Finding total count of values in a cell array?

I have a 4-D cell array, and there are empty arrays '[]' within it. How do I find the total number of the empty arrays?

This is what I tried.

% A is 4-D cell array

cnt = 0;

for a = 1:1:(size(A, 1))
    for b = 1:1:(size(A, 2))
        for c = 1:1:(size(A, 3))
            for d = 1:1:(size(A, 4))
                if A(a, b, c, d) == [] 
                    then cnt = cnt + 1;
                end
            end
        end
    end
end

Error: Undefined function or method 'eq' for input arguments of type 'cell'.

Someone please help me? Thanks.

[Fangjun Jiang]

To make your code work, change the if statement to

if isempty(A{a,b,c,d})

It seems that if you have x=cell(1);

x{1}==[] returns empty

[Jason]

Thank you for pointing out, Fang!

[Fangjun Jiang]

First, to reference the content of a cell array, you need to use {}, not ()

To check if the content is empty, use isempty(), not to use ==[]

[Jason]

Yes, I made a mistake, it should be A{a, b, c, d} - curly brackets, secondly, I learnt something new - the use of isempty. Thanks again.

Answer 1

[Fangjun Jiang]

cnt=cellfun('isempty',A);
cnt=sum(cnt(:));

[Jason]

Thanks!