I'm attempting to insert a node into a PolyLine object, which represents a
road. After insert, the road needs to be split into one leading from the
original start node to the new node, and another leading from the new node
to the original end node.
I have established the X and Y coordinates for the node, but I'm having
problems coming up with a way to work out which 'number' the new node will
be, and so I'm unable to use the Alter function.
When I wanted to insert into a Line object ('line 1'), it wasn't a problem.
Line 2 led from the original start node to the new one, Line 3 led from the
new one to the original end node. Short of replacing the original PolyLine
with two Line objects (not really feasible), I can't think of a way around
this.
Any ideas gratefully received.
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