matlab - Find local maximum value in the vector

Question

Somebody could help me. I use Matlab program.

Suppose, I have vector A,

A = [0 0 1 2 3 5 0 0 0 0 0 2 3 6 7 0 0 0 0 1 1 2 3 4 1]

I would like to get local maximum values and location from the vector A. So, the answer that I would like to get is following.

maxValue = 5, 7 and 4;

maxLocation = 6, 15 and 24;

thank you for your kind.

Answer 1

If you have the Signal Processing toolbox then findpeaks should be what you want:

[pks,locs] = findpeaks(A)

For future reference you should know that what you want to find are local maxima. Saying that you want to find the maximum value makes it seem as if you want the global maxima (which would be 7 in this case).