> a Z order curve is not considered continuous Not true. A curve is by definition continuous, and a true Z-order curve is no exception. I was asking whether th

> a Z order curve is not considered continuous Not true. A curve is by definition continuous, and a true Z-order curve is no exception. I was asking whether the Z-order curve displayed there was a true one. The definition of a space-filling curve is a continuous surjection from [0,1] to [0,1]^2.