Go4Fit
Class TGo4FitDataRidge

class TGo4FitDataRidge

derived from TGo4FitData

Special object to approxiamte ridges on multi-dimensional histograms.

Ridge means that some coordinate in multidimensional histograms can be represented as function of another coordinate(s) like y = f(x). If one has histogram, build in (x,y) space, one can try to approximate function f by several way.

First simplest way, which works for two-dimensional way is to build TProfile from TH2 object, averaging data along y axis. Then TGo4FitDataProfile can be used to approximate TProfile by any kind of functional dependency.

Another way is usage of TGo4FitDataRidge object. It selects one of histogram coordinate and use histogram as a set of measured points y(x) with different statistical weights, reverse proportinal to bin content of histogram at (x,y). Then this set of points can be again approximate of any kind of functional dependency from one coordinate. This simplest case can be extend to N-dimensions. In this case one of coordinate is a functions of the rest. This means, that this corrdinate can be approximate by function with N-1 coordinates.

To obtain data, TGo4FitDataRidge object internally uses another TGo4FitData, which should provide histogram. Currently only TGo4FitDataHistogram object can be used for this purposes.

Fields inherited from class TNamed

fName, fTitle

Fields inherited from class Go4Fit.TGo4FitSlotList

fbUpdateSlotList, fxSlotList

Constructor Summary

TGo4FitDataRidge()           Default constructor.

TGo4FitDataRidge(const char * iName, TGo4FitData* Data, Int_t SelectedAxis)           Creates TGo4FitDataRidge object with given name.

Destructor Summary
virtual synchronized	~TGo4FitDataRidge()           Destroys TGo4FitDataRidge object

Method Summary
virtual void	FillSlotList(TSeqCollection* list)           Add pointer on slot, which should contain TGo4FitData object, to list of slots.
const TGo4FitData*	GetData()           Returns pointer on TGo4FitData object.
Int_t	GetSelectedAxis()           Returns number of selected axis.
TGo4FitDataIter*	MakeIter()           Create TGo4FitDataRidgeIter iterator, assosiated with given data object..
virtual const void	Print(Option_t* option)           Print information to standard output.
void	SetData(TGo4FitData* iData, Bool_t Owned)           Sets pointer on TGo4FitData object and ownership flag.
void	SetSelectedAxis(Int_t naxis)           Sets number of axis, which selected as "ridge altitude".

Methods inherited from class Go4Fit.TGo4FitData

AddAxisTrans, ApplyRangesForModelMask, BuffersAllocated, CanAmplTouch, CreateDrawObject, DefineBinsSize, DefineDimensions, DefineScaleMinMax, Finalize, GetAxisTrans, GetAxisTransSlot, GetBinsDevs, GetBinsResult, GetBinsSize, GetBinsValues, GetDataType, GetExcludeLessThen, GetFullIndex, GetIndexesSize, GetNumberOfTransSlots, GetScalesSize, GetScaleValues, GetSigmaSource, GetSigmaValue, GetUseBinScale, GetWidthValues, Initialize, IsAnyDataTransform, IsCompatibleData, SetAxisTrans, SetAxisTransNeeded, SetExcludeLessThen, SetNumberOfTransSlots, SetSigmaSource, SetSigmaValue, SetUseBinScale

Methods inherited from class Go4Fit.TGo4FitComponent

AddRangeCondition, AddRangeCut, 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, Get, GetPar, GetParEpsilon, GetParError, GetParFixed, GetParFullName, GetParIndex, GetParName, GetParRange, GetParsValues, GetParValue, InsertPar, IsAllParsFixed, MemorizePars, NumFixedPars, NumFreePars, NumPars, 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, FindSlot, GetSlot, GetSlotList, IsEmptySlots, IsObjectInSlots, NumSlots, PrepareSlotsForWriting, SetObject, SetObject, SetSaveFlagForObjects, SetUpdateSlotList

Field Detail

fiSelectedAxis

protected Int_t fiSelectedAxis

Number of selected as ridge axis.

protected TGo4FitSlot fxData

Slot for TGo4FitData object.

public TGo4FitDataRidge()

Default constructor.

public TGo4FitDataRidge(const char * iName, TGo4FitData* Data, Int_t SelectedAxis)

Creates TGo4FitDataRidge object with given name.
Pointer on TGo4FitData object, which should provide histogramic data, can be specified.
Also axis number, which uses as ridge coordinate, can be specified. By default y-axis is used as ridge.

public virtual synchronized ~TGo4FitDataRidge()

Destroys TGo4FitDataRidge object

public virtual void FillSlotList(TSeqCollection* list)

Add pointer on slot, which should contain TGo4FitData object, to list of slots.

public const TGo4FitData* GetData()

Returns pointer on TGo4FitData object.

public Int_t GetSelectedAxis()

Returns number of selected axis.

public TGo4FitDataIter* MakeIter()

Create TGo4FitDataRidgeIter iterator, assosiated with given data object..

public virtual const void Print(Option_t* option)

Print information to standard output.

public void SetData(TGo4FitData* iData, Bool_t Owned)

Sets pointer on TGo4FitData object and ownership flag.

public void SetSelectedAxis(Int_t naxis)

Sets number of axis, which selected as "ridge altitude".

Association Links

to Class TGo4FitSlot

Slot for TGo4FitData object.