Go4Fit
Class TGo4FitterConfig

class TGo4FitterConfig

derived from TGo4FitterAction

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.

Constructor Summary

TGo4FitterConfig()           Default constructor.

TGo4FitterConfig(const char * iName, const char * iTitle)           Creates TGo4FiierConfig object with given name and Title.

Destructor Summary
virtual synchronized	~TGo4FitterConfig()           Destroys TGo4FitterConfig object.

Method Summary
void	AddParNew(const char * ParName, Double_t iValue)           Add new parameter with given name and initial value.
void	AddResult(const char * Expression)           Add expression for calculating result value.
void	AddResult(Double_t Value)           Add constant value as result value.
virtual void	DoAction(TGo4FitterAbstract* Fitter)           Do configuration action.
protected TGo4FitDependency*	FindDepen(const char * FullName, TObjArray* list)
virtual Bool_t	GetParEpsilon(const char * ParName, Double_t& Epsilon)           Return kTRUE, if parameter ParName has explicit configuration for epsilon value in minimization.
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.
TGo4FitParsList&	GetParsCfg()           Get list of TGo4FitParameter objects, used as explicit configuration for minimizing.
TObjArray&	GetParsDepend()           Returns list of TGo4FitDependency objects, used for dependencies calculations.
TObjArray&	GetParsInit()           Returns list of TGo4FitDependency objects, used for parameters initialization.
TGo4FitParsList&	GetParsNew()           Get list of TGo4FitParameter objects, which can be used in minimization and dependency calculations.
TObjArray&	GetResults()           Returns list of TGo4FitDependency objects, used for calculating result values for fitter.
protected TGo4FitParameter*	MakeParForProperties(const char * ParName)
virtual const void	Print(Option_t* option)           Print information on standard output.
void	SetParDepend(const char * FullName, const char * iExpression)           Set dependency expression for parameter.
virtual Bool_t	SetParEpsilon(const char * ParName, Double_t Epsilon)           Sets epsilon for parameter ParName.
virtual Bool_t	SetParFixed(const char * ParName, Bool_t iFixed)           Sets, that parameter with ParName should be fixed or not.
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.
virtual Bool_t	SetParRange(const char * ParName, Double_t RangeMin, Double_t RangeMax)           Sets valid range for parameter ParName.

Methods inherited from class Go4Fit.TGo4FitterAction

CanChangeFitter, NeedBuffers

Methods inherited from class Go4Fit.TGo4FitNamed

GetFullName, GetOwner, GetOwnerFullName, SetOwner

Methods inherited from class TNamed

operator=, Clear, Clone, Compare, Copy, FillBuffer, GetName, GetTitle, Hash, IsSortable, SetName, SetNameTitle, SetTitle, ls, Sizeof, Class, Class_Name, Class_Version, Dictionary, IsA, ShowMembers, Streamer, StreamerNVirtual, DeclFileName, ImplFileLine, ImplFileName, DeclFileLine

Field Detail

fbFixedByDefault

protected Bool_t fbFixedByDefault

Determine, if all parameters should be fixed by default.

protected TGo4FitParsList fxParsCfg

List of parameters objects, used for alternative configuration of parameters, which should be fitted.

protected TObjArray fxParsDepend

Array of dependencies (TGo4FitDependency) for introducing dependency between fitted parameters.

protected TObjArray fxParsInit

Array of dependencies for parameters initialization.

protected TGo4FitParsList fxParsNew

List of parameters object, which can be used in dependency calculations and minimization.

protected TObjArray fxResults

Array of TGo4FitDependency objects, which repersent equations to calculate result values in fitter.

public TGo4FitterConfig()

Default constructor.

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

Creates TGo4FiierConfig object with given name and Title.

public virtual synchronized ~TGo4FitterConfig()

Destroys TGo4FitterConfig object.

public void AddParNew(const char * ParName, Double_t iValue)

Add new parameter with given name and initial value.
This parameter can be used later in dependency calculations in minimizations.

public void AddResult(const char * Expression)

Add expression for calculating result value.

public void AddResult(Double_t Value)

Add constant value as result value.

public virtual void DoAction(TGo4FitterAbstract* Fitter)

Do configuration action.
Calls TGoFitterAbstract::ApplyConfig(this) method.

protected TGo4FitDependency* FindDepen(const char * FullName, TObjArray* list)

public virtual Bool_t GetParEpsilon(const char * ParName, Double_t& Epsilon)

Return kTRUE, if parameter ParName has explicit configuration for epsilon value in minimization.
ParName may be standard or full name of parameter.

public virtual Bool_t GetParFixed(const char * ParName)

Return kTRUE, if parameter ParName should be fixed in minimization.
ParName may be standard or full name of parameter.

public 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.
ParName may be standard or full name of parameter.

public TGo4FitParsList& GetParsCfg()

Get list of TGo4FitParameter objects, used as explicit configuration for minimizing.

public TObjArray& GetParsDepend()

Returns list of TGo4FitDependency objects, used for dependencies calculations.

public TObjArray& GetParsInit()

Returns list of TGo4FitDependency objects, used for parameters initialization.

public TGo4FitParsList& GetParsNew()

Get list of TGo4FitParameter objects, which can be used in minimization and dependency calculations.

public TObjArray& GetResults()

Returns list of TGo4FitDependency objects, used for calculating result values for fitter.

protected TGo4FitParameter* MakeParForProperties(const char * ParName)

public virtual const void Print(Option_t* option)

Print information on standard output.

public void SetParDepend(const char * FullName, const char * iExpression)

Set dependency expression for parameter.
Expression may use fitter parameters like
Gauss2.Pos+Gaus3.Pos/10
Dependency expression calculated every time before fit function calculations.
FullName should be full name of parameter.

public virtual Bool_t SetParEpsilon(const char * ParName, Double_t Epsilon)

Sets epsilon for parameter ParName.
ParName may be standard or full name of parameter.

public virtual Bool_t SetParFixed(const char * ParName, Bool_t iFixed)

Sets, that parameter with ParName should be fixed or not.
ParName may be standard or full name of parameter.

public void SetParInit(const char * FullName, Double_t iValue)

Set initial value for parameter.
Init value sets to parameter once when configuration activating.
FullName should be full name of parameter.

public void SetParInit(const char * FullName, const char * iExpression)

Set initial value for parameter, calculated from expression.
Expression may use fitter parameters like
Gauss2.Pos+Gaus3.Pos/10
Initializing expression calculated once when config activated.
FullName should be full name of parameter.

public virtual Bool_t SetParRange(const char * ParName, Double_t RangeMin, Double_t RangeMax)

Sets valid range for parameter ParName.
ParName may be standard or full name of parameter.

Association Links

to Class TGo4FitParsList

List of parameters objects, used for alternative configuration of parameters, which should be fitted.

to Class TGo4FitParsList

List of parameters object, which can be used in dependency calculations and minimization.

to Class TObjArray

Array of dependencies for parameters initialization.

to Class TObjArray

Array of dependencies (TGo4FitDependency) for introducing dependency between fitted parameters.

to Class TObjArray

Array of TGo4FitDependency objects, which repersent equations to calculate result values in fitter.

to Class TGo4FitDependency

Label for pars dependency

Supplier Cardinality 0..*

Type aggregation

to Class TGo4FitDependency

Label for pars init

Supplier Cardinality 0..*

Type aggregation

to Class TGo4FitParsList

Supplier Cardinality 0..*

Type aggregation