Package org.opensourcephysics.numerics

Class Interpolation

java.lang.Object
org.opensourcephysics.numerics.Interpolation
public class Interpolation extends Object
Class Interpolation defines simple interpolation algorithms. This class cannot be subclassed or instantiated because all methods are static.
Author:
Wolfgang Christian

  • Method Summary

    Modifier and Type
    Method
    Description
    static double
    lagrange(double x, double[] xd, double[] yd)
    Lagrange polynomial interpolation at a single point x.
    static double
    linear(double x, double x0, double x1, double y0, double y1)
    Linear interpolation at a single point x.

    Methods inherited from class java.lang.Object

    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

  • Method Details

    • linear

      public static double linear(double x, double x0, double x1, double y0, double y1)
      Linear interpolation at a single point x.
      Parameters:
      x - double
      x0 - double
      x1 - double
      y0 - double
      y1 - double
      Returns:
      double

    • lagrange

      public static double lagrange(double x, double[] xd, double[] yd)
      Lagrange polynomial interpolation at a single point x. Because Lagrange polynomials tend to be ill behaved, this method should be used with care. A LagrangeInterpolator object should be used if multiple interpolations are to be performed using the same data.
      Parameters:
      x - double
      xd - double[] the x data
      yd - double[] the y data
      Returns:
      double