accumarray()

Core Math

accumarray() is a MATLAB®-compatible core math function for accumulate values into an array using subscripts. elements of vals that share the same subscript in subs are combined (summed by default, or via the optional fun reduction handle). Run it online in your browser with SimLab — free, no install, no license required.

Accumulate values into an array using subscripts. Elements of vals that share the same subscript in subs are combined (summed by default, or via the optional fun reduction handle).

▶ Try accumarray() in SimLab — Free

Syntax

accumarray(subs, vals)

accumarray(subs, vals, sz)

accumarray(subs, vals, sz, fun)

Examples — run accumarray() in your browser

accumarray([1; 2; 1; 3], [10; 20; 30; 40])

▶ Run

accumarray([1; 1; 2], [1; 2; 3], [], @max)

▶ Run

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Frequently Asked Questions about accumarray()

Is the accumarray() function free to use in SimLab?

The browser workspace requires no MATLAB® license or installation. Connected features require network access and may have account, tier, availability, or usage limits. You can open accumarray() and 510+ other MATLAB®-compatible function references at simulations4all.com/simlab.

Do I need to install MATLAB to use accumarray()?

No. SimLab’s core parser, workspace state, and most functions run locally in your browser. The accumarray() function requires no MATLAB® license or desktop software download.

What does accumarray() do?

Accumulate values into an array using subscripts. Elements of vals that share the same subscript in subs are combined (summed by default, or via the optional fun reduction handle). It is a MATLAB®-compatible core math function available in SimLab with the same calling syntax as MATLAB® — typically: accumarray(subs, vals).

Can I run accumarray() in my browser?

Yes. Open SimLab at simulations4all.com/simlab, write or paste code that calls accumarray(), and run it. This function’s calculation runs locally in the browser. SimLab session analytics, sharing, feedback, and eligible acceleration have separate network boundaries.

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