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[1.11.x] Clarified backend support of Area GIS function.

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Backport of 6052b185ca2b4310ea3d02ab61023d0d0fd9a2c2 from master
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Sergey Fedoseev 2017-03-22 18:53:48 +05:00 committed by Tim Graham
parent 6963564ecc
commit 02bc5563b8
1 changed files with 4 additions and 2 deletions
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docs/ref/contrib/gis/functions.txt
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@ -41,8 +41,10 @@ Measurement Relationships Operations Editors
`PostGIS <https://postgis.net/docs/ST_Area.html>`__, SpatiaLite `PostGIS <https://postgis.net/docs/ST_Area.html>`__, SpatiaLite
Accepts a single geographic field or expression and returns the area of the Accepts a single geographic field or expression and returns the area of the
field as an :class:`~django.contrib.gis.measure.Area` measure. On MySQL, a raw field as an :class:`~django.contrib.gis.measure.Area` measure.
float value is returned when the coordinates are geodetic.
MySQL and SpatiaLite without LWGEOM don't support area calculations on
geographic SRSes.
.. versionchanged:: 1.11 .. versionchanged:: 1.11