org.opensourcephysics.numerics
Class PolynomialLeastSquareFit

java.lang.Object
  org.opensourcephysics.numerics.Polynomial
      org.opensourcephysics.numerics.PolynomialLeastSquareFit

All Implemented Interfaces:

Function

Direct Known Subclasses:

KnownPolynomial

public class PolynomialLeastSquareFit
extends Polynomial

Polynomial least square fit without any error estimation. See Object Oriented Implementation of Numerical Methods by Didier H. Besset for fitting with error estimation.

Author:

Wolfgang Christian.

Field Summary

Fields inherited from class org.opensourcephysics.numerics.Polynomial

coefficients

Constructor Summary

PolynomialLeastSquareFit(double[] coeffs)
Constructs a PolynomialLeastSquareFit with the given coefficients.

PolynomialLeastSquareFit(double[] xd, double[] yd, int degree)
Constructs a PolynomialLeastSquareFit with the given order.

Method Summary

protected void	computeCoefficients() Computes the polynomial coefficients.
void	fitData(double[] xd, double[] yd) Sets the data and updates the fit coefficients.

Methods inherited from class org.opensourcephysics.numerics.Polynomial

add, add, coefficient, deflate, degree, derivative, divide, divide, divideWithRemainder, evalPolynomial, evaluate, getCoefficients, integral, integral, multiply, multiply, roots, rootsReal, subtract, subtract, toString, valueAndDerivative

Methods inherited from class java.lang.Object

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

Constructor Detail

PolynomialLeastSquareFit

public PolynomialLeastSquareFit(double[] xd,
                                double[] yd,
                                int degree)

Constructs a PolynomialLeastSquareFit with the given order.

Parameters:

xd - double[]

yd - double[]

degree - int the degree of the polynomial

PolynomialLeastSquareFit

public PolynomialLeastSquareFit(double[] coeffs)

Constructs a PolynomialLeastSquareFit with the given coefficients. Added by D Brown 12/20/2005.

Parameters:

coeffs - the coefficients

Method Detail

fitData

public void fitData(double[] xd,
                    double[] yd)

Sets the data and updates the fit coefficients. Added by D Brown 12/1/05.

Parameters:

xd - double[]

yd - double[]

computeCoefficients

protected void computeCoefficients()

Computes the polynomial coefficients.