[u/mrichter/AliRoot.git] / PWG2 / EBYE / LRC / AliLRCFit.h

//-------------------------------------------------------------------------
//    Description: 
//    This class include into LRC library for Long-Range Correlation analysis
//    it makes fit of the 1d histogramm
//    calculates ax+b coefficients with error and hi square
//    Origin: Petr Naumenko, SPbSU-CERN, Petr.Naoumenko@cern.ch
//    Andrey Ivanov (SPbSU-CERN), Igor Altsebeev (SPbSU-CERN) 
//-------------------------------------------------------------------------

#ifndef ALILRCFIT_H
#define ALILRCFIT_H

/*  See cxx source for full Copyright notice */
#include "TObject.h"

/* $Id$ */

class TH1D;

class AliLRCFit:public TObject{
    public:
    	AliLRCFit();
    	AliLRCFit(TH1D * const h, double xshift = -1.0);
    	AliLRCFit(TH1D * const h, double xmin, double xmax, double xshift = -1.0);
   	virtual ~AliLRCFit();
	double GetFitRange() const; 
	double Geta() const;
	double Getb() const;
	double Getda() const;
	double Getdb() const;
	double Getda1() const;
	double Getdb1() const;
	double Gethi2() const;
	double Getf() const;
	double Getxmin() const;
	double Getxmax() const;
	int GetN() const;

    private:
    	int fN; //Number of bins
	int fTrueN; //Number of bins between xmin and xmax
    	int fNmin; //xmin bin
	int fNmax; //xmax bin 
    	double fS1; // work wariable
    	double fSz; // work wariable
    	double fSfz; // work wariable
    	double fSf; // work wariable
    	double fSf2; // work wariable
	double fhi2; // hi square
    	double fw; // work wariable
	double fz; // work wariable
    	double f; // work wariable
	double fnum; // work wariable
	double fdf; // work wariable
	double fdelta; // work wariable
	double fa; // coefficient a of ax+b
	double fb; // coefficient b of ax+b
	double fda; //error of coefficient a of ax+b
	double fdb; //error of coefficient b of ax+b
	double fda1;  // work wariable
	double fdb1; // work wariable
	double fxmin; // xmin
	double fxmax; // xmax
	ClassDef(AliLRCFit,0)                 // macro for rootcint

};

#endif
Commit	Line	Data
adf00ba6	1	//-------------------------------------------------------------------------
	2	// Description:
	3	// This class include into LRC library for Long-Range Correlation analysis
	4	// it makes fit of the 1d histogramm
	5	// calculates ax+b coefficients with error and hi square
	6	// Origin: Petr Naumenko, SPbSU-CERN, Petr.Naoumenko@cern.ch
ec6ab54b	7	// Andrey Ivanov (SPbSU-CERN), Igor Altsebeev (SPbSU-CERN)
adf00ba6	8	//-------------------------------------------------------------------------
adf00ba6	9
ec6ab54b	10	#ifndef ALILRCFIT_H
ec6ab54b	11	#define ALILRCFIT_H
adf00ba6	12
adf00ba6	13	/* See cxx source for full Copyright notice */
ec6ab54b	14	#include "TObject.h"
adf00ba6	15
	16	/* $Id$ */
	17
adf00ba6	18	class TH1D;
adf00ba6	19
ec6ab54b	20	class AliLRCFit:public TObject{
	21	public:
	22	AliLRCFit();
	23	AliLRCFit(TH1D * const h, double xshift = -1.0);
	24	AliLRCFit(TH1D * const h, double xmin, double xmax, double xshift = -1.0);
	25	virtual ~AliLRCFit();
	26	double GetFitRange() const;
	27	double Geta() const;
	28	double Getb() const;
	29	double Getda() const;
	30	double Getdb() const;
	31	double Getda1() const;
	32	double Getdb1() const;
	33	double Gethi2() const;
	34	double Getf() const;
	35	double Getxmin() const;
	36	double Getxmax() const;
	37	int GetN() const;
	38
	39	private:
	40	int fN; //Number of bins
	41	int fTrueN; //Number of bins between xmin and xmax
	42	int fNmin; //xmin bin
	43	int fNmax; //xmax bin
	44	double fS1; // work wariable
	45	double fSz; // work wariable
	46	double fSfz; // work wariable
	47	double fSf; // work wariable
	48	double fSf2; // work wariable
	49	double fhi2; // hi square
	50	double fw; // work wariable
	51	double fz; // work wariable
	52	double f; // work wariable
	53	double fnum; // work wariable
	54	double fdf; // work wariable
	55	double fdelta; // work wariable
	56	double fa; // coefficient a of ax+b
	57	double fb; // coefficient b of ax+b
	58	double fda; //error of coefficient a of ax+b
	59	double fdb; //error of coefficient b of ax+b
	60	double fda1; // work wariable
	61	double fdb1; // work wariable
	62	double fxmin; // xmin
	63	double fxmax; // xmax
	64	ClassDef(AliLRCFit,0) // macro for rootcint
adf00ba6	65
adf00ba6	66	};
	67
	68	#endif
	69