MATLAB: How to mark local peak values of a signal an count them? Matlab GUI

countdrawguimarkmatlab guipeak value

I have a signal and after several operations in matlab gui, i get this signal:

But i want to mark it's peak values like this (and also count them):

What is the code to mark and count the peak values of this kind signal? Thanks in advance!!

Best Answer

try this one?

http://www.mathworks.se/help/signal/ref/findpeaks.html

if you end up marking to many peaks, try playing around with

'MINPEAKDISTANCE' , 'THRESHOLD' and 'MINPEAKHEIGHT'

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MATLAB: Correlation between two row matrices

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MATLAB: Mark the peak of a graph

[Peak, PeakIdx] = findpeaks(Power,Resistance);
findpeaks(power,Resistance)  
hold on  
grid on  
ylabel ('Power (mW)')  
xlabel ('Resistance (\Omega)')  
title ('Power vs Resistance')  
text(Resistance(PeakIdx), Peak, sprintf('Peak = %6.3f (mW)', Peak))

Best Answer

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