How to use findpeaks function to give me the peak maxima within a particular length of time? How to find slopes of peaks?
5 views (last 30 days)
Show older comments
I have a plot of data (voltage on y axis, time in miliseconds on x axis). I want to look at the positive peaks on my data within the first 20 miliseconds. How can I use the findpeaks function to constrain it to finding peaks within that time span, and how can I have it return the exact times of those peaks, rather than the indices?
An additional question is, how can I find the slopes of the peaks within this time span?
I'm attaching my plot below:
![Capture.PNG](https://www.mathworks.com/matlabcentral/answers/uploaded_files/244673/Capture.png)
0 Comments
Answers (1)
dpb
on 24 Oct 2019
The first Q? is you just pass the portion of the time series that encompasses whatever time span you wish -- how many points that is is dependent upon the sample rate -- N=T/dt
The second is described in the doc for findpeaks -- you can return the position of the peaks by passing the sample rate; the locations are converted to the units of the input based on that value.
The last I have no idea what a slope for a peak would be.
0 Comments
See Also
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!