interp1()

Core Math

interp1() is a MATLAB®-compatible core math function for 1-d interpolation. methods: 'linear' (default), 'nearest', 'cubic', 'spline'. returns nan for query points outside the data range. Run it online in your browser with SimLab — free, no install, no license required.

1-D interpolation. Methods: 'linear' (default), 'nearest', 'cubic', 'spline'. Returns NaN for query points outside the data range.

▶ Try interp1() in SimLab — Free

Syntax

interp1(x, y, xq)

interp1(x, y, xq, 'linear')

interp1(x, y, xq, 'nearest')

interp1(x, y, xq, 'spline')

Examples — run interp1() in your browser

interp1([0, 1, 2], [0, 2, 4], 0.5)

▶ Run

interp1([0, 1, 2, 3], [0, 1, 4, 9], 1.5, 'spline')

▶ Run

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Frequently Asked Questions about interp1()

Is the interp1() 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 interp1() and 510+ other MATLAB®-compatible function references at simulations4all.com/simlab.

Do I need to install MATLAB to use interp1()?

No. SimLab’s core parser, workspace state, and most functions run locally in your browser. The interp1() function requires no MATLAB® license or desktop software download.

What does interp1() do?

1-D interpolation. Methods: 'linear' (default), 'nearest', 'cubic', 'spline'. Returns NaN for query points outside the data range. It is a MATLAB®-compatible core math function available in SimLab with the same calling syntax as MATLAB® — typically: interp1(x, y, xq).

Can I run interp1() in my browser?

Yes. Open SimLab at simulations4all.com/simlab, write or paste code that calls interp1(), 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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