Changes between Version 2 and Version 3 of UsersWikiFeaturesOfPostgis
- Timestamp:
- 04/13/09 15:59:45 (16 years ago)
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UsersWikiFeaturesOfPostgis
v2 v3 18 18 * '''OGC SQL functions:''' standards for managing spatial tables using SQL language 19 19 * [http://www.opengeospatial.org/standards/sfs SQL for Simple Features at OGC] 20 * [http://postgis.refractions.net/doc s/ch04.html#id3008736Discussion of Compliance in PostGIS manual]21 * [http://postgis.refractions.net/doc s/ch06.html#id3011852Direct Link to Functions in PostGIS manual]20 * [http://postgis.refractions.net/documentation/manual-svn/ch04.html#id2597710 Discussion of Compliance in PostGIS manual] 21 * [http://postgis.refractions.net/documentation/manual-svn/ch07.html Direct Link to Functions in PostGIS manual] 22 22 23 23 == PostGIS extends support for geometry types: == 24 24 * '''EWKB, EWKT and Canonical Forms''' 25 25 * PostGIS adds support for embedding the SRID (projection information) and for 3 and 4D geometries with Z and M values, respectively. 26 * [http://postgis.refractions.net/doc s/ch04.html#id3008491EWKT and EWKT in PostGIS manual]26 * [http://postgis.refractions.net/documentation/manual-svn/ch04.html#id2597816 EWKT and EWKT in PostGIS manual] 27 27 * [http://en.wikipedia.org/wiki/Extended_Well-known_text EWKT on Wikipedia] 28 28 * '''Other Types'''