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Question

Finding partially connected polygons within one layer


nogger
Contributor
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Hello guys,

Has anyone ever encountered the following problem:

 

I need to find such situations in my data. It’s not a typical gap between polygons and that is a problem for me. Let’s call it “partial gap”. Maybe someone already had similar problem and found a solution?

Thanks in advance!

Shapefile with this case:

 

2 replies

ctredinnick
Supporter
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  • Supporter
  • May 20, 2024

Attached is a workspace for how I would approach it

Basically looking for instances of outside corners of polygons that is some distance from the same in another polygon. How you resolve it once you’ve found them, not sure! 


nogger
Contributor
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  • Author
  • Contributor
  • May 21, 2024

Thank you @ctredinnick for your approach.

For the given data it works perfectly, however when I try it on bigger sample, the result is the same no matter what Maximum Distance I choose in NeighborFinder. There are also a lot of, let’s say false positives. If you could look at it again, I would be very grateful.

Bigger sample attached.

 


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