How can i multiply each elements of a 16x16 two dimensional matrix with one another to generate 256 values ?

I've been trying to figure out an easy way to do this, can someone help. Thank you!

Answer 1

[Matt J]

 result = kron(A,A);

Answer 2

[Walter Roberson]

result = FirstArray .* SecondArray;

Answer 3

[Roger Stafford]

Suppose your 16-by-16 matrix is called M. If you really want to multiply each element of M by all other elements of M, then do this:

N = M(:);
N = N*(N.');

However the result, N, will be of dimension 256-by-256 which is 65536 elements altogether. Is that what you want?