MATLAB: How to vectorize the following code snippet

MATLABvectorization

M = randi([-10 10],10,10);
[m, n] = size(M);
out = zeros(m, n);
for x = 1:m
for y = 1:n
if M(x, y) > 0
out(x, y) = 1;
else if M(x, y) == 0
out(x, y) = 0;
else
out(x, y)=-1;
end
end
end

Best Answer

That can all be reduced to: 
out = zeros(size(M))-1;
out(M>0)  = 1;
out(M==0) = 0;
producing the same result.
Related Question