http://blog.cleverelephant.ca/2009/03/geos-310.html
The GEOS team is pleased to announce that GEOS 3.1.0 has been pushed
out the door, cold, wet, trembling and looking for love.http://download.osgeo.org/geos/geos-3.1.0.tar.bz2
Version 3.1.0 includes a number of improvements over the 3.0 version:
* PreparedGeometry operations for very fast predicate testing.
o Intersects()
o Covers()
o CoveredBy()
o ContainsProperly()
* Easier builds under MSVC and OpenSolaris
* Thread-safe CAPI option
* IsValidReason added to CAPI
* CascadedUnion operation for fast unions of geometry sets
* Single-sided buffering operation added
* Numerous bug fixes.Users of the upcoming PostGIS 1.4 will find that compiling against
GEOS 3.1 provides them access to some substantial performance
improvements and some extra functions.
Ciao,
Steko
--
Stefano Costa
http://www.iosa.it/ Open Archaeology