TGo4FitterConfig Class Reference

Fitter configuration action By default all fitter parameters are used in optimization as independent from each other. More...

#include <TGo4FitterConfig.h>

Inheritance diagram for TGo4FitterConfig:

List of all members.


Public Member Functions
	TGo4FitterConfig ()
	Default constructor.
	TGo4FitterConfig (const char iName, const char iTitle)
	Creates TGo4FiierConfig object with given name and Title.
virtual	~TGo4FitterConfig ()
	Destroys TGo4FitterConfig object.
void	AddParNew (const char *ParName, Double_t iValue=0)
	Add new parameter with given name and initial value.
virtual Bool_t	SetParFixed (const char *ParName, Bool_t iFixed=kTRUE)
	Sets, that parameter with ParName should be fixed or not.
virtual Bool_t	SetParRange (const char *ParName, Double_t RangeMin, Double_t RangeMax)
	Sets valid range for parameter ParName.
virtual Bool_t	SetParEpsilon (const char *ParName, Double_t Epsilon)
	Sets epsilon for parameter ParName.
virtual Bool_t	GetParFixed (const char *ParName)
	Return kTRUE, if parameter ParName should be fixed in minimization.
virtual Bool_t	GetParRange (const char *ParName, Double_t &RangeMin, Double_t &RangeMax)
	Return kTRUE, if parameter ParName has explicit configuration for valid range in minimization.
virtual Bool_t	GetParEpsilon (const char *ParName, Double_t &Epsilon)
	Return kTRUE, if parameter ParName has explicit configuration for epsilon value in minimization.
void	SetParInit (const char *FullName, Double_t iValue)
	Set initial value for parameter.
void	SetParInit (const char FullName, const char iExpression)
	Set initial value for parameter, calculated from expression.
void	SetParDepend (const char FullName, const char iExpression)
	Set dependency expression for parameter.
void	AddResult (const char *Expression)
	Add expression for calculating result value.
void	AddResult (Double_t Value)
	Add constant value as result value.
TGo4FitParsList &	GetParsCfg ()
	Get list of TGo4FitParameter objects, used as explicit configuration for minimizing.
TGo4FitParsList &	GetParsNew ()
	Get list of TGo4FitParameter objects, which can be used in minimization and dependency calculations.
TObjArray &	GetParsInit ()
	Returns list of TGo4FitDependency objects, used for parameters initialization.
TObjArray &	GetParsDepend ()
	Returns list of TGo4FitDependency objects, used for dependencies calculations.
TObjArray &	GetResults ()
	Returns list of TGo4FitDependency objects, used for calculating result values for fitter.
virtual void	DoAction (TGo4FitterAbstract *Fitter)
	Do configuration action.
virtual void	Print (Option_t *option) const
	Print information on standard output.
Protected Member Functions
TGo4FitParameter *	MakeParForProperties (const char *ParName)
TGo4FitDependency *	FindDepen (const char FullName, TObjArray list)
Protected Attributes
TGo4FitParsList	fxParsCfg
	List of parameters objects, used for alternative configuration of parameters, which should be fitted.
TGo4FitParsList	fxParsNew
	List of parameters object, which can be used in dependency calculations and minimization.
TObjArray	fxParsInit
	Array of dependencies for parameters initialization.
TObjArray	fxParsDepend
	Array of dependencies (TGo4FitDependency) for introducing dependency between fitted parameters.
TObjArray	fxResults
	Array of TGo4FitDependency objects, which repersent equations to calculate result values in fitter.
Bool_t	fbFixedByDefault
	Determine, if all parameters should be fixed by default.

Detailed Description

Fitter configuration action By default all fitter parameters are used in optimization as independent from each other.

But there are a lot of situation, then one would like to introduce some kind of dependency between parameters. For instance, two lines have constant difference in positions. In other cases some of the parameter properties should be redefined without touching parameter object itself. For such a cases configuration class TGo4FitterConfig was introduced. There are several routines of TGo4FitterConfig class, which provide useful fitter configurations: SetParFixed() - fix value of given parameter; SetParRange() - fix range for given parameter; SetParEpsilon() - set initial error for given parameter. SetParInit() - set initial value for parameter (can be double value or expression); SetParDepend() - set dependency of given parameter via expression; AddParNew() - create new parameter, which can be used in expressions. Several configuration objects can be added to actions list. It may be useful, if several minimization routines are used. Then before each minimization action new configuration can be applied.

Definition at line 36 of file TGo4FitterConfig.h.

Constructor & Destructor Documentation

TGo4FitterConfig::TGo4FitterConfig ( )

Default constructor.

Definition at line 24 of file TGo4FitterConfig.cxx.

TGo4FitterConfig::TGo4FitterConfig	(	const char *	iName,
		const char *	iTitle
	)

Creates TGo4FiierConfig object with given name and Title.

Definition at line 29 of file TGo4FitterConfig.cxx.

References fxParsDepend, fxParsInit, and fxResults.

TGo4FitterConfig::~TGo4FitterConfig ( ) [virtual]

Destroys TGo4FitterConfig object.

Definition at line 37 of file TGo4FitterConfig.cxx.

Member Function Documentation

void TGo4FitterConfig::AddParNew	(	const char *	ParName,
		Double_t	iValue = `0`
	)			`[inline]`

Add new parameter with given name and initial value.

This parameter can be used later in dependency calculations in minimizations.

Definition at line 58 of file TGo4FitterConfig.h.

References TGo4FitParsList::CreatePar(), and fxParsNew.

Bool_t TGo4FitterConfig::SetParFixed	(	const char *	ParName,
		Bool_t	iFixed = `kTRUE`
	)			`[virtual]`

Sets, that parameter with ParName should be fixed or not.