[geos-devel] GEOS 3.1.0

Paul Ramsey pramsey at opengeo.org
Wed Mar 18 13:19:46 EDT 2009

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.


Version 3.1.0 includes a number of improvements over the 3.0 version:

- PreparedGeometry operations for very fast predicate testing.
  - Intersects()
  - Covers()
  - CoveredBy()
  - 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.

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