I want to split a polygon layer manually using the Split tool in QGIS however I'm getting an error

no feature slit done: The geometry is invalid. Please repair before trying to split.

I have checked the geometry using Vector-Geometry Tools-Check Geometry Validity and it reports 0 errors encountered.

I have tried creating a new simple multi-polygon layer and split works as suggested.

I can split the other polygons in this same layer, just not the one I'm interested in.

Any ideas for what else I can try?

closed as off-topic by underdark Dec 30 '16 at 20:55

This question appears to be off-topic. The users who voted to close gave this specific reason:

  • "This problem cannot or can no longer be reproduced. Changes to the system or to the asker's circumstances may have rendered the question obsolete, or the question does not include a procedure to enable potential answerers to reproduce the same symptoms. Such questions are off-topic as they are unlikely to help future readers, but editing them to include more details can lead to re-opening." – underdark
If this question can be reworded to fit the rules in the help center, please edit the question.

  • 1
    It might help if you could paste the polygon and the splitting line as WKT. – user30184 May 11 '16 at 18:11

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