MATLAB: How to count the total number of occurrences of each digit in cell arrays

cell arrays

Suppose I have a cell array
C = {[1; 4; 7]; [2; 5; 8; 9]; [3; 4]};
c{:}
ans = 
1
4
7
ans =
2
5
8
9
ans=
3
4
   % where any digit won't repeat in the individual cell.
   % There are 4 stages in this cell array. 
   % first stage elements are 1, 2, 3
   % second stage elements are 4, 5, 4
   % third stage elements are 7,8
   % fourth stage elements are 9
I need to count the total number of occurrences of each digit in stage 2. Expected output:
Digit | Number of occurrences
  4        2
  5        1

Best Answer

>> C = {[1; 4; 7]; [2; 5; 8; 9]; [3; 4]};
>> V = cellfun(@(v)v(2),C);
>> U = unique(V);
>> N = histc(V,U);
>> [U,N]
ans =
   4   2
   5   1
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