.. [#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.net/docs/using_postgis_dbmanagement.html#EWKB_EWKT>`_, PostGIS documentation at Ch. 4.1.2.
.. [#fnewkb] *See* `PostGIS EWKB, EWKT and Canonical Forms <https://postgis.net/docs/using_postgis_dbmanagement.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).
.. [#fndistsphere15] *See* `PostGIS documentation <http://postgis.net/docs/ST_DistanceSphere.html>`_ on ``ST_DistanceSphere``.
.. [#fndistsphere15] *See* `PostGIS documentation <https://postgis.net/docs/ST_DistanceSphere.html>`_ on ``ST_DistanceSphere``.
@@ -24,7 +24,7 @@ All examples in the reference below are given for geometry fields and inputs,
but the lookups can be used the same way with rasters on both sides. Whenever
a lookup doesn't support raster input, the input is automatically
converted to a geometry where necessary using the `ST_Polygon
<http://postgis.net/docs/RT_ST_Polygon.html>`_ function. See also the
<https://postgis.net/docs/RT_ST_Polygon.html>`_ function. See also the
:ref:`introduction to raster lookups <spatial-lookup-raster>`.
The database operators used by the lookups can be divided into three categories:
...
...
@@ -819,4 +819,4 @@ Example::
.. [#fnde9im] *See* `OpenGIS Simple Feature Specification For SQL <http://www.opengis.org/docs/99-049.pdf>`_, at Ch. 2.1.13.2, p. 2-13 (The Dimensionally Extended Nine-Intersection Model).
.. [#fnsdorelate] *See* `SDO_RELATE documentation <https://docs.oracle.com/database/121/SPATL/GUID-97C17C18-F05E-49B4-BE11-E89B972E2A02.htm#SPATL1039>`_, from the Oracle Spatial and Graph Developer's Guide.
.. [#fncovers] For an explanation of this routine, read `Quirks of the "Contains" Spatial Predicate <http://lin-ear-th-inking.blogspot.com/2007/06/subtleties-of-ogc-covers-spatial.html>`_ by Martin Davis (a PostGIS developer).
.. [#fncontainsproperly] Refer to the PostGIS ``ST_ContainsProperly`` `documentation <http://postgis.net/docs/ST_ContainsProperly.html>`_ for more details.
.. [#fncontainsproperly] Refer to the PostGIS ``ST_ContainsProperly`` `documentation <https://postgis.net/docs/ST_ContainsProperly.html>`_ for more details.
@@ -1068,7 +1068,7 @@ include the SRID value (in other words, EWKB).
'POINT (1.4 1.7)'
.. rubric:: Footnotes
.. [#fnogc] *See* `PostGIS EWKB, EWKT and Canonical Forms <http://postgis.net/docs/using_postgis_dbmanagement.html#EWKB_EWKT>`_, PostGIS documentation at Ch. 4.1.2.
.. [#fnogc] *See* `PostGIS EWKB, EWKT and Canonical Forms <https://postgis.net/docs/using_postgis_dbmanagement.html#EWKB_EWKT>`_, PostGIS documentation at Ch. 4.1.2.
@@ -250,4 +250,4 @@ determining `when to use geography data type over geometry data type
.. [#fnsrid] Typically, SRID integer corresponds to an EPSG (`European Petroleum Survey Group <http://www.epsg.org>`_) identifier. However, it may also be associated with custom projections defined in spatial database's spatial reference systems table.
.. [#fnthematic] Terry A. Slocum, Robert B. McMaster, Fritz C. Kessler, & Hugh H. Howard, *Thematic Cartography and Geographic Visualization* (Prentice Hall, 2nd edition), at Ch. 7.1.3.
.. [#fndist] This limitation does not apply to PostGIS.
.. [#fngeography] Please refer to the `PostGIS Geography Type <http://postgis.net/docs/using_postgis_dbmanagement.html#PostGIS_Geography>`_ documentation for more details.
.. [#fngeography] Please refer to the `PostGIS Geography Type <https://postgis.net/docs/using_postgis_dbmanagement.html#PostGIS_Geography>`_ documentation for more details.
