News
Free and Open Source Software for Geospatial Conference 2010
September 6-9, 2010
The international open source GIS conference. The call for papers is now open!
March 11, 2010
The 1.5.1 release of PostGIS is now available. This is a minor release addressing a few issues that have been filed since the 1.5.0 release.
- Fix to allow dumping table with invalid geometries
- Fixes to ST_SetPoint, ST_AddPoint, ST_RemovePoint, ST_AsGML, and ST_Line_Substring
- Fixes for geography features crossing the date line
What is PostGIS?
PostGIS adds support for geographic objects to the PostgreSQL object-relational database. In effect, PostGIS "spatially enables" the PostgreSQL server, allowing it to be used as a backend spatial database for geographic information systems (GIS),
much like ESRI's SDE or Oracle's Spatial extension.
PostGIS follows the OpenGIS "Simple Features Specification for SQL" and has been certified as compliant with the "Types and Functions" profile.
PostGIS has been developed by Refractions Research as a project in open source spatial database technology.
PostGIS is released under the GNU General Public License. We continue to develop PostGIS, and have added user interface tools, basic topology support, data validation, coordinate transformation, programming APIs and much more.
Our list of future projects includes full topology support, raster support, networks and routing, three dimensional surfaces,
curves and splines and other features. Ask us about consulting services and implementing new features.
Case Studies
Learn how PostGIS is being used around the world.
MADEIRA GPS, a company that started in 2005, with a simple project in mind: Deliver PDA-based navigation, with autorouting, for Madeira Island's tourism.
Sistema de Información Territorial Estatal en Línea, México
SITEL, a project hosting a spatial data infrastructure, allows various government agencies to share data to be included in their own projects as health, security, urban furniture or mobility. Today, they've integrated over 1,910 vectorial layers plus another 70+ raster files, provided through PostGIS and WMS/WFS/WCS services with Mapserver.
North Dakota State Water Commission
The North Dakota State Water Commission manages all their hydrological and spatial data inside PostgreSQL and PostGIS. Five years ago, they were using only proprietary software, now they are using mostly open source.