How do I count the numbers of 0s and display the results?

Hi all,

How do I count the numbers of 0s in the results as shown below and display the results?

Thank you

Columns 1 through 12

     0     0     0     0     0     0     0     0     0     0     0     0

Columns 13 through 20 

     0     0     0     0     0     0     0     0

Answer 1

[José-Luis]

your_val = sum(your_mat(:)==0);

[Yao]

Thank you sir

Answer 2

[Walter Roberson]

numel(your_mat) - nnz(your_mat)