[postgis-users] Custom projections

[Paul Ramsey]

The internal SRID's in the database are local to your system. The 
AUTH_SRID is local to the SRID authority. I just made them the same for 
convenience to those people (like me) who have actually memorized an 
unfortunately large number of EPSG SRID codes.

So, to add your own, just insert a new record into the table. Choose 
whatever SRID you like, make the authority yourself. The SRTEXT is not 
required, although it is probably good practice, and the PROJ4TEXT will 
be used for the actual reprojection by the proj4 library.

strk wrote:
> Hello, I'm in need of adding a custom projection to
> spatial_ref_sys (can't find the one I need).
> 
> Is there a reserved range of SRID for use in these cases ?
> Should I use a special auth_name and can I leave srtext blank ?
> 
> --strk;
> 
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