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CategoryPlotting
GPUYes

scatter3 — Create MATLAB-compatible 3-D scatter plots.

scatter3(x, y, z) plots points in 3-D space using MATLAB-compatible defaults. Each input must contain the same number of elements; row and column vectors are both accepted.

How does the scatter3 function behave in MATLAB / RunMat?

  • Inputs may be real doubles, single-precision tensors, or gathered gpuArray values. Complex data currently raises an error matching MATLAB.
  • Points inherit MATLAB’s default styling: blue markers with mild transparency. Future work will add size/color arguments, but existing scripts using the basic call form work today.
  • Fusion graphs terminate at scatter3, and gpuArray inputs are gathered so the renderer can access dense host memory or a shared WebGPU buffer depending on the build.

GPU residency

scatter3 gathers GPU tensors before plotting today. The new shared-device renderer keeps future implementations zero-copy. Until that lands, expect the builtin to behave like MATLAB: data moves to the host, rendering completes, and execution returns immediately.

Example of using scatter3 in MATLAB / RunMat

t = linspace(0, 4*pi, 200);
scatter3(cos(t), sin(t), t)

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