Hi All, I am a new user to GDAL/OGR, and am looking for conversion methods between geographic systems, projection systems, and the geocentric 3D cartesian system. The OGRSpatialReference class seems to only create geographic, but not geocentric systems. A few searches on the web revealed that the geocentric system was not implement on OGR ( http://lists.osgeo.org/pipermail/gdal-dev/2006-April/008630.html). But that was an old thread.
So, is the geocentric system supported now on GDAL1.6.0? And if so, how may I create a geocentric reference? And if not, are there any extensions to GDAL/OGR or PROJ that may have implemented it? I have also looked into PROJ, there are a couple of functions to do geocentric-geodetic conversions. Are there functions to convert from a projective reference to either geodetic or geocentric systems? Is there an API reference to PROJ? Would prefer to use OGR than PROJ as it is object oriented. Any pointers would be much appreciated! Thanks. -ung
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