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Remove connecting thing areas from complex polygon.

wrijs
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  • wrijsContributor
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Hi there, I am working on a data clean up model. Many thin areas and remnants have been cleaned up but I can't figure out how to this last thing.

There are some thin areas that connect on both sides to a large and very complex polygon. (See image)

Does anyone have a suggestion for how to remove these type of areas? So only the thin parts have to be removed.

Best answer by takashi

Hi ​@wrijs ,

This could work depending on the condition.

  1. Snapper (Snapping Type: Segment Snapping) : Modify the boundary lines in the thin parts to completely collinear lines - a kind of self-intersection.
  2. GeometryValidator (Issue to Detect: Self-Intersections in 2D) : Detect and remove the collinear lines to repair the polygons.
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    crutledge
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    • crutledgeInfluencer
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    • May 13, 2025

    ​@wrijs Would one of the NeighbourFinder tools work in this case? If you know the minimum gap between the polys this should work. Or finding the Longest Edge.
     

     

    At your rest service ^B
    takashi
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    • takashiEvangelist
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    • May 13, 2025

    Hi ​@wrijs ,

    This could work depending on the condition.

    1. Snapper (Snapping Type: Segment Snapping) : Modify the boundary lines in the thin parts to completely collinear lines - a kind of self-intersection.
    2. GeometryValidator (Issue to Detect: Self-Intersections in 2D) : Detect and remove the collinear lines to repair the polygons.
    redgeographics
    crutledge
    raghavendrans
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    wrijs
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    • wrijsContributor
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    • May 13, 2025

    ​@takashi that worked perfectly, thank you

    crutledge
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