Class MonotonicityPreservingCubicSplineInterpolator

  • public class MonotonicityPreservingCubicSplineInterpolator
    extends PiecewisePolynomialInterpolator
    Filter for local monotonicity of cubic spline interpolation based on R. L. Dougherty, A. Edelman, and J. M. Hyman, "Nonnegativity-, Monotonicity-, or Convexity-Preserving Cubic and Quintic Hermite Interpolation" Mathematics Of Computation, v. 52, n. 186, April 1989, pp. 471-494.

    First, interpolant is computed by another cubic interpolation method. Then the first derivatives are modified such that local monotonicity conditions are satisfied.