Load multiple files on MATLAB

Question

Alakesh Upadhyaya 2023-2-21

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https://ww2.mathworks.cn/matlabcentral/answers/1916450-load-multiple-files-on-matlab

回答： Voss 2023-2-21

采纳的回答： Voss

So I have 10 data files and each data file contains X-cordinate and Y-cordinate of a ball for 100 frames.

The name of my files are like exp1.dat, exp2.dat, exp3.dat and so on till exp10.dat.

All of these files contain 2x100 data.

I have a code that calculates the velocity autocorelation of the ball for 100 time frames using the X and Y-cordinate.

What I want is to know how to write a code so that I can have a loop to load these files in sequence and caluclate the VACF for each of these data files and find mean of all 10 VACF ?

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Answer 1

Voss 2023-2-21

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https://ww2.mathworks.cn/matlabcentral/answers/1916450-load-multiple-files-on-matlab#answer_1176790

在 MATLAB Online 中打开

n_files = 10;
VACF_all = zeros(n_files,100); % Pre-allocate a matrix to store all the VACF results.
                               % I assume the VACF you calculate for each file is a 1x100 vector (no idea if that's true)
for ii = 1:n_files
    file_name = sprintf('exp%d.dat',ii);
    % ...
    % load the file, calculate VACF
    % ...
    VACF_all(ii,:) = VACF; % store VACF as the ii-th row of VACF_all
end
mean_VACF = mean(VACF_all, 1); % take the mean of all 10 VACFs