Go4Fit
Class TGo4FitModelPolynom

class TGo4FitModelPolynom

derived from TGo4FitModel

Model objects, which reproduce component of polynomial function.

Expession can be written like:

Ampl * x^nx * y^ny * z^nz * ...

The order of polynomial function should be sets up in constructor like:

TGo4FitModelPolynom *p1 = new TGo4FitModelPolynom("Pol1",orderx,ordery,orderz);
or
TArrayD orders(5);
Orders[0] = 1.; Orders[1] = 0.; ...
TGo4FitModelPolynom *p2 = new TGo4FitModelPolynom("Pol2",Orders);

According to number of parameters in constructor TGo4FitModelPolynom has set of parameters "Order0", "Order1" and so on, representing polynom orders for axis x, y and so on correspondently. By default, these parameters are fixed and not fitted in optimizations. To change this default behavior, use:

p1->FindPar("Order0")->SetFixed(kFALSE);

TGo4FitModelPolynom class always has amplitude parameter, named "Ampl". It can be accessed by its name, for instance:

p1->FindPar("Ampl")->SetValue(1000.);

or

p1->GetAmplitudePar("Ampl")->SetValue(1000.);

GetAmplitudePar() method can be used in other models classes only if they create amplitude parameters, otherwise method returns 0.

Fields inherited from class TNamed

fName, fTitle

Fields inherited from class Go4Fit.TGo4FitSlotList

fbUpdateSlotList, fxSlotList

Constructor Summary

TGo4FitModelPolynom()           Default constructor.

TGo4FitModelPolynom(const char * iName, Double_t iOrderX)           Creates TGo4FitModelPolynom object with given name for 1-dim case.

TGo4FitModelPolynom(const char * iName, Double_t iOrderX, Double_t iOrderY)           Creates TGo4FitModelPolynom object with given name for 2-dim case.

TGo4FitModelPolynom(const char * iName, Double_t iOrderX, Double_t iOrderY, Double_t iOrderZ)           Creates TGo4FitModelPolynom object with given name for 3-dim case.

TGo4FitModelPolynom(const char * iName, const TArrayD& iPolynomOrders)           Creates TGo4FitModelPolynom object with given name for n-dim case.

Destructor Summary
virtual synchronized	~TGo4FitModelPolynom()           Destroys TGo4FitModelPolynom object.

Method Summary
virtual void	AfterEval()
virtual Bool_t	BeforeEval(Int_t NDimension)
private void	CreateOrdersPars(const Double_t* orders, Int_t startaxis, Int_t maxaxis, Int_t AtIndx)
virtual Double_t	EvalN(const Double_t* v)
Int_t	GetMaxNumAxis()           Returns maximum axis number (dimensions number) in polynom.
protected TString	GetOrderParName(Int_t naxis)
Double_t	GetPolynomOrder(Int_t naxis)           Get polynom order for specified axis.
virtual const void	Print(Option_t* option)           Print information on standard output.
Bool_t	SetMaxNumAxis(Int_t numaxis)           Sets number of dimensions (maximum axis numbers) in polynom.

Methods inherited from class Go4Fit.TGo4FitModel

AddModelToDataResult, AssignmentName, AssignToData, BuffersAllocated, ChangeDataNameInAssignments, ClearAssigmentTo, ClearAssignments, ClearAssignmentTo, ConnectToDataIfAssigned, Evaluate, Evaluate, Evaluate, Evaluate, EvaluateAndIntegrate, EvaluateAtPoint, EvaluateAtPoint, Finalize, Get, GetAssignedConnection, GetDataFullIndex, GetDataIndexesSize, GetGroupIndex, GetModelBins, GetPosition, GetPosPar, GetPosParIndex, GetRatioValueFor, GetWidth, GetWidthPar, GetWidthParIndex, Initialize, Integral, IsAssignTo, NeedIntegration, NumAssigments, NumPars, RebuildShape, SetBackgroundGroupIndex, SetGroupIndex, SetIntegrationsProperty, SetNeedToRebuild, SetPosition, SetWidth, UserFunction

Methods inherited from class Go4Fit.TGo4FitComponent

AddRangeCondition, AddRangeCut, CanAmplTouch, CheckRangeConditions, ClearRanges, CollectParsTo, ExcludeRange, GetAmplError, GetAmplFullName, GetAmplIndex, GetAmplName, GetAmplPar, GetAmplValue, GetNumRangeCondition, GetNumRangeCut, GetRangeCondition, GetRangeCut, GetRangeMax, GetRangeMin, GetUseBuffers, IsAnyRangeLimits, IsRangeCutExcluding, MakeAmpl, NewAmplitude, NewParameter, RemoveAmpl, RemoveRangeCondition, RemoveRangeCut, SetAmplError, SetAmplIndex, SetAmplValue, SetRange, SetRangeCondition, SetRangeCutExcluding, SetRangeMax, SetRangeMin, SetUseBuffers

Methods inherited from class Go4Fit.TGo4FitParsList

AddPar, CanRollbackPars, ClearPars, ClearParsBlocking, CreatePar, Find, Find, Find, FindPar, FindPar, FindPar, GetPar, GetParEpsilon, GetParError, GetParFixed, GetParFullName, GetParIndex, GetParName, GetParRange, GetParsValues, GetParValue, InsertPar, IsAllParsFixed, MemorizePars, NumFixedPars, NumFreePars, PrintPars, RememberPars, RemovePar, RemovePar, RemoveParByIndex, SetParEpsilon, SetParError, SetParFixed, SetParName, SetParRange, SetParsNames, SetParsOwner, SetParsValues, SetParsValues, SetParValue

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

Methods inherited from class Go4Fit.TGo4FitSlotList

CheckDuplicatesOnSlot, CheckObjects, ClearObjects, ClearSlot, ConnectSlots, ConnectSlots, FillSlotList, FindSlot, GetSlot, GetSlotList, IsEmptySlots, IsObjectInSlots, NumSlots, PrepareSlotsForWriting, SetObject, SetObject, SetSaveFlagForObjects, SetUpdateSlotList

Field Detail

fxAllOrders

private TArrayD* fxAllOrders

Temporary variable for EvalN() function.

private Int_t ndim

Temporary variable for EvalN() function.

private Double_t* orders

Temporary variable for EvalN() function.

public TGo4FitModelPolynom()

Default constructor.

public TGo4FitModelPolynom(const char * iName, Double_t iOrderX)

Creates TGo4FitModelPolynom object with given name for 1-dim case.
The order of polynom for x axis can be specified (0 by default).

public TGo4FitModelPolynom(const char * iName, Double_t iOrderX, Double_t iOrderY)

Creates TGo4FitModelPolynom object with given name for 2-dim case.
The order of polynom for x and y axises should be specified.

public TGo4FitModelPolynom(const char * iName, Double_t iOrderX, Double_t iOrderY, Double_t iOrderZ)

Creates TGo4FitModelPolynom object with given name for 3-dim case.
The order of polynom for x, y and z axises should be specified.

public TGo4FitModelPolynom(const char * iName, const TArrayD& iPolynomOrders)

Creates TGo4FitModelPolynom object with given name for n-dim case.
An array of polynoms orders for appropriate axis should be specified. The size of array will be a dimensions size of polynom. But the n-dim polynom can be used for m-dim case. If n>m, orders for missing axis will be set 0. If n

Method Detail

~TGo4FitModelPolynom

public virtual synchronized ~TGo4FitModelPolynom()

Destroys TGo4FitModelPolynom object.

Method Detail

AfterEval

public virtual void AfterEval()

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BeforeEval

public virtual Bool_t BeforeEval(Int_t NDimension)

---

CreateOrdersPars

private void CreateOrdersPars(const Double_t* orders, Int_t startaxis, Int_t maxaxis, Int_t AtIndx)

---

EvalN

public virtual Double_t EvalN(const Double_t* v)

---

GetMaxNumAxis

public Int_t GetMaxNumAxis()

Returns maximum axis number (dimensions number) in polynom.

---

GetOrderParName

protected TString GetOrderParName(Int_t naxis)

---

GetPolynomOrder

public Double_t GetPolynomOrder(Int_t naxis)

Get polynom order for specified axis.

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Print

public virtual const void Print(Option_t* option)

Print information on standard output.

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SetMaxNumAxis

public Bool_t SetMaxNumAxis(Int_t numaxis)

Sets number of dimensions (maximum axis numbers) in polynom.

Association Links

to Class TArrayD

Temporary variable for EvalN() function.

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30-06-2005