RunMat
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CategoryPlotting
GPUYes

bar — Render MATLAB-compatible bar charts.

bar(y) plots the values of y as vertical bars with MATLAB-compatible defaults. RunMat matches MATLAB's behaviour for 1-D inputs: categories are labelled 1,2,...,n, grid lines are enabled, and the current figure receives a descriptive title and axis labels.

How does the bar function behave in MATLAB / RunMat?

  • Inputs must be numeric vectors. Scalars produce a single bar; empty inputs raise MATLAB-style errors.
  • Single-precision gpuArray inputs stay on the device and stream directly into the shared renderer for zero-copy plotting when WebGPU is available. Other data gathers automatically.
  • Future work will add grouped/stacked variants; this initial builtin focuses on the common bar(y) form used throughout the standard library tests.

GPU residency

bar terminates fusion graphs. Single-precision gpuArray vectors reuse provider buffers via the shared WebGPU context; other precisions gather to the host before plotting.

Example of using bar in MATLAB / RunMat

values = [3 5 2 9];
bar(values)

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