Logo ROOT   6.10/09
Reference Guide
RooChiSquarePdf.h
Go to the documentation of this file.
1 /*****************************************************************************
2  * Project: RooFit *
3  * Package: RooFitModels *
4  * File: $Id$
5  * Authors: *
6  * Kyle Cranmer
7  * *
8  * *
9  * Redistribution and use in source and binary forms, *
10  * with or without modification, are permitted according to the terms *
11  * listed in LICENSE (http://roofit.sourceforge.net/license.txt) *
12  *****************************************************************************/
13 #ifndef ROO_CHISQUARE
14 #define ROO_CHISQUARE
15 
16 #include "RooAbsPdf.h"
17 #include "RooRealProxy.h"
18 
19 class RooRealVar;
20 class RooArgList ;
21 
22 class RooChiSquarePdf : public RooAbsPdf {
23 public:
24 
25  RooChiSquarePdf() ;
26  RooChiSquarePdf(const char *name, const char *title,
27  RooAbsReal& x, RooAbsReal& ndof) ;
28 
29  RooChiSquarePdf(const RooChiSquarePdf& other, const char* name = 0);
30  virtual TObject* clone(const char* newname) const { return new RooChiSquarePdf(*this, newname); }
31  inline virtual ~RooChiSquarePdf() { }
32 
33 
34  Int_t getAnalyticalIntegral(RooArgSet& allVars, RooArgSet& analVars, const char* rangeName=0) const ;
35  Double_t analyticalIntegral(Int_t code, const char* rangeName=0) const ;
36 
37 
38 private:
39 
42 
43  Double_t evaluate() const;
44 
45  ClassDef(RooChiSquarePdf,1) // Chi Square distribution (eg. the PDF )
46 };
47 
48 #endif
virtual ~RooChiSquarePdf()
Double_t evaluate() const
int Int_t
Definition: RtypesCore.h:41
Double_t analyticalIntegral(Int_t code, const char *rangeName=0) const
Implements the actual analytical integral(s) advertised by getAnalyticalIntegral. ...
Int_t getAnalyticalIntegral(RooArgSet &allVars, RooArgSet &analVars, const char *rangeName=0) const
No analytical calculation available (yet) of integrals over subranges.
Double_t x[n]
Definition: legend1.C:17
RooRealProxy _ndof
#define ClassDef(name, id)
Definition: Rtypes.h:297
RooRealVar represents a fundamental (non-derived) real valued object.
Definition: RooRealVar.h:36
The PDF of the Chi Square distribution for n degrees of freedom.
double Double_t
Definition: RtypesCore.h:55
RooAbsReal is the common abstract base class for objects that represent a real value and implements f...
Definition: RooAbsReal.h:53
virtual TObject * clone(const char *newname) const
Mother of all ROOT objects.
Definition: TObject.h:37
RooAbsPdf is the abstract interface for all probability density functions The class provides hybrid a...
Definition: RooAbsPdf.h:41
RooRealProxy is the concrete proxy for RooAbsReal objects A RooRealProxy is the general mechanism to ...
Definition: RooRealProxy.h:23
RooRealProxy _x