determine the coordinates with the 0's within a cell

Hi! I have this cell. How can I determine the coordinates where the 0's are?

For example in 'matrix' I need to get a matrix with the coordinates (2,2) and (1,4):

matrix = importdata("matrix.mat");
out = [2,2; 1,4];

Answer 1

[Bruno Luong]

Why storing scalars in cell and not in matrix? It is very inefficient.

load matrix
check_1

check_1 = 4×2 cell array
    {[1]}    {[1]}
    {[1]}    {[0]}
    {[1]}    {[1]}
    {[0]}    {[1]}

[i,j]=find(cellfun(@(x) isequal(x,0), check_1));
ij = [i,j]

ij = 2×2

4 1 2 2