Class that represents vertices. More...

#include <VertexFitObject.h>

Inheritance diagram for VertexFitObject:

Classes
struct	TrackDescriptor

Public Types
enum	{ VX = 1, VY = 2, VZ = 4, VXY = 3, VXYZ =7, PX = 8, PY = 16, PZ = 32, PXY = 24, PXYZ = 56, E = 64, EPXYZ = 120, THE_FULL_MONTY = 127 }

Public Member Functions
	VertexFitObject (const char *name_, double x, double y, double z)
	Constructor.

	VertexFitObject (const VertexFitObject &rhs)
	Copy Constructor.

VertexFitObject &	operator= (const VertexFitObject &rhs)
	assignment

virtual VertexFitObject *	copy () const
	Return a new copy of itself.

virtual VertexFitObject &	assign (const BaseFitObject &source)
	Assign from anther object, if of same type. More...

virtual	~VertexFitObject ()
	Destructor.

virtual int	getNPar () const
	Get total number of parameters of this FitObject.

virtual const char *	getParamName (int ilocal) const
	Get object's name. More...

virtual void	getVertexEx (ThreeVector &p) const
	Get vertex into existing 3-vector.

virtual ThreeVector	getVertex () const
	Get vertex.

virtual void	getVertexDerivativeEx (int ilocal, ThreeVector &p) const
	Get derivative of vertex w.r.t. parameter ilocal into existing 3-vector.

virtual ThreeVector	getVertexDerivative (int ilocal) const
	Get derivative of vertex w.r.t. parameter ilocal.

virtual void	getDerivatives (double der[], int idim) const

virtual std::ostream &	print (std::ostream &os) const
	print object to ostream More...

virtual TrackParticleFitObject *	getTrack (int i) const
	get track i

virtual void	addTrack (TrackParticleFitObject *track, bool inbound, bool measured)
	add track More...

virtual void	addConstraints (BaseFitter &fitter, int mask=THE_FULL_MONTY)
	Create constraints and add them to a BaseFit object.

virtual ThreeVector	estimatePosition ()
	Estimate vertex position.

virtual void	initForFit ()
	Initialize this object and attatched tracks for fit with initial estimates.

virtual double	getFirstDerivative_Meta_Local (int iMeta, int ilocal, int metaSet) const

virtual double	getSecondDerivative_Meta_Local (int iMeta, int ilocal, int jlocal, int metaSet) const

Public Member Functions inherited from BaseFitObject
	BaseFitObject ()
	Default constructor.

	BaseFitObject (const BaseFitObject &rhs)
	Copy constructor. More...

BaseFitObject &	operator= (const BaseFitObject &rhs)
	Assignment. More...

virtual	~BaseFitObject ()
	Virtual destructor.

virtual bool	setParam (int ilocal, double par_, bool measured_, bool fixed_=false)
	Set value and measured flag of parameter i; return: significant change. More...

virtual bool	setParam (int ilocal, double par_)
	Set value of parameter ilocal; return: significant change. More...

virtual bool	updateParams (double p[], int idim)
	Read values from global vector, readjust vector; return: significant change. More...

virtual bool	setMParam (int ilocal, double mpar_)
	Set measured value of parameter ilocal; return: success. More...

virtual bool	setError (int ilocal, double err_)
	Set error of parameter ilocal; return: success. More...

virtual bool	setCov (int ilocal, int jlocal, double cov_)
	Set covariance of parameters ilocal and jlocal; return: success. More...

virtual bool	setGlobalParNum (int ilocal, int iglobal)
	Set number of parameter ilocal in global list return true signals OK. More...

virtual bool	fixParam (int ilocal, bool fix=true)
	Fix a parameter (fix=true), or release it (fix=false) More...

virtual bool	releaseParam (int ilocal)
	Release a parameter. More...

virtual bool	isParamFixed (int ilocal) const
	Returns whether parameter is fixed. More...

virtual double	getParam (int ilocal) const
	Get current value of parameter ilocal. More...

virtual const char *	getName () const
	Get object's name.

virtual void	setName (const char *name_)
	Set object's name.

virtual double	getMParam (int ilocal) const
	Get measured value of parameter ilocal. More...

virtual double	getError (int ilocal) const
	Get error of parameter ilocal. More...

virtual double	getCov (int ilocal, int jlocal) const
	Get covariance between parameters ilocal and jlocal. More...

virtual double	getRho (int ilocal, int jlocal) const
	Get correlation coefficient between parameters ilocal and jlocal. More...

virtual bool	isParamMeasured (int ilocal) const
	Get measured flag for parameter ilocal. More...

virtual int	getGlobalParNum (int ilocal) const
	Get global parameter number of parameter ilocal. More...

virtual int	getNMeasured () const
	Get number of measured parameters of this FitObject.

virtual int	getNUnmeasured () const
	Get number of unmeasured parameters of this FitObject.

virtual int	getNFree () const
	Get number of free parameters of this FitObject.

virtual int	getNFixed () const
	Get number of fixed parameters of this FitObject.

virtual double	getChi2 () const
	Get chi squared from measured and fitted parameters.

virtual double	getDChi2DParam (int ilocal) const
	Get derivative of chi squared w.r.t. parameter ilocal. More...

virtual double	getD2Chi2DParam2 (int ilocal, int jlocal) const
	Get second derivative of chi squared w.r.t. parameters ilocal1 and ilocal2. More...

virtual std::ostream &	printParams (std::ostream &os) const
	print the parameters and errors More...

virtual std::ostream &	printRhoValues (std::ostream &os) const
	print the correlation coefficients More...

virtual std::ostream &	print1stDerivatives (std::ostream &os) const
	print the 1st derivatives wrt metaSet 0 (E, px, py, pz) More...

virtual std::ostream &	print2ndDerivatives (std::ostream &os) const
	print the 2nd derivatives wrt metaSet 0 (E, px, py, pz) More...

virtual void	invalidateCache () const
	invalidate any cached quantities

virtual void	addToGlobCov (double *glcov, int idim) const
	Add covariance matrix elements to global covariance matrix of size idim x idim. More...

virtual void	addToGlobalChi2DerVector (double *y, int idim) const
	Add derivatives of chi squared to global derivative vector. More...

virtual void	addToGlobalChi2DerMatrix (double *M, int idim) const
	Add 2nd derivatives of chi squared to global derivative matrix. More...

virtual void	addToGlobalChi2DerVector (double *y, int idim, double lambda, double der[], int metaSet) const
	Add derivatives of momentum vector to global derivative vector. More...

virtual void	addTo1stDerivatives (double M[], int idim, double der[], int kglobal, int metaSet) const

virtual void	addTo2ndDerivatives (double der2[], int idim, double factor[], int metaSet) const

virtual void	addTo2ndDerivatives (double M[], int idim, double lambda, double der[], int metaSet) const

virtual void	initCov ()

virtual double	getError2 (double der[], int metaset) const

Protected Types
enum	{ NPAR = 3 }
	init covariance matrix to dummy values More...

typedef std::vector < TrackDescriptor >	TContainer

typedef TContainer::iterator	TIterator

typedef std::vector < BaseConstraint * >	CContainer

typedef CContainer::iterator	CIterator

Protected Member Functions
virtual void	updateCache () const

virtual void	addVertexConstraints (BaseFitter &fitter, int axis)
	generate vertex constraints

virtual void	addMomentumConstraint (BaseFitter &fitter, int axis)
	generate momentum constraints

Protected Member Functions inherited from BaseFitObject
virtual bool	calculateCovInv () const
	Calculate the inverse of the covariance matrix.

Protected Attributes
TContainer	tracks

CContainer	constraints

Protected Attributes inherited from BaseFitObject
char *	name

double	par [BaseDefs::MAXPAR]
	fit parameters

double	mpar [BaseDefs::MAXPAR]
	measured parameters

bool	measured [BaseDefs::MAXPAR]
	measured flag

bool	fixed [BaseDefs::MAXPAR]
	fixed flag

int	globalParNum [BaseDefs::MAXPAR]
	global paramter number for each parameter

double	cov [BaseDefs::MAXPAR][BaseDefs::MAXPAR]
	local covariance matrix

double	covinv [BaseDefs::MAXPAR][BaseDefs::MAXPAR]
	inverse pf local covariance matrix

bool	covinvvalid
	flag for valid inverse covariance matrix

bool	cachevalid
	flag for valid cache

Additional Inherited Members
Static Protected Attributes inherited from BaseFitObject
static const double	eps2 = 0.0001

Related Functions inherited from BaseFitObject
std::ostream &	operator<< (std::ostream &os, const BaseFitObject &bfo)
	Prints out a BaseFitObject, using its print method. More...

Detailed Description

Class that represents vertices.

A VertexFitObject represents a vertex, parametrized by its coordinates (x, y, z).

A VertexFitObject is a BaseFitObject, and therefore the vertex coordinates can enter a fit, either as measured values for a measured (primary) vertex, or as unmeasured values for a decay vertex.

Additionally, a VertexFitObject keeps a list of outgoing tracks and knows its incoming track (if any), which enables the VertexFitObject to set a list of constraints (VertexConstraint and TrackMomentumConstraint objects) for a fitter object.

Author:Benno List, Jenny List

Date:: 2008/01/30 09:14:55

Author:: blist

Member Enumeration Documentation

anonymous enum

protected

init covariance matrix to dummy values

Calculate the inverse of the covariance matrix Calculate chi2 Copy another VertexFitObject Number of parameters

Member Function Documentation

void VertexFitObject::addTrack	(	TrackParticleFitObject *	track,
		bool	inbound,
		bool	measured
	)

virtual

add track

Parameters

track	The track
inbound	Is track decaying vertex (inbound=true), or originating?
measured	Is this a measured track?

VertexFitObject & VertexFitObject::assign ( const BaseFitObject & source )

virtual

Assign from anther object, if of same type.

Parameters

source The source object

Reimplemented from BaseFitObject.

References BaseFitObject::assign().

Referenced by operator=(), and VertexFitObject().

const char * VertexFitObject::getParamName ( int ilocal ) const

virtual

Get object's name.

Set object's name Get name of parameter ilocal

Parameters

ilocal Local parameter number

Reimplemented from BaseFitObject.

std::ostream & VertexFitObject::print ( std::ostream & os ) const

virtual

print object to ostream

Parameters

os	The output stream

Implements BaseFitObject.

References BaseFitObject::getName(), and BaseFitObject::printParams().

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

Classes

Public Types

Public Member Functions

Protected Types

Protected Member Functions

Protected Attributes

Additional Inherited Members

Detailed Description

Member Enumeration Documentation

Member Function Documentation