|
|
@@ -164,15 +164,6 @@ it may be expressed in any units (the SQL generated will use units
|
|
|
converted to those of the field); otherwise, numeric parameters are assumed
|
|
|
to be in the units of the field.
|
|
|
|
|
|
-.. note::
|
|
|
-
|
|
|
- For users of PostGIS 1.4 and below, the routine ``ST_Distance_Sphere``
|
|
|
- is used by default for calculating distances on geographic coordinate systems
|
|
|
- (e.g., WGS84) -- which may only be called with point geometries [#fndistsphere14]_.
|
|
|
- Thus, geographic distance lookups on traditional PostGIS geometry columns are
|
|
|
- only allowed on :class:`PointField` model fields using a point for the
|
|
|
- geometry parameter.
|
|
|
-
|
|
|
.. note::
|
|
|
|
|
|
In PostGIS 1.5, ``ST_Distance_Sphere`` does *not* limit the geometry types
|
|
|
@@ -311,7 +302,6 @@ Method PostGIS Oracle SpatiaLite
|
|
|
.. [#fnwkt] *See* Open Geospatial Consortium, Inc., `OpenGIS Simple Feature Specification For SQL <http://www.opengis.org/docs/99-049.pdf>`_, Document 99-049 (May 5, 1999), at Ch. 3.2.5, p. 3-11 (SQL Textual Representation of Geometry).
|
|
|
.. [#fnewkb] *See* `PostGIS EWKB, EWKT and Canonical Forms <http://postgis.refractions.net/documentation/manual-1.5/ch04.html#EWKB_EWKT>`_, PostGIS documentation at Ch. 4.1.2.
|
|
|
.. [#fngeojson] *See* Howard Butler, Martin Daly, Allan Doyle, Tim Schaub, & Christopher Schmidt, `The GeoJSON Format Specification <http://geojson.org/geojson-spec.html>`_, Revision 1.0 (June 16, 2008).
|
|
|
-.. [#fndistsphere14] *See* `PostGIS 1.4 documentation <http://postgis.refractions.net/documentation/manual-1.4/ST_Distance_Sphere.html>`_ on ``ST_distance_sphere``.
|
|
|
.. [#fndistsphere15] *See* `PostGIS 1.5 documentation <http://postgis.refractions.net/documentation/manual-1.5/ST_Distance_Sphere.html>`_ on ``ST_distance_sphere``.
|
|
|
.. [#fnmysqlidx] *See* `Creating Spatial Indexes <http://dev.mysql.com/doc/refman/5.1/en/creating-spatial-indexes.html>`_
|
|
|
in the MySQL 5.1 Reference Manual:
|
Tim Graham