[postgis-users] PostGIS Contains / Intersects / Within Performance

Bruce Rindahl rindahl at lrcwe.com
Fri Jan 25 19:58:29 PST 2008


Does the SVN of GEOS compile under MingW??
Bruce

-----Original Message-----
From: postgis-users-bounces at postgis.refractions.net
[mailto:postgis-users-bounces at postgis.refractions.net] On Behalf Of Paul
Ramsey
Sent: Friday, January 25, 2008 11:46 AM
To: PostGIS Users Discussion
Subject: [postgis-users] PostGIS Contains / Intersects / Within Performance

I'd love to see some people here with large data volumes who do  
contains/intersects/within tests do some testing of the new postgis/ 
geos prepared geometry code...

To test the new functions

- install the svn snapshot of GEOS
- install the svn snapshot of PostGIS
- use the ST_ContainsPrepared(g1,g2) predicate for the testing

We've seen performance improvements of between 5 and 100 times  
faster.  The bigger and more complicated your test geometries are,  
the faster it should be.

Thanks,

P.
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