I was playing with the "Add polygon Feature" in QGIS. I ended up with some weird ugly polygon. How do I delete the polygon?

Weird polygon

  • 1
    FYI, all the green X's are places where the polygon boundary intersects itself, which is invalid geometry. If you create a polygon with self-intersections, it will cause lots of errors later.
    – csk
    Commented Nov 24, 2019 at 16:52
  • 1
    To understand rollback and de-duplication on this question see gis.meta.stackexchange.com/questions/5104/…
    – PolyGeo
    Commented Nov 24, 2019 at 21:37

1 Answer 1


Select your polygon you wish to delete enter image description here on the canvas or attribute table, then press the red trash bin enter image description here or alternatively delete key on your keyboard. Make sure editing mode is enabled enter image description here when doing this. Otherwise the red trash bin is greyed out.

  • I tried it, but without success. screencast-o-matic.com/watch/cqXZoyU4bS
    – kabouter
    Commented Nov 24, 2019 at 15:34
  • @kabouter Ah I see. You polygon already is deleted. Thats a graphical issue. I remember there were several questions about this here on GIS SE, but I cannot find them at the moment.
    – MrXsquared
    Commented Nov 24, 2019 at 15:41
  • @kabouter finally found at least one of them: gis.stackexchange.com/questions/339298/cant-delete-polygon/… If this does not fix your issue and you cannot find the other questions about this, I suggest to edit your question and include these details
    – MrXsquared
    Commented Nov 24, 2019 at 15:44

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