TGo4FitDataRidge Class Reference

Special object to approxiamte ridges on multi-dimensional histograms. More...

#include <TGo4FitDataRidge.h>

Inheritance diagram for TGo4FitDataRidge:


Public Member Functions
	TGo4FitDataRidge ()
	Default constructor.
	TGo4FitDataRidge (const char iName, TGo4FitData Data=0, Int_t SelectedAxis=1)
	Creates TGo4FitDataRidge object with given name.
virtual	~TGo4FitDataRidge ()
	Destroys TGo4FitDataRidge object.
void	SetData (TGo4FitData *iData, Bool_t Owned)
	Sets pointer on TGo4FitData object and ownership flag.
TGo4FitData *	GetData () const
	Returns pointer on TGo4FitData object.
void	SetSelectedAxis (Int_t naxis)
	Sets number of axis, which selected as "ridge altitude".
Int_t	GetSelectedAxis ()
	Returns number of selected axis.
TGo4FitDataIter *	MakeIter ()
	Create TGo4FitDataRidgeIter iterator, assosiated with given data object.
virtual void	FillSlotList (TSeqCollection *list)
	Add pointer on slot, which should contain TGo4FitData object, to list of slots.
virtual void	Print (Option_t *option) const
	Print information to standard output.
Protected Attributes
TGo4FitSlot	fxData
	Slot for TGo4FitData object.
Int_t	fiSelectedAxis
	Number of selected as ridge axis.

Detailed Description

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.

Definition at line 31 of file TGo4FitDataRidge.h.

Constructor & Destructor Documentation

TGo4FitDataRidge::TGo4FitDataRidge ( )

Default constructor.

Definition at line 21 of file TGo4FitDataRidge.cxx.

TGo4FitDataRidge::TGo4FitDataRidge	(	const char *	iName,
		TGo4FitData *	Data = `0`,
		Int_t	SelectedAxis = `1`
	)

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.

Definition at line 25 of file TGo4FitDataRidge.cxx.

References TGo4FitData::SetExcludeLessThen().

TGo4FitDataRidge::~TGo4FitDataRidge ( ) [virtual]

Destroys TGo4FitDataRidge object.

Definition at line 33 of file TGo4FitDataRidge.cxx.