ST_AddIsoNode
Name
ST_AddIsoNode — Adds an isolated node to a face in a topology and returns the nodeid of the new node. If face is null, the node is still created.
Synopsis
integer
ST_AddIsoNode
(
varchar
atopology
, integer
aface
, geometry
apoint
)
;
Description
Adds an isolated node with point location
apoint
to an existing face with faceid
aface
to a topology
atopology
and returns the nodeid of the new node.
If the spatial reference system (srid) of the point geometry is not the same as the topology, the
apoint
is not a point geometry, the point is null, or the point intersects an existing edge
(even at the boundaries) then an exception is thrown. If the point already exists as a node, an exception is thrown.
If
aface
is not null and the
apoint
is not within the face, then an exception is thrown.
Availability: 1.1
This method implements the SQL/MM specification.
SQL-MM: Topo-Net Routines: X+1.3.1