Loading Data from multiple .mat files in a folder and plotting

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Imtiaz 2023-5-12

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编辑： Stephen23 2023-5-31

I need to load data from these 10 .mat files and plot fx versus Uref. Can anyone please help me with a sample code. I have tried using the for loop but it's not loading all the files.

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Rik 2023-5-12

Also, please do not post a picture of your code, but post the code itself.

Stephen23 2023-5-31

编辑：Stephen23 2023-5-31

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The simple and efficient approach is to let DIR get the filenames, e.g.:

P = 'absolute/relative path to where the files are saved';
S = dir(fullfile(P,'OCTAGON*.mat'));
for k = 1:numel(S)
    F = fullfile(S(k).folder,S(k).name);
    D = load(F)
    ..
end

https://www.mathworks.com/help/matlab/import_export/process-a-sequence-of-files.html

https://www.mathworks.com/help/matlab/ref/dir.html

https://www.mathworks.com/help/matlab/ref/fullfile.html

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回答（1 个）

Swaraj 2023-5-31

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Hi Imtiaz,

I understand that you want to load multiple .mat file from a folder and plot the data from it and you are facing problem in loading the .mat files.

To check your issue, I created a folder with following files.

I wrote the following sample code, and I was able to load the specified three .mat file and ignoring the excel file.

currentDir = pwd;
fileList = dir(currentDir);
fileList = {fileList.name};
filteredFileList = fileList(cellfun(@(x) contains(x, 'OCTAGON') && contains(x,'.mat'), fileList));
for i=1:length(filteredFileList)
    file = load(filteredFileList{i});
    %Do your task with the file here
end