Fixed -- Added DE-9IM link in GEOS docs.
@@ -410,7 +410,7 @@ return a boolean.
The ``covers`` predicate has the following equivalent definitions:
* Every point of the other geometry is a point of this geometry.
- * The DE-9IM Intersection Matrix for the two geometries is
+ * The `DE-9IM`_ Intersection Matrix for the two geometries is
``T*****FF*``, ``*T****FF*``, ``***T**FF*``, or ``****T*FF*``.
If either geometry is empty, returns ``False``.
@@ -423,6 +423,8 @@ return a boolean.
added benefit, ``covers()`` is more amenable to optimization and hence
should outperform :meth:`~GEOSGeometry.contains`.
+ .. _DE-9IM: https://en.wikipedia.org/wiki/DE-9IM
+
.. method:: GEOSGeometry.crosses(other)
Returns ``True`` if the DE-9IM intersection matrix for the two Geometries
