Fixed #25974 -- Switched GIS docs to 4 spaces indentation.

.. class:: Feed

   In addition to methods provided by

   the :class:`django.contrib.syndication.views.Feed`

   base class, GeoDjango's ``Feed`` class provides

   the following overrides.  Note that these overrides may be done in multiple ways::

    In addition to methods provided by the

    :class:`django.contrib.syndication.views.Feed` base class, GeoDjango's

    ``Feed`` class provides the following overrides. Note that these overrides

    may be done in multiple ways::

        from django.contrib.gis.feeds import Feed

    .. method:: geometry(obj)

    Takes the object returned by ``get_object()`` and returns the *feed's*

   geometry.  Typically this is a ``GEOSGeometry`` instance, or can be a

   tuple to represent a point or a box.  For example::

    geometry. Typically this is a ``GEOSGeometry`` instance, or can be a tuple

    to represent a point or a box. For example::

        class ZipcodeFeed(Feed):

    .. method:: item_geometry(item)

   Set this to return the geometry for each *item* in the feed.  This

   can be a ``GEOSGeometry`` instance, or a tuple that represents a

   point coordinate or bounding box.  For example::

    Set this to return the geometry for each *item* in the feed. This can be a

    ``GEOSGeometry`` instance, or a tuple that represents a point coordinate or

    bounding box. For example::

        class ZipcodeFeed(Feed):

Example::

     >>> print(City.objects.filter(name__in=('Houston', 'Dallas')

     ...      ).aggregate(MakeLine('poly'))['poly__makeline']

    >>> qs = City.objects.filter(name__in=('Houston', 'Dallas')).aggregate(MakeLine('poly'))

    >>> print(qs['poly__makeline'])

    LINESTRING (-95.3631510000000020 29.7633739999999989, -96.8016109999999941 32.7820570000000018)

``Union``

.. note::

   On Linux platforms, it may be necessary to run the ``ldconfig``

   command after installing each library.  For example::

    On Linux platforms, it may be necessary to run the ``ldconfig`` command

    after installing each library. For example::

        $ sudo make install

        $ sudo ldconfig

    GDAL_LIBRARY_PATH = '/home/sue/local/lib/libgdal.so'

.. rubric:: Footnotes

.. [#] The datum shifting files are needed for converting data to and from

       certain projections.