diff options
| author | Claude Paroz <claude@2xlibre.net> | 2014-11-13 14:38:19 +0100 |
|---|---|---|
| committer | Claude Paroz <claude@2xlibre.net> | 2014-11-13 14:38:19 +0100 |
| commit | e541bbd0dc36a61b6eb148dc4694d9638d7bd5f2 (patch) | |
| tree | 922c53e986c72caf747b1d3744cd4c21ab84d3f1 /docs/ref/contrib/gis/model-api.txt | |
| parent | 7fd1f3a645fda76c517be17f373ced1e69c2ae7b (diff) | |
Removed doc reference to pre-1.5 PostGIS
Diffstat (limited to 'docs/ref/contrib/gis/model-api.txt')
| -rw-r--r-- | docs/ref/contrib/gis/model-api.txt | 15 |
1 files changed, 7 insertions, 8 deletions
diff --git a/docs/ref/contrib/gis/model-api.txt b/docs/ref/contrib/gis/model-api.txt index 2f4a27bc64..2c41b368e0 100644 --- a/docs/ref/contrib/gis/model-api.txt +++ b/docs/ref/contrib/gis/model-api.txt @@ -107,10 +107,10 @@ a flat surface is a straight line, the shortest path between two points on a cur surface (such as the earth) is an *arc* of a `great circle`__. [#fnthematic]_ Thus, additional computation is required to obtain distances in planar units (e.g., kilometers and miles). Using a geographic coordinate system may introduce -complications for the developer later on. For example, PostGIS versions 1.4 -and below do not have the capability to perform distance calculations between -non-point geometries using geographic coordinate systems, e.g., constructing a -query to find all points within 5 miles of a county boundary stored as WGS84. +complications for the developer later on. For example, Spatialite does not have +the capability to perform distance calculations between geometries using +geographic coordinate systems, e.g. constructing a query to find all points +within 5 miles of a county boundary stored as WGS84. [#fndist]_ Portions of the earth's surface may projected onto a two-dimensional, or @@ -124,10 +124,9 @@ calculations. .. note:: If you wish to perform arbitrary distance queries using non-point - geometries in WGS84, consider upgrading to PostGIS 1.5. For - better performance, enable the :attr:`GeometryField.geography` - keyword so that :ref:`geography database type <geography-type>` - is used instead. + geometries in WGS84 in PostGIS and you want decent performance, enable the + :attr:`GeometryField.geography` keyword so that :ref:`geography database + type <geography-type>` is used instead. Additional Resources: |
