Tests whether two separate line geometries intersect at common vertices. If both geometries are 3D it also tests whether the heights at the vertices are equal.
If there are no points of intersection then the geometries are considered to pass the test. The optional third parameter can be set to false to indicate that the check on z values for 3D geometries should not be made.
Parameter 1 - a line geometry.
Parameter 2 - another line geometry.
Parameter 3 (Optional) - an optional Boolean value indicating whether or not to check z values at intersections (defaults to true) for 3D geometries.
Returns: a Boolean value, true if the geometries are noded and false otherwise. Returns null if either parameter is not a simple line or point geometry.