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I'm trying to create a procedural island, and I need to find the lowest instance on the z-axis with Geometry nodes. In order to start a curve from that point.

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  • $\begingroup$ Did you also create the instances with Geometry Nodes? I mean: Do you have access to the points used for instantiation? $\endgroup$
    – quellenform
    Dec 21, 2022 at 15:43
  • $\begingroup$ Yes, the instances were created with Geometry Nodes. $\endgroup$
    – Luke
    Dec 21, 2022 at 15:45

1 Answer 1

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If the points you use for instantiation are available, then you can solve it like this:

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Here I use the node Attribute Statistics to determine the lowest value for the Z-axis of all points.

By a subsequent comparison with the Z-positions of the points, the lowest point is marked and is available to you as a selection.

You can then use this selection, for example, to filter out the individual point with Delete Geometry or Separate Geometry.

In any case, you have several possibilities to process this information. But unfortunately you didn't give away anything specific.

Therefore, if something is unclear, I ask you to complete your question accordingly with further information.


(Blender 3.2+)

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    $\begingroup$ I knew it had something to do with the "min" on the "Attribute Statistics". That works perfectly for my needs. Thanks. $\endgroup$
    – Luke
    Dec 21, 2022 at 16:09

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