I have been using the convex hull tool to create MCPs for various layers (containing location points). For some reason, this layer is not looking like the others and I can't figure out why. It's as if it isn't including all the features and is thus producing a shape not at all representative of the actual spread of points. I have checked the features and found no noticeable errors and I have even tried manually selecting all the features and using the "use selected features only" option when running the convex hull - this hasn't worked.

Am I missing something super basic that is messing up my MCP? I'm using QGIS version 3.1.

Convex hull MCP not including all points

  • 1
    Can you share your data? Feb 15, 2022 at 10:12
  • Perhaps you should try concave hull instead.
    – Gery
    Feb 15, 2022 at 18:08
  • @KadirŞahbaz I'm afraid don't know how
    – AJ Shiron
    Feb 16, 2022 at 1:31
  • @Gery okay, would you be able to tell/show me how to do that (i'm a bit of a qgis newbie)
    – AJ Shiron
    Feb 16, 2022 at 1:32
  • @AJShiron in QGIS go to Processes -> Toolbox and in the search box type "concave", it should appear under the tab "Vectorial geometry"
    – Gery
    Feb 16, 2022 at 3:20

1 Answer 1


I am getting an error for Convex Hull in QGIS 3.16. Try using the minimum bounding geometry tool from the Processing toolbox. Minimum bounding geometry has an option for generating a convex hull. This worked just fine.

Consider submitting a bug report to QGIS.

  • This is the method I used and it worked fine for all my other layers but for some reason it looks wacky for this one
    – AJ Shiron
    Feb 15, 2022 at 6:16
  • 1
    QGIS 3.16.x is EOL (END OF LIFE), so there is no point in reporting the bug.
    – pigreco
    Feb 15, 2022 at 8:04
  • @pigreco 3.16.16 is the current long term release version
    – JGH
    Feb 15, 2022 at 14:15
  • 1
    @JHG true, but until 02/18/2022
    – pigreco
    Feb 15, 2022 at 14:51

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