MATLAB: Undefined function ‘abs’ for input arguments of type ‘cell’.

Question

function c = test(A)

r=abs(A(2,2));

disp(r);

end

I'm trying to take the absolute value of a specific cell but i get this error.

Undefined function 'abs' for input arguments of type 'cell'.

Error in test (line 2)

r=abs(A(2,2));

What is going on that I can't see?

A is also a matrix with dimensions of at least 2×2.

Answer 1

It is saying A is a cell type. In order to check it, run the following code:

class(A)

If this is the case, the following should work:

function c = test(A)
    r=abs([A{2,2}]);
    disp(r);
end