I am using QGIS 3.10.1, and I am trying to fix invalid geometry in a number of polygons.

This polygon (orange) surrounds a road, but also has a sliver going straight across. As a fairly new QGIS user, I don't know how to get rid of it - I have messed around with the Editing tools, but can't find anything that works. enter image description here

  • 1
    Have you tried v.clean? gis.stackexchange.com/questions/141753/… Jan 16, 2020 at 3:23
  • I haven't tried v.clean - I'm having trouble getting Grass up and running, and am overall intimidated by the documentation I've found so far. I was wondering if there is another way to do it, but maybe I just need to put more time into solving my Grass-related issues.
    – Laura
    Jan 16, 2020 at 13:35

1 Answer 1


I figured it out - under the Advanced Digitizing Tools, I activated the "Delete Part" tool and then clicked on the sliver. All fixed!

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