API reference

Geography types

Point	A geography type that represents a single coordinate with lat,lon or x,y,z values.
LineString	A geography type composed of one or more arc segments.
Polygon	A geography type representing an area that is enclosed by a linear ring.

Geography properties

GeographyType	The enumeration of Geography types
is_geography(obj)	Returns True if the object is a Geography, False otherwise.
get_dimensions(geography)	Returns the inherent dimensionality of a geography.
get_type_id(geography)	Returns the type ID of a geography.

Geography creation

is_prepared(geography)	Returns True if the geography object is "prepared", False otherwise.
prepare(geography)	Prepare a geography, improving performance of other operations.
destroy_prepared(geography)	Destroy the prepared part of a geography, freeing up memory.

Predicates

equals(a, b)	Returns True if A and B are spatially equal.
intersects(a, b)	Returns True if A and B share any portion of space.
contains(a, b)	Returns True if B is completely inside A.
within(a, b)	Returns True if A is completely inside B.
disjoint(a, b)	Returns True if A boundaries and interior does not intersect at all with those of B.