Class that describes the sum density: the sum of two or more densities in the same phase spaces with optional weights. More...

#include <SumDensity.hh>

Inheritance diagram for SumDensity:

Public Member Functions
	SumDensity (const char pdfName, AbsPhaseSpace thePhaseSpace, std::vector< AbsDensity * > &densityComponents, std::vector< Double_t > &weights)
	Constructor of Sum density of an arbitrary number of density components. More...

	SumDensity (const char pdfName, AbsPhaseSpace thePhaseSpace, AbsDensity d1, AbsDensity d2, Double_t w1=1., Double_t w2=1.)
	Constructor of Sum density of up to four density components. More...

	SumDensity (const char pdfName, AbsPhaseSpace thePhaseSpace, AbsDensity d1, AbsDensity d2, AbsDensity *d3, Double_t w1=1., Double_t w2=1., Double_t w3=1.)
	Constructor of Sum density of up to four density components. More...

	SumDensity (const char pdfName, AbsPhaseSpace thePhaseSpace, AbsDensity d1, AbsDensity d2, AbsDensity d3, AbsDensity d4, Double_t w1=1., Double_t w2=1., Double_t w3=1., Double_t w4=1.)
	Constructor of Sum density of up to four density components. More...

virtual	~SumDensity ()
	Destructor. More...

Double_t	density (std::vector< Double_t > &x)
	Calculate PDF value at the given point. More...

AbsPhaseSpace *	phaseSpace ()
	Return phase space definition for this PDF. More...

Public Member Functions inherited from AbsDensity
	AbsDensity (const char *pdfName)
	Constructor. More...

virtual	~AbsDensity ()
	Destructor. More...

void	slice (std::vector< Double_t > &x, UInt_t num, TH1F *hist)
	Calculate 1D slice of the PDF. More...

void	slice (std::vector< Double_t > &x, UInt_t numx, UInt_t numy, TH2F *hist, Bool_t inPhaseSpace=true)
	Calculate 2D slice of the PDF. More...

double	transform (TH1F hist1, TH1F hist2, double x)

void	project (TH1F *hist)
	Calculate projection of the 1D PDF. More...

void	project (TH2F *hist, Bool_t inPhaseSpace=true)
	Calculate projection of the 2D PDF. More...

void	setMajorant (Double_t majorant)
	Set majorant for accept-reject method. More...

void	setMaxTries (UInt_t maxTries)
	Set maximum number of tries for accept-reject method. More...

Double_t	generate (std::vector< Double_t > &x)
	Generate a single point within the phase space according to the PDF using accept-reject method. More...

void	generate (TNtuple *tree, UInt_t numEvents)
	Generate a sample of points within the phase space according to the PDF using accept-reject method. More...

const char *	name (void)
	Return the name of the PDF. More...

void	setSeed (UInt_t seed=0)
	Set random seed. More...

Private Member Functions
void	init (AbsPhaseSpace thePhaseSpace, std::vector< AbsDensity > &densityComponents, std::vector< Double_t > &weights)
	Common initialise function used by all constructors. More...

Private Attributes
AbsPhaseSpace *	m_phaseSpace
	Reference to phase space. More...

std::vector< AbsDensity * >	m_densityComponents
	Vector of density components. More...

std::vector< Double_t >	m_weights
	Vector of density component weights. More...

UInt_t	m_dim
	Cached dimensionality of the phase space. More...

Additional Inherited Members
Protected Attributes inherited from AbsDensity
char	m_name [256]
	PDF name. More...

Double_t	m_majorant
	PDF majorant (maximum PDF value needed for accept-reject). More...

UInt_t	m_maxTries
	Maximum number of tries for accept-reject method. More...

TRandom3	m_rnd
	Random number generator. More...

Detailed Description

Class that describes the sum density: the sum of two or more densities in the same phase spaces with optional weights.

Definition at line 13 of file SumDensity.hh.

Constructor & Destructor Documentation

SumDensity::SumDensity	(	const char *	pdfName,
		AbsPhaseSpace *	thePhaseSpace,
		std::vector< AbsDensity * > &	densityComponents,
		std::vector< Double_t > &	weights
	)

Constructor of Sum density of an arbitrary number of density components.

Parameters

[in]	pdfName	PDF name
[in]	thePhaseSpace	phase space. Dimensionality of the phase space should be equal to the ones of all density components.
[in]	densityComponents	vector of density components.
[in]	weights	vector of weights

Definition at line 13 of file SumDensity.cpp.

SumDensity::SumDensity	(	const char *	pdfName,
		AbsPhaseSpace *	thePhaseSpace,
		AbsDensity *	d1,
		AbsDensity *	d2,
		Double_t	w1 = `1.`,
		Double_t	w2 = `1.`
	)

Constructor of Sum density of up to four density components.

Parameters

[in]	pdfName	PDF name
[in]	thePhaseSpace	phase space. Dimensionality of the phase space should be equal to the ones of all density components.
[in]	d1	1st density component.
[in]	d2	2nd density component.
[in]	w1	1rd density component weight.
[in]	w2	2th density component weight.

Definition at line 21 of file SumDensity.cpp.

SumDensity::SumDensity	(	const char *	pdfName,
		AbsPhaseSpace *	thePhaseSpace,
		AbsDensity *	d1,
		AbsDensity *	d2,
		AbsDensity *	d3,
		Double_t	w1 = `1.`,
		Double_t	w2 = `1.`,
		Double_t	w3 = `1.`
	)

Constructor of Sum density of up to four density components.

Parameters

[in]	pdfName	PDF name
[in]	thePhaseSpace	phase space. Dimensionality of the phase space should be equal to the ones of all density components.
[in]	d1	1st density component.
[in]	d2	2nd density component.
[in]	d3	2nd density component.
[in]	w1	1rd density component weight.
[in]	w2	2th density component weight.
[in]	w3	2th density component weight.

Definition at line 37 of file SumDensity.cpp.

SumDensity::SumDensity	(	const char *	pdfName,
		AbsPhaseSpace *	thePhaseSpace,
		AbsDensity *	d1,
		AbsDensity *	d2,
		AbsDensity *	d3,
		AbsDensity *	d4,
		Double_t	w1 = `1.`,
		Double_t	w2 = `1.`,
		Double_t	w3 = `1.`,
		Double_t	w4 = `1.`
	)

Constructor of Sum density of up to four density components.

Parameters

[in]	pdfName	PDF name
[in]	thePhaseSpace	phase space. Dimensionality of the phase space should be equal to the ones of all density components.
[in]	d1	1st density component.
[in]	d2	2nd density component.
[in]	d3	2nd density component.
[in]	d4	2nd density component.
[in]	w1	1rd density component weight.
[in]	w2	2th density component weight.
[in]	w3	2th density component weight.
[in]	w4	2th density component weight.

Definition at line 55 of file SumDensity.cpp.

SumDensity::~SumDensity ( )

virtual

Destructor.

Definition at line 75 of file SumDensity.cpp.

Member Function Documentation

Double_t SumDensity::density ( std::vector< Double_t > & x )

virtual

Calculate PDF value at the given point.

Parameters

[in] x the point at which to calculate the PDF

Returns: PDF value

Implements AbsDensity.

Definition at line 107 of file SumDensity.cpp.

void SumDensity::init	(	AbsPhaseSpace *	thePhaseSpace,
		std::vector< AbsDensity * > &	densityComponents,
		std::vector< Double_t > &	weights
	)

private

Common initialise function used by all constructors.

Parameters

[in]	thePhaseSpace	phase space
[in]	densityComponents	vector of density components.
[in]	weights	vector of weights

Definition at line 79 of file SumDensity.cpp.

AbsPhaseSpace* SumDensity::phaseSpace ( )

inlinevirtual

Return phase space definition for this PDF.

Returns: PDF phase space

Implements AbsDensity.

Definition at line 103 of file SumDensity.hh.

Member Data Documentation

std::vector<AbsDensity*> SumDensity::m_densityComponents

private

Vector of density components.

Definition at line 121 of file SumDensity.hh.

UInt_t SumDensity::m_dim

private

Cached dimensionality of the phase space.

Definition at line 127 of file SumDensity.hh.

AbsPhaseSpace* SumDensity::m_phaseSpace

private

Reference to phase space.

Definition at line 118 of file SumDensity.hh.

std::vector<Double_t> SumDensity::m_weights

private

Vector of density component weights.

Definition at line 124 of file SumDensity.hh.

The documentation for this class was generated from the following files:

inc/SumDensity.hh
src/SumDensity.cpp

Public Member Functions

Private Member Functions

Private Attributes

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation