how to count occurrences of a variable in a matrix?

Hi, I am stuck with my problem.

I have a matrix A = {'Red', 'Blue', 'Green', 'Yellow', 'White'; 'Red', 'Black', 'Purple', 'Red', 'White'}.

Now I want to count occurrences of 'Red' in this matrix. But I don't know how to count it. Please help me resolve this problem!

Thanks and Best Regards,

Kiet Vo

Answer 1

[KSSV]

A = {'Red', 'Blue', 'Green', 'Yellow', 'White'; 'Red', 'Black', 'Purple', 'Red', 'White'} ;
nnz(strcmp(A,'Red'))

ans = 3

[Võ Kiet]

nice!!! Thanks you so much, you saved me. Again, thanks so much.

Best Regards,

Kiet Vo