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Hi There,
I've got a question that seems to appear a fair bit within the forum but I have so far been unable to find a methodology that works for my case.
I'm attempting to identify water mains within a water distribution network that have accidentally been duplicated,incorrectly split and not removed,or more generally are errors that went unnoticed.What I think it boils down to is isolating where lines overlap exactly (Scenario B of attach image),where mains have been split and a segment wasn't retired/removed when (Scenario A),or where a segment was completely replaced the old segment wasn't removed or retired (Scenario C).*Orange segments below are the erroroneous segments I'm attempting to isolate.
From the forum posts I've read here there's a lot of talk of using the LineOnLineOverlayer which I have tried using.However,I'm don't want to report on valid intersects where mains are connected to each other.I've have some difficulty trying to weed these false positives out of my results.
I'm looking for some suggestions as to how I might be able to achieve this QA task.
Thanks,
Warren
Try the attached workspace,it uses the SpatialRelator to create a GroupBy for the CommonSegmentFinder to prevent self-matches.
commonsegment.fmw
Have you looked at the CommonSegmentFinder?
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