[postgis-users] Projection(s) for global point-and-radius searches

David Jantzen djantzen at ql2.com
Wed Jul 7 14:03:25 PDT 2010


Ok, interesting.  Is it equivalent then to using a GEOMETRY type with SRID 4326?

On Jul 7, 2010, at 12:25 PM, Paul Ramsey wrote:

> On Wed, Jul 7, 2010 at 12:25 PM, Paul Ramsey <pramsey at opengeo.org> wrote:
>> ST_Buffer(geography, float8) returns geography
>> ST_Intersection(geography, geography) returns geography
> 
> These last two actually *do* carry out projections under the covers,
> so watch out.
> 
> P
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