I make a folder that contains only the text files you want to combine. Then you can do something like this to load the file paths into MATLAB:
% Set input folder
input_folder = 'C:\whatever';
% Read all *.txt files from input folder
% NOTE: This creates a MATLAB struct with a bunch of info about each text file
% in the folder you specified.
files = dir(fullfile(input_folder, '*.txt'));
% Get full path names for each text file
file_paths = fullfile({files.folder}, {files.name});
Once you have them, you can read the data using textread:
% Read data from files, keep second column
for i = 1 : numel(file_paths)
% Read data from ith file.
% NOTE: If you're file has a text header, missing data, or
% uses non white-space delimiters, you should check out the
% documentation for textread to determine which options to use.
data = textread(file_paths{i}, '');
% Save second data column to matrix
% NOTE: Your data files all need to have the same number of rows for this to work
A(:, i) = data(:, 2);
end
% Calculate the average of the rows (second dimension) of A:
avg = mean(A, 2);
