MATLAB: Mixed data types cell to string

mixed data typesxlsread

Using xlsread I read the a spreadsheet
[ndata, text, alldata] =  xlsread(filename);
One cloumn of alldata is a mixed data types as shown below (strings and integers). As I wish to use it for further analysis, is it possible to convert all this cell to be strings?
Thanks.
Cell output:
      'NoGroup'
      'NoGroup'
      'NoGroup'
      [1]
      [1]
      [1]
      [2]
      [2]
      [2]
      [2]
      [2]
      [2]
      'Group3'
      'Group3'
      'Group3'

Best Answer

C = {'NoGroup', 1; 2; 'Group3'};
for iC = 1:numel(C)
  if ~ischar(C{iC});
    C{iC} = num2str(C{iC});
  end
end
There are alternatives like cellfun('isclass', C, 'char') or sprintf('%g', C[iC}).
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