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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
21#include "RooCmdArg.h"
22#include "RooDataSet.h"
23#include "RooAbsPdf.h"
24#include "RooNumIntConfig.h"
25#include <list>
26class RooAbsIntegrator ;
27
28
30public:
31
32 // Constructors, assignment etc
33 RooXYChi2Var() ;
34 RooXYChi2Var(const char *name, const char* title, RooAbsReal& func, RooDataSet& data, bool integrate=false) ;
35 RooXYChi2Var(const char *name, const char* title, RooAbsReal& func, RooDataSet& data, RooRealVar& yvar, bool integrate=false) ;
36 RooXYChi2Var(const char *name, const char* title, RooAbsPdf& extPdf, RooDataSet& data, bool integrate=false) ;
37 RooXYChi2Var(const char *name, const char* title, RooAbsPdf& extPdf, RooDataSet& data, RooRealVar& yvar, bool integrate=false) ;
38
39 RooXYChi2Var(const RooXYChi2Var& other, const char* name=0);
40 TObject* clone(const char* newname) const override { return new RooXYChi2Var(*this,newname); }
41
42 RooAbsTestStatistic* create(const char *name, const char *title, RooAbsReal& pdf, RooAbsData& adata,
43 const RooArgSet&, RooAbsTestStatistic::Configuration const&) override {
44 // Virtual constructor
45 return new RooXYChi2Var(name,title,pdf,(RooDataSet&)adata) ;
46 }
47
48 ~RooXYChi2Var() override;
49
50 double defaultErrorLevel() const override {
51 // The default error level for MINUIT error analysis for a chi^2 is 1.0
52 return 1.0 ;
53 }
54
57
58protected:
59
60 bool allowFunctionCache() override {
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
66 RooArgSet requiredExtraObservables() const override ;
67
68 double fy() const ;
69
70 bool _extended ; ///< Is the input function and extended p.d.f.
71 bool _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
76 void initialize() ;
77 void initIntegrator() ;
78 double xErrorContribution(double ydata) const ;
79
80 double evaluatePartition(std::size_t firstEvent, std::size_t lastEvent, std::size_t stepSize) const override ;
81
82 RooNumIntConfig _intConfig ; ///< Numeric integrator configuration for integration of function over bin
83 RooAbsReal* _funcInt = nullptr; ///<! Function integral
84 std::list<RooAbsBinning*> _binList ; ///<! Bin ranges
85
86 ClassDefOverride(RooXYChi2Var,1) // Chi^2 function of p.d.f w.r.t a unbinned dataset with X and Y values
87};
88
89
90#endif
#define ClassDefOverride(name, id)
Definition: Rtypes.h:339
char name[80]
Definition: TGX11.cxx:110
RooAbsData is the common abstract base class for binned and unbinned datasets.
Definition: RooAbsData.h:62
RooAbsIntegrator is the abstract interface for integrators of real-valued functions that implement th...
RooAbsOptTestStatistic is the abstract base class for test statistics objects that evaluate a functio...
RooAbsReal is the common abstract base class for objects that represent a real value and implements f...
Definition: RooAbsReal.h:64
RooAbsTestStatistic is the abstract base class for all test statistics.
RooArgSet is a container object that can hold multiple RooAbsArg objects.
Definition: RooArgSet.h:57
RooDataSet is a container class to hold unbinned data.
Definition: RooDataSet.h:55
RooNumIntConfig holds the configuration parameters of the various numeric integrators used by RooReal...
RooRealVar represents a variable that can be changed from the outside.
Definition: RooRealVar.h:40
RooXYChi2Var implements a simple chi^2 calculation from an unbinned dataset with values x,...
Definition: RooXYChi2Var.h:29
RooAbsTestStatistic * create(const char *name, const char *title, RooAbsReal &pdf, RooAbsData &adata, const RooArgSet &, RooAbsTestStatistic::Configuration const &) override
Definition: RooXYChi2Var.h:42
double fy() const
Return function value requested bu present configuration.
RooAbsReal * _funcInt
! Function integral
Definition: RooXYChi2Var.h:83
std::list< RooAbsBinning * > _binList
! Bin ranges
Definition: RooXYChi2Var.h:84
bool _extended
Is the input function and extended p.d.f.
Definition: RooXYChi2Var.h:70
void initIntegrator()
Initialize bin content integrator.
RooRealVar * _yvar
Y variable if so designated.
Definition: RooXYChi2Var.h:73
RooXYChi2Var()
coverity[UNINIT_CTOR]
RooArgSet requiredExtraObservables() const override
double evaluatePartition(std::size_t firstEvent, std::size_t lastEvent, std::size_t stepSize) const override
Calculate chi^2 in partition from firstEvent to lastEvent using given stepSize.
double defaultErrorLevel() const override
Definition: RooXYChi2Var.h:50
bool _integrate
Is integration over the bin volume requested.
Definition: RooXYChi2Var.h:71
RooArgSet _rrvArgs
Set of real-valued observables.
Definition: RooXYChi2Var.h:74
double xErrorContribution(double ydata) const
Calculate contribution to internal error due to error on 'x' coordinates at point i.
const RooNumIntConfig & binIntegratorConfig() const
Definition: RooXYChi2Var.h:56
void initialize()
Common constructor initialization.
RooNumIntConfig _intConfig
Numeric integrator configuration for integration of function over bin.
Definition: RooXYChi2Var.h:82
~RooXYChi2Var() override
Destructor.
bool allowFunctionCache() override
Definition: RooXYChi2Var.h:60
TObject * clone(const char *newname) const override
Definition: RooXYChi2Var.h:40
RooNumIntConfig & binIntegratorConfig()
Definition: RooXYChi2Var.h:55
Mother of all ROOT objects.
Definition: TObject.h:37