stella.util

Class NasmythPointingModel.Harmonics

java.lang.Object

stella.util.NasmythPointingModel.Harmonics

Enclosing class:

NasmythPointingModel

private static class NasmythPointingModel.Harmonics
extends Object

A pure harmonic model

Field Summary

Fields

Modifier and Type	Field and Description
private SphericalHarmonics.LM[]	lm Index in this array is parameter index in model.
private double	xhigh Zonal harmonics: theta-hi cosine.
private double	xlow Zonal harmonics: theta-hi.

Constructor Summary

Constructors

Modifier	Constructor and Description
private	Harmonics(SphericalHarmonics.LM[] lm)
private	Harmonics(SphericalHarmonics.LM[] lm, double thetalow, double thetahigh)

Method Summary

Modifier and Type	Method and Description
double	evaluate(VectorG params, VectorG azcosz) The dimension of the parameter vector must match our lm-tupel.
int	getNumberOfTerms()

Methods inherited from class java.lang.Object

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

Field Detail

lm

private SphericalHarmonics.LM[] lm

Index in this array is parameter index in model.

xhigh

private double xhigh

Zonal harmonics: theta-hi cosine.

xlow

private double xlow

Zonal harmonics: theta-hi.

Constructor Detail

Harmonics

private Harmonics(SphericalHarmonics.LM[] lm)

Harmonics

private Harmonics(SphericalHarmonics.LM[] lm,
                  double thetalow,
                  double thetahigh)

Method Detail

getNumberOfTerms

public int getNumberOfTerms()

evaluate

public double evaluate(VectorG params,
                       VectorG azcosz)

The dimension of the parameter vector must match our lm-tupel. Each index in the lm-tupel links to a zonal spherical harmonics U_l,m that is evaluated at the specified azimuth and cos(90-h). The model value is the sum of all harmonics, multiplied by their relevant parameter weights. The argument is the azimuth in the first index and the