MATLAB: How to write data into .txt file

MATLAB

How should i write the AVG and standard deviation data into .txt file?
  d = 'E:\\ \\ DummyFile\\';
    filePattern = fullfile(d, 'Run*');
    file = dir(filePattern)
    n = length(file)
    for k = 1:n
      baseFileName = file(k).name;
      FullFileName = fullfile(d, baseFileName, 'dummy.csv');
      temp = readtable(FullFileName, 'ReadVariableNames' true, 'ReadRowsNames' true);
      x(:, :, k) = temp(:, :);
    end
    %Finding Average and Std
    Avg = mean(x,3);
    Standard_deviation = std(x,0,3)

Best Answer

% Ask for the name of the file that the user wants to save.
startingFolder = pwd % or wherever you want.
defaultFileName = fullfile(startingFolder, '*.*');
[baseFileName, folder] = uiputfile(defaultFileName, 'Specify a file');
if baseFileName == 0
	% User clicked the Cancel button.
	return;
end
fullFileName = fullfile(folder, baseFileName)
% Open file for writing.
fid = fopen(fullFileName, 'wt');
if fid ~= -1
    % Was able to open it successfully, now write stuff into it.
    fprintf(fid, 'Average = %f.\nStandard Deviation = %f.\n', Avg, Standard_deviation);
    fclose(fid);  
else
    errorMessage = sprintf('Error opening %s for output.', fullFileName);
    uiwait(errordlg(errorMessage));
end
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