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Fixed #30996 -- Added AsWKB and AsWKT GIS functions.

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Sergey Fedoseev 2019-11-15 23:37:43 +05:00 • committed by Mariusz Felisiak
parent 8929afb8ec
commit a5855c8f0f
8 changed files with 89 additions and 4 deletions
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2
docs/ref/contrib/gis/db-api.txt
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@ -364,6 +364,8 @@ Function PostGIS Oracle MariaDB MySQL
:class:`AsGML` X X X
:class:`AsKML` X X
:class:`AsSVG` X X
:class:`AsWKB` X X X X X
:class:`AsWKT` X X X X X
:class:`Azimuth` X X (LWGEOM)
:class:`BoundingCircle` X X
:class:`Centroid` X X X X X

48
docs/ref/contrib/gis/functions.txt
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@ -27,9 +27,9 @@ Measurement Relationships Operations Edi
:class:`Distance` :class:`BoundingCircle` :class:`Intersection` :class:`MakeValid` :class:`AsGML` :class:`MemSize`
:class:`GeometryDistance` :class:`Centroid` :class:`SymDifference` :class:`Reverse` :class:`AsKML` :class:`NumGeometries`
:class:`Length` :class:`Envelope` :class:`Union` :class:`Scale` :class:`AsSVG` :class:`NumPoints`
:class:`Perimeter` :class:`LineLocatePoint` :class:`SnapToGrid` :class:`GeoHash`
.. :class:`PointOnSurface` :class:`Transform`
.. :class:`Translate`
:class:`Perimeter` :class:`LineLocatePoint` :class:`SnapToGrid` :class:`AsWKB`
.. :class:`PointOnSurface` :class:`Transform` :class:`AsWKT`
.. :class:`Translate` :class:`GeoHash`
========================= ======================== ====================== ======================= ================== =====================
``Area``
@ -168,6 +168,48 @@ Keyword Argument Description
__ https://www.w3.org/Graphics/SVG/
``AsWKB``
=========
.. class:: AsWKB(expression, **extra)
.. versionadded:: 3.1
*Availability*: MariaDB, `MySQL
<https://dev.mysql.com/doc/refman/en/gis-format-conversion-functions.html#function_st-asbinary>`__,
Oracle, `PostGIS <https://postgis.net/docs/ST_AsBinary.html>`__, SpatiaLite
Accepts a single geographic field or expression and returns a `Well-known
binary (WKB)`__ representation of the geometry.
Example::
>>> bytes(City.objects.annotate(wkb=AsWKB('point')).get(name='Chelyabinsk').wkb)
b'\x01\x01\x00\x00\x00]3\xf9f\x9b\x91K@\x00X\x1d9\xd2\xb9N@'
__ https://en.wikipedia.org/wiki/Well-known_text_representation_of_geometry#Well-known_binary
``AsWKT``
=========
.. class:: AsWKT(expression, **extra)
.. versionadded:: 3.1
*Availability*: MariaDB, `MySQL
<https://dev.mysql.com/doc/refman/en/gis-format-conversion-functions.html#function_st-astext>`__,
Oracle, `PostGIS <https://postgis.net/docs/ST_AsText.html>`__, SpatiaLite
Accepts a single geographic field or expression and returns a `Well-known text
(WKT)`__ representation of the geometry.
Example::
>>> City.objects.annotate(wkt=AsWKT('point')).get(name='Chelyabinsk').wkt
'POINT (55.137555 61.451728)'
__ https://en.wikipedia.org/wiki/Well-known_text_representation_of_geometry
``Azimuth``
===========