I have serveral objects with a "thin" geometry which are connected by a very slim passage.

enter image description here

My goal is to remove this connection so the object is devided into two separeted features. My idea to achieve this was to first apply a negativ buffer with -0.5 m and afterwards a postive buffer with +0.5 m again so the object gets "reshaped" but the splitting line from the buffer keeps preserved.

This is how the geometry looks with the negaitv buffer

enter image description here

But when I try to reconstruct the original geometry by using a positive buffer with the negativ buffer as the input it does not work. The original geometry is not rebuild but it just gets some "round corners".

enter image description here

I'm using ArcGIS Pro 3.0.3. In the buffer function I tried both methods, "PLANAR" and "GEODESIC" but nothing works unfortunately.

Has anyone have an idea how to make it work?

  • With QGIS, this would be possible using join-style bevel or miter
    – Babel
    Commented Jan 23, 2023 at 9:21
  • Just speculating but if you run the Integrate tool and try different tolerances (use copies as inputs since the tool changes the input instead of producing a new layer) these may produce "bow tie" polygons which aren't usually desirable. Then you might run the multipart to singlepart to split them. Check/repair your geometry after.
    – John
    Commented Jan 23, 2023 at 11:46


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