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

More Core Math Functions

Browse other free, MATLAB®-compatible core math functions in SimLab:

linspace()logspace()randn()rand()eye()zeros()

Browse all 510+ SimLab functions →

Frequently Asked Questions about accumarray()

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

Yes. SimLab is 100% free — no signup, no license, and no usage limits. You can run accumarray() and 510+ other MATLAB®-compatible functions directly in your browser at simulations4all.com/simlab.

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

No. SimLab runs entirely in your web browser with zero installation. The accumarray() function works without any MATLAB® license or 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. Execution happens locally in your browser — no data leaves your machine.

Try SimLab — MATLAB®-compatible, free, in your browser

510+ functions. Runs in your browser. No install. No license.

Open SimLab

MATLAB® is a registered trademark of The MathWorks, Inc. SimLab is an independent project by Simulations4All and is not affiliated with, endorsed by, or sponsored by The MathWorks, Inc.