[MetaCRS] Oracle WKT

[Frank Warmerdam]

Hugues Wisniewski wrote:
> Hi all,
> 
> As Frank pointed out Cs-Map is a library that is handling Oracle WKT. A lot
> of time and energy has been spent generating the various WKT flavor
> mappings. Reusing this library would save a lot of energy which could be
> redirected to improving this mapping when a missing entry is found. 
> Improving the mapping is also an ongoing task so if everyone contributed
> that would concentrate the energy on a single piece of code.

Hugues,

We (GDAL) have decided to just call out to CS-Map for translation of
Oracle coordinate systems.  CS-Map will be an optional dependency of GDAL
and GDAL/OGR's Oracle driver will still operate with little or no
coordinate system support (as is now) if CS-Map was not linked into GDAL.

We normally dislike adding such substantial additional dependencies in
GDAL for what is a rather specific bit of functionality, but we have decided
to do this to avoid duplicating complex functionality, and in the hopes it
may lead to future cooperation.

So, I think GDAL will join MapGuide as an early-adopter of the newly open
sourced CS-Map!

GDAL also has a mechanism where - in theory - different projection engines
can be used for things like image warping, and geometry warping.  Once
we have the configuration mechanism in place to link against CS-Map
I'll likely experiment with optionally being able to use CS-Map in place
of PROJ for coordinate system translation.

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    | President OSGeo, http://osgeo.org