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Selection Portions of a Plot

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T
T on 18 Oct 2012
Suppose I have this function with multiple peaks that ranges from time = 2000 s to time = 7000 s.
Suppose there are five peaks and they are seperated evenly apart.
Suppose I want to pick the third peak.
How would I do this in MATLAB?

Accepted Answer

Azzi Abdelmalek
Azzi Abdelmalek on 18 Oct 2012
Edited: Azzi Abdelmalek on 18 Oct 2012
t=0:0.1:30
y=sin(t)
[peaks,idx]=findpeaks(y)
%the third peak is
peaks(3)
  3 Comments
Azzi Abdelmalek
Azzi Abdelmalek on 18 Oct 2012
can you post your data using a link
Star Strider
Star Strider on 18 Oct 2012
The findpeaks function is part of the Signal Processing Toolbox.

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