Splines and interpolation.
WARNING: NOT API STABLE.
class CubicSplineInterpolator : Interpolator
Interpolates values between the given data points using a SplineFunction. 

interface Interpolator 

interface InterpolatorFactory 

class LinearInterpolator : Interpolator
Interpolates values between the given data points using straight lines. 

class Polynomial
Represents a polynomial function of arbitrary degree. 

class SplineFunction
A spline is function piecewisedefined by polynomial functions. Points at which polynomial pieces connect are known as knots. 