How to use a nested loop to do a matrix calculation?

For example, i defined a new function called d(x,y).

The x matrix would be [1 2 3 4; 5 6 7 8; 9 10 11 12; 13 14 15 16]

and the y matrix would be [16 15 14 13; 13 14 15 16; 17 18 19 20; 21 22 22 23].

How can I get the result with the function d(x,y) with a nested loop?

The result matrix should have the same size as x and y matrix.

Thank you guys

Answer 1

[madhan ravi]

x = [1 2 3 4; 5 6 7 8; 9 10 11 12; 13 14 15 16] 
y = [16 15 14 13; 13 14 15 16; 17 18 19 20; 21 22 22 23]
v = zeros(k,l);
for k = 1:numel(x)
    for l = 1:numel(y)
        v(k,l)= d(x(k),y(l));
    end
end

Note: The same can be achieved using meshgrid() or ndgrid(). I haven’t see the function d() if it’s properly vectorised you can take advantage of implicit expansion.