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FME Clip Ignoring Fully Overlapping Polygons — How to Process All Features?

  • November 17, 2025
  • 1 reply
  • 81 views
francisco_1988
Contributor
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We have a polygon shapefile in which features overlap because the data is self-reported. During our analysis, we noticed that when a feature is 100% overlapped by another, it is not considered in the clip process with another dataset. However, we want all features—even those that are fully overlapped—to be taken into account when performing the clip. What configuration or procedure should we use to ensure this behavior?

1 reply

DanAtSafe
Safer
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  • DanAtSafeSafer
  • Safer
  • November 17, 2025

Hi ​@francisco_1988 I suspect that the clipper and clippee aren’t exactly the same but they’re close enough to cause a geometry error. The Tolerance for Vector Candidates will default to Automatic.  You can see the actual calculated value in the log window/file.  Try adjusting the tolerance slightly and see if that causes it to clip the nearly identical polygon. If you can’t get it to work then please submit a ticket via https://support.safe.com/hc/en-us/p/Support  Thanks!

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