MATLAB: Sample letters from a character array

experimentMATLABrandom

Hey there!
I want to sample and save random letters to an array. It works fine, except the fact, that the saved data is numeric intead of characters. How can I recode the sampled data to character? Here my code so far.
expinfo.letters= ['B' 'C' 'D' 'F' 'G' 'H' 'J' 'K' 'L' 'M' 'N' 'P' 'Q' 'R' 'S' 'T' 'V' 'W' 'X' 'Z'];
    [TrialConfig(:,4)] = randsample(expinfo.letters,720,true)
It works fine, but my output is:
TrialConfig =
     5     2     0    72
     5     0     1    80
     5     1     0    68
     5     1     1    82
     5     2     1    87
     5     2     1    80
     5     1     0    87
     5     2     0    88
     5     1     1    83
     5     1     1    81
Where the last column should be the sampled letters. Any suggestions? If I don't assign the sampled letters to an array, all is fine.
Thanks for your help so far!
*j

Best Answer

Those are the numeric representations of the letters.
It is not possible to have a single array that has a mix of numbers and letters, not unless the array is either a cell array or a table (or timetable.)
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