hep.aida.ref.function

Class GaussianCore2DNorm

java.lang.Object

hep.aida.ref.function.FunctionCore

hep.aida.ref.function.GaussianCore2DNorm

public class GaussianCore2DNorm
extends FunctionCore

Not normalised Gaussian 2D (G2) distribution in the form: f = (1/N)*exp(-(x-meanX)^2/(2*sigmaX^2))*exp(-(y-meanY)^2/(2*sigmaY^2)) has 4 parameters Normalization Amplitude is calculated by the "normalizationAmplitude" method

Constructor Summary

Constructors

Constructor and Description
GaussianCore2DNorm(java.lang.String str)
GaussianCore2DNorm(java.lang.String str, double[] pVal)

Method Summary

Modifier and Type	Method and Description
double	functionValue(double[] var)
double[]	gradient(double[] var)
double	normalizationAmplitude(double[] xMin, double[] xMax)
double[]	parameterGradient(double[] var)
boolean	providesGradient()
boolean	providesNormalization()
boolean	providesParameterGradient()
static double	sign(double d, double d1)

Methods inherited from class hep.aida.ref.function.FunctionCore

addCoreListener, dimension, getHandles, indexOfParameter, numberOfParameters, parameter, parameterNames, parameters, setParameter, setParameterNames, setParameters, setTitle, title

Methods inherited from class java.lang.Object

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

Constructor Detail

GaussianCore2DNorm

public GaussianCore2DNorm(java.lang.String str)

GaussianCore2DNorm

public GaussianCore2DNorm(java.lang.String str,
                          double[] pVal)

Method Detail

functionValue

public double functionValue(double[] var)

Specified by:

functionValue in class FunctionCore

providesGradient

public boolean providesGradient()

Specified by:

providesGradient in class FunctionCore

gradient

public double[] gradient(double[] var)

Specified by:

gradient in class FunctionCore

providesParameterGradient

public boolean providesParameterGradient()

Specified by:

providesParameterGradient in class FunctionCore

parameterGradient

public double[] parameterGradient(double[] var)

Specified by:

parameterGradient in class FunctionCore

providesNormalization

public boolean providesNormalization()

Specified by:

providesNormalization in class FunctionCore

normalizationAmplitude

public double normalizationAmplitude(double[] xMin,
                                     double[] xMax)

Specified by:

normalizationAmplitude in class FunctionCore

sign

public static double sign(double d,
                          double d1)