how to find duration of peak; starting and ending points
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Raheema Al Karim Damani
on 25 Feb 2020
I've used findpeaks to isolate the largest peak in my signal. I wanted some help in finding the duration of the peak aka the starting and ending points of this peak, so that I could calculate area under curve? Right now Im having to visually inspect and pick arbitrary points to define this start and end points.
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/273442/image.png)
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Star Strider
on 25 Feb 2020
Experiment with ths ischange function, and if you have the Signal Processing Toolbox, the findchangepts function.
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Alexis
on 9 Jul 2021
Edited: Alexis
on 9 Jul 2021
I had a similar issue, although I was working with biological signals. You could try the function I wrote to solve my problem: https://uk.mathworks.com/matlabcentral/fileexchange/81066-breathtimes?s_tid=srchtitle
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Lam Ha
on 9 Jun 2023
Hi, I'm doing my research and meet the same problems as you. Have you calculated the peak duration? Can you share to me how to calculate the peak duration? Thank you so much in advance
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