[postgis-users] Comparing Geometries with Different SRIDs

[Charlie Savage]

This looks like a related issue:

select 'srid=4326;point(3 3)'::geometry
union
select 'srid=4325;point(3 3)'::geometry

ERROR:  Operation on two GEOMETRIES with different SRIDs

I find that surprising, I would expect to get a result table with two rows.

Charlie

Charlie Savage wrote:
> Here is another SRID issue that seems strange:
> 
> select 'srid=4326;polygon((0 0, 0 5, 5 5, 5 0, 0 0))'::geometry = 
> 'point(2 2)'::geometry
> 
> 
> ERROR:  Operation on two GEOMETRIES with different SRIDs
> 
> 
> Why not just return FALSE?  I can see forcing the same SRID when 
> performing operations such as unions, but if the geometries have 
> different SRID's then it seems reasonable to assume they are not 
> equivalent.
> 
> 
> Charlie
> 
> 
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-- 
Charlie Savage
http://cfis.savagexi.com
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