How to save output from the for loop in a matrixs?

Hi i have a matrix with M x n dimension. I have performed the peak analysis for each column in the for loop. I want to save the output for the for loop as a matrix.

I have used the following for loop.

for i=x
    [pks,locs]=findpeaks((i),'MinPeakHeight',Thresold)   
end

I get output like this :

Thank you in advance

[DGM]

In this context, what is x in relation to your mxn matrix? What code precedes this?

[Kabit Kishore]

X is the matrix of M x n

Answer 1

[Image Analyst]

You can't pass (i) into findpeaks() - that's just a loop iterator, not a signal. You need to extract the column from your matrix. Then, since each column is not guaranteed to have the same number of peaks, you'll need a cell array to store the results.

[rows, columns] = size(data) % Size of your 2-D matrix of signals.
allPeakValues = cell(1, columns);
allPeakIndexes = cell(1, columns);
for col = 1 : columns
    % Extract one column from the matrix.
    thisColumn = data(:, col);
    % Find the peaks in that column.
    [thesePeakValues, theseIndexesOfPeaks] = findpeaks(thisColumn, 'MinPeakHeight', Threshold);
    % Save the peaks for this particular column in our cell array that
    % holds results for all the columns.
    allPeakValues{col} = thesePeakValues;
    allPeakIndexes{col} = theseIndexesOfPeaks;
end

[Kabit Kishore]

Thank you. It works perfectly

Answer 2

[KALYAN ACHARJYA]

Use Cell array to save the Matrices result

pks_data=cell(1,length(x));
locs_data=cell(1,length(x));
for i=1:x
    [pks,locs]=findpeaks((i),'MinPeakHeight',Thresold);
    pks_data{i}=pks;
    locs_data{i}=locs;
end

[Kabit Kishore]

Thank you, However it give error as shown below