Package org.jgraph.util

Class Spline

  • public class Spline
extends java.lang.Object
    Interpolates given values by B-Splines.

    • Constructor Summary

      Constructors 
      Constructor Description
      Spline​(double[] xx, double[] yy)
      Creates a new Spline.

    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      boolean checkValues()
      Used to check the correctness of this spline
      double getDx​(double x)
      Returns the first derivation at x.
      double getFastValue​(double x)
      Returns an interpolated value.
      double getValue​(double x)
      Returns an interpolated value.
      void setValues​(double[] xx, double[] yy)
      Set values for this Spline.
      void solve​(double[][] A, double[] b)
      Solves Ax=b and stores the solution in b.

      • Methods inherited from class java.lang.Object

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

    • Constructor Detail

      • Spline

        public Spline​(double[] xx,
              double[] yy)
        Creates a new Spline.
        Parameters:
        xx -
        yy -

    • Method Detail

      • setValues

        public void setValues​(double[] xx,
                      double[] yy)
        Set values for this Spline.
        Parameters:
        xx -
        yy -

      • getValue

        public double getValue​(double x)
        Returns an interpolated value.
        Parameters:
        x -
        Returns:
        the interpolated value

      • getFastValue

        public double getFastValue​(double x)
        Returns an interpolated value. To be used when a long sequence of values are required in order, but ensure checkValues() is called beforehand to ensure the boundary checks from getValue() are made
        Parameters:
        x -
        Returns:
        the interpolated value

      • checkValues

        public boolean checkValues()
        Used to check the correctness of this spline

      • getDx

        public double getDx​(double x)
        Returns the first derivation at x.
        Parameters:
        x -
        Returns:
        the first derivation at x

      • solve

        public void solve​(double[][] A,
                  double[] b)
        Solves Ax=b and stores the solution in b.