MATLAB: I want to save the data from .mat file to csv file. I tried many methods but its not working.

Question

Here is my code and results are attached in image.

myFolder = 'folder'; % or whatever.
if ~isdir(myFolder)
  errorMessage = sprintf('Error: The following folder does not exist:\n%s', myFolder);
  uiwait(warndlg(errorMessage));
  return;
end
filePattern = fullfile(myFolder, '*.jpg');
matFiles = dir(filePattern);
X = cell(length(matFiles), 1);
for k = 1:length(matFiles)
  baseFileName = matFiles(k).name;
  img = fullfile(myFolder, baseFileName);
  fprintf(1, 'Now reading %s\n', img);
  storedStructure = imread(img);
  % Now do whatever you need to do with the structure you recalled.
  %figure    % New figure, do not specify the index
  %imshow(img);
  FaceDetect = vision.CascadeObjectDetector;
  FaceDetect.MergeThreshold = 7 ;
  BB = step(FaceDetect,storedStructure); %figure(2),imshow(img);
  for i = 1:size(BB,1)
     rectangle('Position',BB(i,:),'LineWidth',3,'LineStyle','- ','EdgeColor','r');
  end
  % figure
    for i = 1:size(BB,1)
      J= imcrop(storedStructure,BB(i,:));
      %subplot(6,6,i);
      figure
      imshow(J);
      % Create a folder with the base file name
      [~, baseFileNameNoExt, ~] = fileparts(baseFileName);
      outputFolder = fullfile(myFolder, baseFileNameNoExt);
      if ~exist(outputFolder, 'dir')
          mkdir(outputFolder);
          fprintf('Created folder : %s\n', outputFolder);
      end
      % Prepare output filename
      outputFileName = fullfile(outputFolder, baseFileName);
      % Write file to that folder
      imwrite(J, outputFileName);
      fprintf('    Copied %s to the folder called %s.\n', baseFileName, outputFolder);
    end
         X{k} = [x{k} HOG(J)'];
         save('features.mat','J');
  end

Answer 1

Save the cell array like this

csvwrite('features.csv', cell2mat(x))