How to find largest Peaks Values of signal and Save Corresponding X axis and Y Axis Values in MATLAB
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Hello, I have the following Dataset in which first column shows the X-axis and 2nd Column shows the Y-axis.
I want to find Peak Value as shown in the image below and
Save the X and Y axis Values Corresponding Peak. Y axis Values as Amplitude and X axis values as Time
After that I want to subtract 2nd peak from 1st peak, and 4th peak from 3rd Peak.
It should be general for example if i got 6 peaks then 2nd subtract from 1st then 4th from 3rd and 6th from 5th
How can i do that in MATLAB
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/1302000/image.png)
1 commentaire
Rik
le 21 Fév 2023
Just in case you decide to edit this one away as well: I just made it pointless by attaching the original file to this comment.
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Star Strider
le 21 Fév 2023
Modifié(e) : Star Strider
le 21 Fév 2023
Try this —
LD = load('Dataset20230221.mat');
Dataset = LD.Dataset;
X = Dataset(:,1);
Y = Dataset(:,2);
[pks,locs] = findpeaks(Y, 'MinPeakProminence',0.01);
PeakData = table(X(locs),pks, [0;diff(X(locs))], [0; diff(pks)], 'VariableNames',{'Time','Peak Amplitudes','Peak Time Differences','Peak Amplitude Differences'})
figure
plot(X, Y)
hold on
plot(X(locs), pks, '+r')
hold off
grid
xlabel('Time')
ylabel('Amplitude')
EDIT — Corrected typographical errors.
.
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