saving files in a loop with different names

Hi

My code looks something like:

for k = 1:length(sixCenters)

      grouped(:,:,k) = fisher_matrix;
      filename = strcat(sixCenters(k),'.mat');
      save(filename,grouped);

      continue; end

end

fisher_matrix is just matrix of doubles, sixCenters is a 6x1 cell, containing charachters like "NYU", "Lond".. The way I construct filename, it is indicated as char, so the line where I want to save the matrix "grouped" throws the following error:

Error using save
Argument must contain a string.

Error in example_Script(line 22)
    save(filename,grouped);

What can I do? Thanks

Answer 1

[Image Analyst]

Try this:

folder = pwd; % or whatever you want.
for k = 1 : length(sixCenters)  
  grouped(:, :, k) = fisher_matrix;
  baseFileName = sprintf('%s.mat', sixCenters{k});
  fullMatFileName = fullfile(folder, baseFileName);
  save(fullMatFileName, 'grouped');  
end

Then please please read the FAQ: http://matlab.wikia.com/wiki/FAQ#What_is_a_cell_array.3F

Answer 2

[Hamoon]

you should pass the string of the name of your variable, use this:

 save(filename,'grouped');

[MiauMiau]

that does NOT solve the problem, same error message. the problem is as indicated with filename

[Hamoon]

oh, you've got problem with filename too. you should use braces instead of parentheses for a cell array to get its value, when you use parentheses you refer to a cell with one dimension. So rewrite that section of your code as:

 filename = strcat(sixCenters{k},'.mat');

and also you need to do what I said before:

 save(filename,'grouped');