Another aspect of the sequence z₀, z₁, z₂… z_n that can be measured is the curvature between consecutive iterations. A quick estimate can be obtained by using only the last two orbit points. A more thorough measure can be obtained by averaging [5] over all iterations.

                                                                  [5]

A variation on this method determines the radius of a circle passing through three consecutive orbit points. This factors in not only the angle between consecutive points, but the distance between them as well.