org.ddogleg.solver

Class FitQuadratic1D

java.lang.Object

org.ddogleg.solver.FitQuadratic1D

public class FitQuadratic1D
extends java.lang.Object

Fits the coefficients for a quadratic polynomial to a set of even spaced data in an array.

y = a*x² + b*x + c

The coefficients (a,b,c) of the polynomial are found the solving a system of linear equations that minimizes the least squares error.

Constructor Summary

Constructors

Constructor and Description
FitQuadratic1D()

Method Summary

Modifier and Type	Method and Description
double[]	getCoefficients()
boolean	process(int offset, int length, double... data) Computes polynomial coefficients for the given data.

Methods inherited from class java.lang.Object

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

Constructor Detail

FitQuadratic1D

public FitQuadratic1D()

Method Detail

process

public boolean process(int offset,
                       int length,
                       double... data)

Computes polynomial coefficients for the given data.

Parameters:

length - Number of elements in data with relevant data.

data - Set of observation data.

Returns:

true if successful or false if it fails.

getCoefficients

public double[] getCoefficients()

Returns:

The coefficients [a,b,c]