for loop to read different files

I'm trying to run a for loop to read 3 different files loaded already on my workspace. Add the values on file 1 to file 2. Extract from another file the data and add +600, add that new data to an array and plot it. Any help with the code for this is really appreciated!

Something like this:

for j=1 numFiles
    ***read file 1
    ***read file 2
    ***add file 1 to file 2
    ***extract file 3 (new data +600)
    *** add that chunk of data to an array
end
plot new chunk of data

Answer 1

[Sulaymon Eshkabilov]

There are a few different ways that can do this exercise. Here is one of them:

clearvars
FILE = fullfile('C:\Users\...', '*.txt');  % Directory where the files are residing. Your data file extension, e.g.: .txt, .xlsx, .csv, etc 
LIST = dir(FILE);
N = length(LIST);                          % N = data files 
D = zeros(1e3, 1e3, N);
for ii = 1 : N   
    FFName = fullfile(LIST(ii).folder, LIST(ii).name);
    DATA = readmatrix(FFName);                
    D(:, :, ii) = DATA;                    % NOW D contains all data from N files
end
plot()  % Select and process the part of D that is necessary

You can adjust this shown loop code for three different files