[postgis-devel] Transform() PROJ4 cache patch

Markus Schaber schabi at logix-tt.com
Fri Nov 4 06:48:01 PST 2005

Hi, Strk,

'strk' wrote:
> Thanks for timing Mark.
> It seems there's no much to gain from invoking transform_geometry
> directly in terms of performance.
> Still, I'd keep it as users might want to perform reprojection
> even w/out a spatial_ref_sys table.
> There's no work involved in keeping it, so what's the point of
> removing it ?

There's another possible use case: Use on-the-fly autogenerated
projections that are optimized for the current map display area. Adding
temporary spatial_ref_sys entries for this purpose seems cumbersome...


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