I need to output a cell to an excel file. Before this I need to convert a date column of integers to datestrings. I know how to do this, but I am not able to put this new string array back into the cell -

mycell = { 'AIR' [780] [1] [734472] [0.01] ; ...
           'ABC' [780] [1] [734472] [0.02]}

I did this -->

dates = datestr(cell2mat(mycell(:,4))) ;

What I need as an answer is:

{'AIR' [780] [1] '14-Dec-2010' [0.01] ;
 'ABC' [780] [1] '23-Dec-2010' [0.03] ; }

so that I can now send it to an excel file using xlswrite.m