[gdal-dev] Is proj.4 lib necessary for Reprojection and Transformation?

Even Rouault even.rouault at mines-paris.org
Mon Oct 19 13:44:10 EDT 2009

Selon atubar <atubar at 126.com>:

> After Reading API doc, I find it clear that GEOS lib is necessary for spatial
> analysis.
> And what about Proj? Does Gdal need supports from Proj lib for Reprojection
> and Transformation?

Yes, coordinate transformation and reprojection require PROJ.4 to be available
at runtime. I've just clarified that in the
http://gdal.org/ogr/classOGRCoordinateTransformation.html page.

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