Prashant Kumar answered . 2024-04-21 08:33:50

% Read files file1.txt through file20.txt, mat1.mat through mat20.mat
% and image1.jpg through image20.jpg.  Files are in the current directory.
for k = 1:20
  matFilename = sprintf('mat%d.mat', k);
  matData = load(matFilename);
  jpgFilename = strcat('image', num2str(k), '.jpg');
  imageData = imread(jpgFilename);
  textFilename = ['file' num2str(k) '.txt'];
  fid = fopen(textFilename, 'rt');
  textData = fread(fid);
  fclose(fid);
end

A very slight adaptation gives you:

% Read 1.jpg through m.jpg.  
% Files are in the "yourFolder" directory.
for k = 1:m
  jpgFilename = sprintf('%d.jpg', k);
  fullFileName = fullfile(yourFolder, jpgFilename);
  if exist(fullFileName, 'file')
    imageData = imread(fullFileName );
  else
    warningMessage = sprintf('Warning: image file does not exist:\n%s', fullFileName);
    uiwait(warndlg(warningMessage));
  end
  imshow(imageData);
end

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