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

Source Code:

GaussianCore2DNorm.java

Field Summary

protected boolean	providesNormalization
protected double	r2

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

dimension, numberOfParameters, p, parNames, title

Constructor Summary

GaussianCore2DNorm(String str)

GaussianCore2DNorm(String str, double[] pVal)

Method Summary

double	functionValue(double[] var)
double[]	gradient(double[] var)
static void	main(String[] args)
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, init, numberOfParameters, parameter, parameterNames, parameters, setParameter, setParameterNames, setParameters, setTitle, title

Methods inherited from class java.lang.Object

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

Field Detail

providesNormalization

protected boolean providesNormalization

r2

protected final double r2

Constructor Detail

GaussianCore2DNorm

public GaussianCore2DNorm(String str)

GaussianCore2DNorm

public GaussianCore2DNorm(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)

main

public static void main(String[] args)
                 throws IOException

Throws:

IOException