PostGIS users, I've been blogging over the past several months about some big performance improvements in PostGIS, prepared geometries <http://blog.cleverelephant.ca/2008/10/postgis-performance-prepared-geometry.html> and cascaded union <http://blog.cleverelephant.ca/2009/01/must-faster-unions-in-postgis-14.html>, which have been brought over from JTS over the past year.
What both these features have in common is that they require GEOS 3.1. We have begun a Release Candidate series for GEOS, and now need testing to ensure it is ready for full release. In order to try these features, you will need. - PostGIS SVN snap (aka 1.4): http://postgis.refractions.net/download/postgis-1.4.0SVN.tar.gz - GEOS 3.1RC2: http://download.osgeo.org/geos/geos-3.1.0rc2.tar.bz2 First compile and install GEOS, then PostGIS. The functions that have been sped up include: ST_Union(geometry) aggregate ST_Intersects() ST_Contains() ST_Within() ST_Covers() Thanks, Paul _______________________________________________ postgis-users mailing list [email protected] http://postgis.refractions.net/mailman/listinfo/postgis-users
