How to count the number of repeat elements in a matrix

Question

Yori Galisteu 2019-9-16

评论： Yori Galisteu 2019-9-23

Hi there, i'm having a throuble with it:

I have the follow matrix:

M = [ Fa
         Fa
         Fa
         Fa
         Ka
         Ka];

I wish to count how many times the symbols repeat and give me a answer like that: A = [ 4 2].

There's a way to do it? I already tried to search but the methods that i found is using numbers, but my matrix is composite with letters.

Answer 1

madhan ravi 2019-9-16

M =["Fa"
    "Fa"
    "Fa"
    "Fa"
    "Ka"
    "Ka"];
[~,~,c] = unique(M);
A = accumarray(c,1)

Yori Galisteu 2019-9-23

I take a bit long to answer. Thanks, it works!

:)