I have a data set from an ORAS analyzer. It gives a cyclic pattern. i want to take each cycle and plot on top it ?

my dataset plots like this

i want to take each repeating cycle and plot on top of other.

like this below

[Mathieu NOE]

hello

you can use findpeaks to locate the peaks of your signal

then define the buffer length around the peaks (like a mean value of the time difference between peaks)

and extract each individual buffer according to peak location and buffer length

Answer 1

[Mathieu NOE]

hello again

a demo code below (data file in attachement)

hope it helps

clc
clearvars
data = readmatrix('data.txt');
time = data(:,1);
data = data(:,2);

figure(1);
plot(time,data);
[pks,loc] = findpeaks(data,'MinPeakHeight',5);
text(time(loc)+.2,pks,num2str((1:numel(pks))'));

% overlay individual peaks data
data_half_length = floor(0.5*mean(diff(loc)));
figure(2);
hold on
for ci = 1:numel(loc)
    ind_start = max(1,loc(ci)-data_half_length);
    ind_stop = min(length(data),loc(ci)+data_half_length);
    plot(data(ind_start:ind_stop));
end
xlabel('samples');
ylabel('Amplitude');
title('Overlayed data plot');
hold off

[Mathieu NOE]

hello

problem solved ?