PostGIS
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.
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