A = [NaN NaN 1;
NaN -2 -3;
NaN NaN NaN;
2 NaN -3;
NaN -3 -3;
1 -1 0] % Adding an explicit 0
B = A;
B(B <= 0) = 0;
B(B > 0) = 1
Or:
C = discretize(A, [-Inf, eps(0), Inf], [0, 1])
For this last approach anything in the interval [-Inf, eps(0)) (which includes 0; the fact that the right edge is not included is why I used eps(0) instead of 0) becomes 0. Anything in the interval [eps(0), Inf] (this last bin includes both left and right edges) becomes 1. Anything in neither of those intervals (aka NaN) becomes NaN.
If you want an explicit 0 in A to be a 1, use 0 instead of eps(0) in the second input.
