How do I find the local maxima of a vector?

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Doug Hull
Doug Hull on 18 Jan 2011
There does not seem to be a function for this.

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Accepted Answer

Doug Hull
Doug Hull on 18 Jan 2011
You can use the following one-line function to determine the indices of the local maxima.
function index = localmax(x)
index = find( diff( sign( diff([0; x(:); 0]) ) ) < 0 );
[from the MATLAB FAQ of Ancient Times]

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