Comment by calebm
11 hours ago
I've been calling it "error" (the difference between the left and right side of the equation). But if there is a better term to use, I'd like to know it.
11 hours ago
I've been calling it "error" (the difference between the left and right side of the equation). But if there is a better term to use, I'd like to know it.
I think "difference" is better, as "error" implies one side is correct and the other is an approximation. Specifically, you're plotting absolute difference z = |f(x, y)-g(x, y)| (or, worse, absolute error), not error.