identify a corresponding value

Hello there,

I have three different signals (1,2,3)

I have identified the peaks values and locations in singal number 1 (blue color).

How can I idenitified the corresponding value of exact location in signals number 2 and 3?

I attached the data and the picture.

Could anyone provide me with the code please?

Thanks

I used this code:

figure (1)
plot (Data (:,1), Data (:,(2)), "b")
hold on
plot (Data (:,1), Data (:,(3)), "g")
hold on 
plot (Data (:,1), Data (:,(4)), "r") 
hold on
legend({'1','2', '3'},'Location','southwest')
hold on
hold off 

[pks,locs] = findpeaks((Data (:,(2))), Data (:,1), 'MinPeakHeight',20, 'MinPeakDistance',1)  

Answer 1

[Image Analyst]

Try this:

fullFileName = fullfile(pwd, 'data.mat');
s = load(fullFileName)
Data = s.Data_head;
hFig = figure
plot (Data(:,1), Data (:,2), "b", 'LineWidth', 2)
hold on
plot (Data(:,1), Data (:,3), "g", 'LineWidth', 2)
plot (Data(:,1), Data (:,4), "r", 'LineWidth', 2) 
legend({'1','2', '3'},'Location','southwest')
hold off 
grid on;
hFig.WindowState = 'maximized'; % Later versions of MATLAB only.

% Data(:, 1) are the x values.
% Get the peaks for y1:
[peakValues1, peakIndexes1] = findpeaks(Data(:,2), 'MinPeakHeight',20, 'MinPeakDistance',3);
% Get the peaks for y2:
[peakValues2, peakIndexes2] = findpeaks(Data(:,3), 'MinPeakDistance',3);
% Get the peaks for y3:
[peakValues3, peakIndexes3] = findpeaks(Data(:,4), 'MinPeakDistance',3);

[Ahmed Alalawi]

Thanks for the quick response.

What I meant is, based on the peak value in the blue line, I need to identify the corresponing values in the other lines (red and green)? They do not have to be peaks in the red and blue, just the values.

Please see the attached picture for clarification.

[Image Analyst]

You can just use the same indexes you got for the one signal, peakIndexes2, for all other signals. Do this:

% Get the peaks for y2:
peakValues2 = Data(peakIndexes2, 3);
% Get the peaks for y3:
peakValues3 = Data(peakIndexes2, 4);