Package com.irurueta.numerical.interpolation

Class AccurateInterpolatingPolynomialEstimator

java.lang.Object

com.irurueta.numerical.interpolation.InterpolatingPolynomialEstimator

com.irurueta.numerical.interpolation.AccurateInterpolatingPolynomialEstimator

public class AccurateInterpolatingPolynomialEstimator
extends InterpolatingPolynomialEstimator

Estimates coefficients of a polynomial passing through provided set of x and y points. This implementation is more accurate than other implementations such as implementations of PolynomialEstimator. Those implementations are based on curve fitting a polynomial of a given degree based on a number of points that can be much larger than the number of points, which results in a polynomial that does not exactly pass through provided points, but provides a minimum square error result. On the other hand, this implementation builds a polynomial of order equal to the length of provided x and y points. Ths implementation is more accurate than SimpleInterpolatingPolynomialEstimator, at the expense of greater computational cost (N^3 of this method vs N^2 of the simple one).

Constructor Summary

Constructors

Constructor	Description
AccurateInterpolatingPolynomialEstimator()

Method Summary

Modifier and Type	Method	Description
void	estimate(double[] xa, double[] ya, double[] cof)	Estimates polynomial coefficients from provided x and y points.

Methods inherited from class com.irurueta.numerical.interpolation.InterpolatingPolynomialEstimator

estimate, estimate, estimateCoefficients

Methods inherited from class java.lang.Object

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

Constructor Details

AccurateInterpolatingPolynomialEstimator

public AccurateInterpolatingPolynomialEstimator()

Method Details

estimate

public void estimate(double[] xa,
 double[] ya,
 double[] cof)
              throws InterpolationException

Estimates polynomial coefficients from provided x and y points.

Specified by:

estimate in class InterpolatingPolynomialEstimator

Parameters:

xa - x points the estimated polynomial passes through.

ya - y points the estimated polynomial passes through.

cof - instance where coefficients of estimated polynomial will be stored.

Throws:

IllegalArgumentException - if any of the provided values doesn't have the same length.

InterpolationException - if interpolation fails for numerical reasons.