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version (2.51 KB) by Siyi Deng
find indices of local extrema (minina, maxima) and zero-crossings.


Updated 29 May 2009

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It's fully vectorized and pretty fast. Designed to be used for EMD/HHT algorithms.

Cite As

Siyi Deng (2020). findextrema (, MATLAB Central File Exchange. Retrieved .

Comments and Ratings (4)


very useful.

Eirik Børsheim

Easy and excellent function. Does not require additional toolboxes.

Fan D.Chen

This program is very helpful to me, so I have to say, thank you

Xin Xue

I need it.

MATLAB Release Compatibility
Created with R2008b
Compatible with any release
Platform Compatibility
Windows macOS Linux