The first release candidate of new PostGIS 1.0 series is now ready for general download and testing. The 1.0 series is actually a departure from the previous 0.X series, in that the underlying disk representation of geometries is completely new. The new "lightweight" geometries are much smaller (particularly for 2D features, points, and short lines) and the indexes are also much smaller. The result is fewer disk accesses needed, better use of memory cache, and a faster system overall, particularly for large databases.
PostGIS 0.9.1 is a minor maintainance release, including the following new features: AsSVG() function Reverse() function New Spatial_Ref_Sys table The release also includes numerous small bug fixes.
PostGIS 0.9.0 is an important maintainance release, including the following new features: PostgreSQL 8.0 Support PostgreSQL 8.0 Statistics Integration VACUUM ANALYZE now automatically updates spatial selectivity stats PostgreSQL 8.0 Windows Support GEOS 2.0 Support GEOS 2.0 includes important enhancements to Buffer(), Intersection() and Union() AsSVG() Function Improved spatial index estimation Cleaner build system The release also includes numerous small bug fixes.
PostGIS 0.8.2 is an important maintainance release, including the following new features: PostgreSQL 7.5 Support PostgreSQL 7.5 Statistics Integration Optional Experimental Light-weight Geometry (LWGEOM) Faster queries Smaller databases Four dimensional geometry New functions The release also includes numerous small bug fixes, for different platforms and high load use cases.
We are very happy to announce the release of PostGIS 0.8.0, the first version of PostGIS that supports every function in the OpenGIS "Simple Features for SQL" specification document. The PostGIS 0.8.0 source code includes the OpenGIS SFSQL conformance test suite, so give it a try and see how we do! Version 0.8 includes such useful SFSQL functions as Within(), Disjoint(), Touches(), GeomUnion(), Intersection(), Buffer(), and many many more!
The first release of GEOS (geometry engine, open source) has been released at https://libgeos.org/. Using the GEOS library, it is possible for PostGIS to perform all the operations in the OpenGIS Simple Features for SQL Specification. That means that operations like Touches(), Contains(), Intersection(), Buffer(), Centroid(), Union() can all be supported. To try out PostGIS-with-GEOS, download the CVS snapshot of PostGIS and follow the directions in the README file carefully.
David Blasby and Chris Hodgson, gave a presentation and workshop on using Mapserver and PostGIS to create web mapping sites which embed interesting analytical results not normally producable using flat file data. The talk materials are available online: a presentation, a workshop guide, and an example mapfile.
David Blasby and Chris Hodgson, primary developers of the PostGIS open source spatial database, will be giving a three-hour workshop at the Mapserver Users Meeting. The user meeting is taking place at the University of Minnesota in St. Paul, June 6-7, and the workshop will be focusing on the SQL and map-file syntax for displaying and querying data stored in PostGIS using Mapserver. For more info about the MUM, please visit https://mapserver.
