Determining the number of occurrences of each unique element in a vector

Question

How can I determine the relative frequency of a value in a MATLAB vector?

vector = [ 2 2 2 2 1 1 1 2 2 1 1 1 2 2 2 2 1 2 ];

What function w

Answer 1

You can use the function tabulate. See this example with your vector.

vector = [ 2 2 2 2 1 1 1 2 2 1 1 1 2 2 2 2 1 2 ];
tabulate(vector);
  Value    Count   Percent
      1        7     38.89%
      2       11     61.11%

If you need it in percent order, do:

t = tabulate(vector);
t = sortrows(t, 3)