Package cnuphys.splot.fit

Class Polynomial

java.lang.Object

cnuphys.splot.fit.Polynomial

All Implemented Interfaces:

IValueGetter

public class Polynomial
extends Object
implements IValueGetter

Constructor Summary

Constructors

Constructor	Description
Polynomial(double[] a)

Method Summary

Modifier and Type	Method	Description
double[]	findRoots(double xmin, double xmax)	Find the roots of the polynomial in a range
Point2D.Double[]	findXValsOfMaxima(double xmin, double xmax)	Find the xy values of the maxima of the polynomial in a given range
Polynomial	getDerivative()
int	getMaxNumberOfPositiveRoots()
static int	maxNumPositiveRoots(double[] a)
double	value(double x)

Methods inherited from class java.lang.Object

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

Constructor Details

Polynomial

public Polynomial(double[] a)

Method Details

value

public double value(double x)

Specified by:

value in interface IValueGetter

findRoots

public double[] findRoots(double xmin,
 double xmax)

Find the roots of the polynomial in a range

Parameters:

xmin - the min value of the range

xmax - the max value of the range

Returns:

an array of roots, or null

findXValsOfMaxima

public Point2D.Double[] findXValsOfMaxima(double xmin,
 double xmax)

Find the xy values of the maxima of the polynomial in a given range

Parameters:

xmin - the min value of the range

xmax - the max value of the range

Returns:

and array of xy values, or null

getMaxNumberOfPositiveRoots

public int getMaxNumberOfPositiveRoots()

getDerivative

public Polynomial getDerivative()

maxNumPositiveRoots

public static int maxNumPositiveRoots(double[] a)