Hi everyone, I found that if a line touches itself, if I use the vector overlay "clip" algorithm on that layer, the feature gets broken up into 3 pieces (I can tell by running it through the "multipart to singleparts" algorithm).
See the screenshot below of some example inputs, and I've attempted to attach the layers. If I run the line layer through "multipart to singleparts" it produces a layer with only one feature. But if I use the polygon to clip the line layer, and then run it through "multipart to singleparts" it gets split at the point where it touches itself, into three pieces. I haven't been able to find a tool for validating or repairing geometries that thinks there is a problem with the original geometry, so I think this is a bug with the clip algorithm. Should I file a ticket? Or should the original geometry be considered invalid, so I can't expect the algorithm to preserve it as a single feature? If that's the case do we need a better tool for validating or repairing geometries, which can identify geometries with this problem?). [image: image.png] Regards, Alister
<<attachment: Layers.zip>>
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