3

I have yield data as point values, and I simply want to create the boundary around this layer. I have used the Minimum Bounding Geometry tool and selected Convex Hull to do this, however it maintains the corners as part of the polygon. Is there a way to automatically keep just the boundary of this file? Pictures below.

Here's the point file:

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Here's what Convex Hull gives me:

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And here's what I need to automate:

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9

There are different ways to create concave hulls in QGIS (= alpha shapes, look at Introduction to Alpha Shapes (pdf), K. Fischer 2000 and On the creation of concave hulls and the various ways of doing that.(alpha-shapes), in French, which I take the figures).

  • Concave Hull script in the processing toolbox, you can create holes

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You can also use

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With alphashape3D

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