+1
Hi,
I have a road network that I want to group on spatial basis. I want to group the roads on 3 valent or more junction on the basis of connectivity.
I have tried using TopologyBuilder and ListElementCounter to calculate the node valency, but not getting how to group them.
I have uploaded the data in the attachment.
Thanks.
+3
To look at this another way, it appears what is needed is instead to find lines that touch at their end points and there are no more than 2 lines touching each other at their end points, and to group them together.
This is the default behaviour of LineCombiner. This will create a List of line segments that touch each other at their end "Junction" points and the valency is no more than 2 line end points touching that Junction.
Sending the LIneCombiner output to a Counter will then put a "Group ID" integer against the groups of combined lines.
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