Post GIS
What is PostGIS
PostGIS is an extension to the PostgreSQL object-relational database system that allows GIS (Geographic Information System) objects to be stored in the database. PostGIS does for PostgreSQL what Oracle Spatial does for Oracle, ArcSDE does for Microsoft SQL Server/Oracle.
Overview
- Features of PostGIS
- PostGIS as a part of PostgreSQL (Article)
- Tools that support PostGIS
- Gallery Collection of applications using PostGIS in the backend.
- PostgresqlCaseStudies
- PostGIS Wikipedia entry
Installation Guides
- Directions for PostGIS RPM Installation.
- Directions for PostGIS on Ubuntu.
Examples of Spatial SQL
- Find Nearby Features
- Find Overlapping Features
- Join Spatial and Non-Spatial Tables
- Overlay Geometries in one table with Geometries in another
- Find Features Inside a Particular Polygon
- Clean Invalid Polygon Topology
Extending PostGIS
- PostGIS EJB3 Integration
- PostgisTopology - to be moved somewhere else ;)
- Raster support
- PGCHIP - The GDAL Postgis driver for raster data - a corrected version can be found in current GDAL CVS
- WishList of features for the future
Newbie Common Problems and Questions
- function addgeometrycolumn("unknown", "unknown", integer, "unknown", integer) does not exist
- What is the measurement returned by ST_Distance?
- How to get distance measurement in meters
Extras
Summer of Code
Notes
Useful Additional PL/PGSQL Functions
Known issues/patches pending review
What is GEOS
GEOS is a C++ port of the JTS Topology Suite. It is used by PostGIS to implement Topological functions.
Wiki How-To
- Learn HowToUseWiki and learn about AddingPages.
- Use the SandBox page to experiment with Wiki pages.
- Please sign your name in RecentVisitors.
- See RecentChanges for the latest page additions and changes.
- Find out which pages are MostPopular.
- Read the ReleaseNotes
- Administer this Wiki in PhpWikiAdministration.
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