Fixed #25654 -- Added the GEOSGeometry.unary_union property.

1 files changed, 15 insertions, 0 deletions

diff --git a/docs/ref/contrib/gis/geos.txt b/docs/ref/contrib/gis/geos.txt
index 7415acea97..fffaf61fe7 100644
--- a/docs/ref/contrib/gis/geos.txt
+++ b/docs/ref/contrib/gis/geos.txt
@@ -497,6 +497,21 @@ geometry is a point.
 Computes and returns a :class:`Point` guaranteed to be on the interior
 of this geometry.
 
+.. attribute:: GEOSGeometry.unary_union
+
+.. versionadded:: 1.10
+
+Computes the union of all the elements of this geometry.
+
+The result obeys the following contract:
+
+* Unioning a set of :class:`LineString`\s has the effect of fully noding and
+  dissolving the linework.
+
+* Unioning a set of :class:`Polygon`\s will always return a :class:`Polygon` or
+  :class:`MultiPolygon` geometry (unlike :meth:`GEOSGeometry.union`, which may
+  return geometries of lower dimension if a topology collapse occurs).
+
 Other Properties & Methods
 ~~~~~~~~~~~~~~~~~~~~~~~~~~