MATLAB: How to find the X value that corresponds to the peak Y value from a set of plots

forfor loopif statementinterpolationlooping

Hi,

I have 100 output curves, and I would like to pick the value of X that corresponds to the maximum Y value. X and Y values are obtained in separate files. I have attached herewith three sets of curves, X1, X2, and X3 for Y1, Y2 and Y3. The Y-axis values is the sum of values from column 2 to 11 in Y files.

I would be grateful if anyone can help me in this regard. Please, let me know if my question is not clear enough.

Thank you very much. Regards, Ismail

Best Answer

[maxvaly,idx] = max(y) ;
maxvalx = x(idx) ;

where x and y are you data.

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[Pmpp, indexOfMax] = max(P);
xOfMax = I(indexOfMax);
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files = dir('*.txt') ;
N = length(files) ;
iwant = zeros(N,2) ;
for i = 1:N
    data = importdata(files(i).name) ;
    [val,idx] = max(data(:,2)) ;
    iwant(i,:) = [data(idx,1),val] ;
end

Copy all the text file sin one folder and runt his code.

Best Answer

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