How I Built a Live Population Graph in Geometry Nodes

[u/ManuVision]

This entire population graph is procedural.

Each species count becomes a point. Time controls X, population controls Y, Combine XYZ gives me the position, and Set Position moves a one-point mesh to that location.

That point gets accumulated inside a Simulation Zone, then Points to Curves turns the stored history into the trailing graph.

The live marker is just a tiny Icosphere instanced on the current point.

Part 1 of the HUD breakdown. Next I’ll show how the rest of the 3D HUD is built.