PostGIS

PostGIS
Developer(s) Refractions Research, Paul Ramsey, Dave Blasby, Kevin Neufeld, Mark Cave-Ayland, Regina Obe, Sandro Santilli, Olivier Courtin, Nicklas Avén, Bborie Park, Pierre Racine, Jeff Lounsbury, Chris Hodgson, Jorge Arévalo, Mateusz Loskot, Norman Vine, Carl Anderson, Ralph Mason, Klaus Foerster, Bruno Wolff III, Markus Schaber
Initial release April 19, 2001 (2001-04-19)
Stable release
2.3.1 / November 28, 2016 (2016-11-28)
Repository github.com/postgis/postgis/
Operating system Linux, Windows, Mac OS X, POSIX-compliant systems
Type Geographic information system
License GNU General Public License (version 2 or later)
Website http://postgis.net/

PostGIS (/ˈpoʊstdʒɪs/ POST-jis) is an open source software program that adds support for geographic objects to the PostgreSQL object-relational database. PostGIS follows the Simple Features for SQL specification from the Open Geospatial Consortium (OGC).

History

Refractions Research released the first version of PostGIS in 2001 under the GNU General Public License. After 6 release candidates, a stable "1.0" version followed on April 19, 2005.

In 2006 the OGC registered PostGIS as "implement[ing] the specified standard" for "Simple Features for SQL".[1]

Features

The PostGIS implementation is based on "light-weight" geometries and indexes optimized to reduce disk and memory footprint. Using light-weight geometries helps servers increase the amount of data migrated up from physical disk storage into RAM, improving query performance substantially.

PostGIS is registered as "implements the specified standard" for "Simple Features for SQL" by the OGC.[2] PostGIS has not been certified as compliant by the OGC. For the OGC's definition of compliant, see What does "Compliant" mean?.

Users

There are a large number of software products that can use PostGIS as a database backend, including:

See also

References

  1. ↑ PostGIS History
  2. ↑ OGC Implementing Product Details Open Geospatial Consortium
  3. ↑ http://www.gisgraphy.com/
  4. ↑ http://mapsurfernet.com/
  5. ↑ http://www.nominatim.org/
  6. ↑ https://www.mapbox.com/tilemill/

Tutorials

Documentation

Other

This article is issued from Wikipedia - version of the 12/2/2016. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.