How can i display a list of maximum of a curve ?

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I have a curve Amplitude=f(frequency) and i want to know the abscissa of all maximums.
Please help me.

Accepted Answer

Antonio Aguirre
Antonio Aguirre on 14 Dec 2016
Edited: Antonio Aguirre on 14 Dec 2016
Try looking up the findpeaks() function.
Seems to take in a curve and find the peaks and output the location of those 'n' # of peaks.
your code should look something like this:
frequency = some matrix of frequencies;
[pks, locs] = findpeaks(Amplitude);
%if you want to see it is true
Your abscissa's that you are looking for would be essentially frequency(locs), where locs is the index number in the matrix 'frequency' that contains your independent variable (called frequency or x or abscissa) corresponding to your peaks.
Let me know if you have any questions.

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