MATLAB: Place zero in an empty matrix within cell array

Question

I have a cell array (x) where in this case there is no value in one of the cell matrix. I want to add a -1 value in the matrix as a way of 'place-holding' that column. I've tried these approaches:

emptyCells = cellfun('isempty',x);
x(emptyCells) = -1;
x(isnan([x{:}]))={-1}
x(cellfun(@isnan,x))={-1}

Any help would be greatly appreciated.

Answer 1

x(emptyCells) = {-1};