Q:

How can I concatenate vector and cell in MATLAB?

I have matrix F of dimension 5 X 3. For example:
 F= [1 12 13; 
    2 23 24; 
    3 34 35; 
    4 45 46;
    5 56 57]

and I have a label cell of size 1X1  with entry 'v' i.e. 
>> label

     label = 

       'v'

and size of F is given by :
>> [m n]=size(F)

     m=

      5

    n =

      3

I want my output to look like:
>> F

    F =

         1    12    13   v
         2    23    24   v
         3    34    35   v
         4    45    46   v
         5    56    57   v

How can I concatenate the cell with the matrix to get this output? 

A:

To create an array that contains both numeric and non-numeric data, you need to put everything into a cell array (replace label by {label} in case it isn't a cell array):
Fcell = [ num2cell(F), repmat(label,size(F,1),1)]

You can then access individual numbers/letters using the curly brackets:
Fcell{2,2}

ans =
   23

