Deriv Approx

Deriv Approx refers to List of possible types that describe how the derivatives (i.e. the slope, curvature and higher moments) of the interpolated function must be approximated.
Available Deriv Approx types:
Akima
Fourth Order
Fritsch Butland
Kruger
Parabolic
Spline
Spline OM1
Spline OM2