Get absolute peak location in a vector in MATLAB

Question

Suppose I have the A matrix like this:

A =    [0,0,0,0,0,0,106,10,14,20,20,23,27,26,28,28,28,23,28,28,21,18,106,14,12,
17,16,15,22,19,20,18,21,23,23,18,17,15,106         


        

Answer 1

This does not give you all the peaks, but it gives you the maximum value in the set:

max_locations = find(A==max(A))

If you want to find the peaks, use the findpeaks function:

[peakVal,peakLoc]= findpeaks(A);

Answer 2

If you want maximum 5 or 10 peaks, use the following

[peakVal,peakLoc]= findpeaks(A,'sort','descend');