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What's the most efficient way to create a mesh of flow paths/lines?

jacklonsdale
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Hi all,

 

I'm looking for the optimal way to create a 'mesh' of potential flow paths to use with the ShortestPathFinder. Currently I feed my workspace a polygon of interest, then to a point cloud of required spacing. Turn that into individual points and then connect them up in the 8 points of the compass using a NeighbourFinder/ListExploder/VertexCreator.

 

My query with this is at the end I have to use the Matcher to remove lots of geometric duplicates where point A has connected to point B, and point B has connected to point A. Line direction is irrelevant to this task so I was wondering if anyone has any ideas as to how I could optimise this process?

Best answer by geomancer

You only need the neighbors in the directions 0, 45, 90 and 135, this will get you all connecting lines once. Insert a ListElementFilter (from FME Hub) between the NeighborFinder and the ListExploder.

ListElementFilterDisclaimer: this is a solution with only a minor change to your current workflow, there may be better ways.

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geomancer
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  • geomancerEvangelist
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  • March 16, 2023

You only need the neighbors in the directions 0, 45, 90 and 135, this will get you all connecting lines once. Insert a ListElementFilter (from FME Hub) between the NeighborFinder and the ListExploder.

ListElementFilterDisclaimer: this is a solution with only a minor change to your current workflow, there may be better ways.

jacklonsdale
Contributor
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  • jacklonsdaleContributor
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  • March 16, 2023
geomancer wrote:

You only need the neighbors in the directions 0, 45, 90 and 135, this will get you all connecting lines once. Insert a ListElementFilter (from FME Hub) between the NeighborFinder and the ListExploder.

ListElementFilterDisclaimer: this is a solution with only a minor change to your current workflow, there may be better ways.

Perfect solution to my existing workflow - thanks!

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