How can I find the peak values of a curve?
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Hi all!
So I have these curves which have several peaks. Can anyone please tell me how can I detect the peaks and put a value to those points? The attached picture is manually created -
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/1112925/image.png)
Any feedback from you will be highly appreciated! Thank you!
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Abderrahim. B
2022-8-31
Hi!
Demo:
randData = randi(10, 10, 5) ;
for ii = 1: length(randData(1,:))
plot(randData(:,ii))
findpeaks(randData(:,ii), "Annotate","peaks")
hold on
end
Hope this helps
2 个评论
Abderrahim. B
2022-8-31
You are welcome.
Try this:
randData = randi(10, 10, 3) ;
for ii = 1: length(randData(1,:))
% plot(randData(:,ii))
[pks,locs] = findpeaks(randData(:,ii), 'Annotate','peaks');
findpeaks(randData(:,ii))
text(locs-0.04,pks+0.4,split(num2str(pks')))
hold on
end
hold off
更多回答(1 个)
Cris LaPierre
2022-8-31
If you are using a live script, I suggest using the Find Local Extrema task. You can see an introduction to this tool in this recent live stream. It will allow you to interactively find the right settings to identify your peaks. If you prefer to do it programmatically, look into the findpeaks function.
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