PostGIS is a spatial database extender for PostgreSQL object-relational database. It adds support for geographic objects allowing location queries to be run in SQL.
FROM city, superhero
WHERE ST_Contains(city.geom, superhero.geom)
AND city.name = 'Gotham';
In addition to basic location awareness, PostGIS offers many features rarely found in other competing spatial databases such as Oracle Locator/Spatial and SQL Server. Refer to PostGIS Feature List for more details.
Due to a number of bugs capable of crashing a back-end, we have released 2.1.8. If you are running an earlier version on a public site, we recommend that you update as soon as possible.
View all closed tickets for 2.1.8.
Due to a critical bug in GeoJSON ingestion we have made an early release of versions 2.0.7 and 2.1.7. If you are running an earlier version on a public site and accepting incoming GeoJSON, we recommend that you update as soon as possible.
View all closed tickets for 2.0.7.
The 2.1.6 release of PostGIS is now available.
The PostGIS development team is happy to release patch for PostGIS 2.1, the 2.1.6 release. As befits a patch release, the focus is on bugs, breakages, and performance issues. Users with large tables of points will want to priorize this patch, for substantial (~50%) disk space savings.
The last couple weeks have seen two interesting updates in the world of PostgreSQL “foreign data wrappers” (FDW). Foreign data wrappers allow you to access remote data inside your database, exactly like other tables. PostgreSQL ships with two example implementations, one for accessing text files, and the other for accessing remote PostgreSQL servers.
The two updates of interest to PostGIS users are:
Now you can access your PostGIS data without even going to the trouble of importing it first!
I’ve been asked this question in some shape or form at least 3 times, mostly from people puzzled why they get this error. The last iteration went something like this:
I can’t use
ST_AsPNG when doing something like
SELECT ST_AsPNG(rast) FROM sometable;
Gives error: Warning: pg_query(): Query failed: ERROR: rt_raster_to_gdal: Could not load the output GDAL driver.
The Institut Géographique National (IGN) is the national mapping agency for France, with 1800 employees and a mandate to collect, integrate, manage and distribute reference geographical information for the whole country.
Infoterra has been in the geospatial business for over 25 years, since its founding in 1980 as the UK National Remote Sensing Centre. In that time, NRSC grew, formed international partnerships with space agencies, expanded into aerial data collection, and was eventually privatized and re-named “Infoterra” in the late 1990s.