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RooXYChi2Var.h
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1 /*****************************************************************************
2  * Project: RooFit *
3  * Package: RooFitCore *
4  * File: $Id$
5  * Authors: *
6  * WV, Wouter Verkerke, UC Santa Barbara, verkerke@slac.stanford.edu *
7  * DK, David Kirkby, UC Irvine, dkirkby@uci.edu *
8  * *
9  * Copyright (c) 2000-2005, Regents of the University of California *
10  * and Stanford University. All rights reserved. *
11  * *
12  * Redistribution and use in source and binary forms, *
13  * with or without modification, are permitted according to the terms *
14  * listed in LICENSE (http://roofit.sourceforge.net/license.txt) *
15  *****************************************************************************/
16 
17 #ifndef ROO_XY_CHI2_VAR
18 #define ROO_XY_CHI2_VAR
19 
20 #include "RooAbsOptTestStatistic.h"
21 #include "RooCmdArg.h"
22 #include "RooDataSet.h"
23 #include "RooAbsPdf.h"
24 #include "RooNumIntConfig.h"
25 #include <list>
26 class RooAbsIntegrator ;
27 
28 
30 public:
31 
32  // Constructors, assignment etc
33  RooXYChi2Var() ;
34  RooXYChi2Var(const char *name, const char* title, RooAbsReal& func, RooDataSet& data, Bool_t integrate=kFALSE) ;
35  RooXYChi2Var(const char *name, const char* title, RooAbsReal& func, RooDataSet& data, RooRealVar& yvar, Bool_t integrate=kFALSE) ;
36  RooXYChi2Var(const char *name, const char* title, RooAbsPdf& extPdf, RooDataSet& data, Bool_t integrate=kFALSE) ;
37  RooXYChi2Var(const char *name, const char* title, RooAbsPdf& extPdf, RooDataSet& data, RooRealVar& yvar, Bool_t integrate=kFALSE) ;
38 
39  RooXYChi2Var(const RooXYChi2Var& other, const char* name=0);
40  virtual TObject* clone(const char* newname) const { return new RooXYChi2Var(*this,newname); }
41 
42  virtual RooAbsTestStatistic* create(const char *name, const char *title, RooAbsReal& pdf, RooAbsData& adata,
43  const RooArgSet&, const char*, const char*,Int_t, RooFit::MPSplit,Bool_t, Bool_t, Bool_t) {
44  // Virtual constructor
45  return new RooXYChi2Var(name,title,pdf,(RooDataSet&)adata) ;
46  }
47 
48  virtual ~RooXYChi2Var();
49 
50  virtual Double_t defaultErrorLevel() const {
51  // The default error level for MINUIT error analysis for a chi^2 is 1.0
52  return 1.0 ;
53  }
54 
56  const RooNumIntConfig& binIntegratorConfig() const { return _intConfig ; }
57 
58 protected:
59 
61  // Disable function (component) caching if integration is requested as the function
62  // will be evaluated at coordinates other than the points in the dataset
63  return !_integrate ;
64  }
65 
67 
68  Double_t fy() const ;
69 
70  Bool_t _extended ; // Is the input function and extended p.d.f.
71  Bool_t _integrate ; // Is integration over the bin volume requested
72 
73  RooRealVar* _yvar ; // Y variable if so designated
74  RooArgSet _rrvArgs ; // Set of real-valued observables
75  TIterator* _rrvIter ; //! Iterator over set of real-valued observables
76 
77  void initialize() ;
78  void initIntegrator() ;
79  Double_t xErrorContribution(Double_t ydata) const ;
80 
81  virtual Double_t evaluatePartition(std::size_t firstEvent, std::size_t lastEvent, std::size_t stepSize) const ;
82 
83  RooNumIntConfig _intConfig ; // Numeric integrator configuration for integration of function over bin
84  RooAbsReal* _funcInt ; //! Function integral
85  std::list<RooAbsBinning*> _binList ; //! Bin ranges
86 
87  ClassDef(RooXYChi2Var,1) // Chi^2 function of p.d.f w.r.t a unbinned dataset with X and Y values
88 };
89 
90 
91 #endif
TIterator * _rrvIter
Definition: RooXYChi2Var.h:75
RooAbsIntegrator is the abstract interface for integrators of real-valued functions that implement th...
RooNumIntConfig holds the configuration parameters of the various numeric integrators used by RooReal...
RooArgSet requiredExtraObservables() const
const RooNumIntConfig & binIntegratorConfig() const
Definition: RooXYChi2Var.h:56
Bool_t _extended
Definition: RooXYChi2Var.h:70
RooArgSet is a container object that can hold multiple RooAbsArg objects.
Definition: RooArgSet.h:28
virtual RooAbsTestStatistic * create(const char *name, const char *title, RooAbsReal &pdf, RooAbsData &adata, const RooArgSet &, const char *, const char *, Int_t, RooFit::MPSplit, Bool_t, Bool_t, Bool_t)
Definition: RooXYChi2Var.h:42
void initialize()
Iterator over set of real-valued observables.
Iterator abstract base class.
Definition: TIterator.h:30
RooXYChi2Var()
coverity[UNINIT_CTOR]
#define ClassDef(name, id)
Definition: Rtypes.h:322
RooRealVar * _yvar
Definition: RooXYChi2Var.h:73
std::list< RooAbsBinning * > _binList
Function integral.
Definition: RooXYChi2Var.h:85
RooRealVar represents a variable that can be changed from the outside.
Definition: RooRealVar.h:35
virtual TObject * clone(const char *newname) const
Definition: RooXYChi2Var.h:40
virtual Double_t defaultErrorLevel() const
Definition: RooXYChi2Var.h:50
RooNumIntConfig _intConfig
Definition: RooXYChi2Var.h:83
RooAbsReal * _funcInt
Definition: RooXYChi2Var.h:84
Bool_t _integrate
Definition: RooXYChi2Var.h:71
virtual ~RooXYChi2Var()
Destructor.
void initIntegrator()
Initialize bin content integrator.
RooAbsData is the common abstract base class for binned and unbinned datasets.
Definition: RooAbsData.h:44
RooDataSet is a container class to hold unbinned data.
Definition: RooDataSet.h:33
const Bool_t kFALSE
Definition: RtypesCore.h:90
virtual Double_t evaluatePartition(std::size_t firstEvent, std::size_t lastEvent, std::size_t stepSize) const
Calculate chi^2 in partition from firstEvent to lastEvent using given stepSize.
RooAbsReal is the common abstract base class for objects that represent a real value and implements f...
Definition: RooAbsReal.h:60
RooAbsTestStatistic is the abstract base class for all test statistics.
Mother of all ROOT objects.
Definition: TObject.h:37
Double_t xErrorContribution(Double_t ydata) const
Calculate contribution to internal error due to error on &#39;x&#39; coordinates at point i...
RooAbsPdf, the base class of all PDFs
Definition: RooAbsPdf.h:40
RooNumIntConfig & binIntegratorConfig()
Definition: RooXYChi2Var.h:55
Double_t fy() const
Return function value requested bu present configuration.
RooArgSet _rrvArgs
Definition: RooXYChi2Var.h:74
Bool_t allowFunctionCache()
Definition: RooXYChi2Var.h:60
char name[80]
Definition: TGX11.cxx:109
RooAbsOptTestStatistic is the abstract base class for test statistics objects that evaluate a functio...