conversion of [h,m,s] to h:m:s

How can I depict the time as a ax1 matrix in the form h:m:s instead of a ax3 matrix showing hour, minute and second in different columns?

Answer 1

[Stephen23]

You can easily convert the numeric array to a character array using sprintf:

>> A = [12,34,15;16,02,59];
>> B = reshape(sprintf('%02d:%02d:%02d',A'),[],size(A,1))'
B =
12:34:15
16:02:59

And simply wrap this in a cellstr to get these as strings in a cell array:

>> cellstr(B)
ans = 
    '12:34:15'
    '16:02:59'