG, and
the ability to translate them to/from PROJ.4 format so they can be
used for transformation.  This is an example of a geocentric coordinate
system looked up from EPSG.  (Note the root is "GEOCCS")

GEOCCS["WGS 84 (geocentric)",
     DATUM["WGS_1984",
         SPHEROID["WGS 84",6378137,298.257223563,
             AUTHORITY["EPSG","7030"]],
         AUTHORITY["EPSG","6326"]],
     PRIMEM["Greenwich",0,
         AUTHORITY["EPSG","8901"]],
     UNIT["metre",1,
         AUTHORITY["EPSG","9001"]],
     AXIS["Geocentric X",OTHER],
     AXIS["Geocentric Y",OTHER],
     AXIS["Geocentric Z",NORTH],
     AUTHORITY["EPSG","4328"]]

I think there will be relatively little need for this coordinate system,
but I would appreciate feedback from anyone using it.

   http://trac.osgeo.org/gdal/changeset/21916

Best regards,
-- 
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I set the clouds in motion - turn up   | Frank Warmerdam, warmerdam at pobox.com
light and sound - activate the windows | http://pobox.com/~warmerdam
and watch the world go round - Rush    | Geospatial Programmer for Rent