Reading multiple csv file from multiple folder

I have a main folder contains 6 sub folder. Each sub folder contains 15 csv file. How to read all this data together?

Answer 1

[Stephen23]

P = 'absolute or relative path to the main folder';
S = dir(fullfile(P,'*','*.csv'));
for k = 1:numel(S)
    F = fullfile(S(k).folder,S(k).name);
    T = readtable(F); % or READCELL or READMATRIX
    % do whatever with your table/cell/matrix
    % e.g. store the data from every iteration:
    S(k).data = T;
end

[Nour Ahmed]

Thank you for your time.

It only save the last csv file. I need to save the data of each subfolder together.

[Stephen23]

"I need to save the data of each subfolder together."

You can easily store the imported file data in the structure S:

P = 'absolute or relative path to the main folder';
S = dir(fullfile(P,'*','*.csv'));
for k = 1:numel(S)
    F = fullfile(S(k).folder,S(k).name);
    T = readtable(F); % or READCELL or READMATRIX
    S(k).data = T;
end

For example, the 2nd file:

S(2).folder % path
S(2).name % filename
S(2).data % imported data

https://www.mathworks.com/help/matlab/matlab_prog/access-multiple-elements-of-a-nonscalar-struct-array.html

[Nour Ahmed]

It works with me. Thank you for your time.