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RooHistPdf.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#ifndef ROO_HIST_PDF
17#define ROO_HIST_PDF
18
19#include "RooAbsPdf.h"
20#include "RooRealProxy.h"
21#include "RooSetProxy.h"
22#include "RooAICRegistry.h"
23#include "RooDataHist.h"
24
25#include <list>
26
27class RooRealVar;
28class RooAbsReal;
29
30class RooHistPdf : public RooAbsPdf {
31public:
33 RooHistPdf(const char *name, const char *title, const RooArgSet& vars, const RooDataHist& dhist, Int_t intOrder=0);
34 RooHistPdf(const char *name, const char *title, const RooArgList& pdfObs, const RooArgList& histObs, const RooDataHist& dhist, Int_t intOrder=0);
35 RooHistPdf(const char *name, const char *title, const RooArgSet& vars,
36 std::unique_ptr<RooDataHist> dhist, int intOrder=0);
37 RooHistPdf(const char *name, const char *title, const RooArgList& pdfObs, const RooArgList& histObs,
38 std::unique_ptr<RooDataHist> dhist, int intOrder=0);
39 RooHistPdf(const RooHistPdf& other, const char* name=nullptr);
40 TObject* clone(const char* newname) const override { return new RooHistPdf(*this,newname); }
41
43 // Return RooDataHist that is represented
44 return *_dataHist ;
45 }
46 const RooDataHist& dataHist() const {
47 // Return RooDataHist that is represented
48 return *_dataHist ;
49 }
50
51 /// Replaces underlying RooDataHist with a clone, which is now owned, and returns the clone.
52 /// If the underlying RooDataHist is already owned, then that is returned instead of being cloned.
53 RooDataHist* cloneAndOwnDataHist(const char* newname="");
54
56 // Set histogram interpolation order
57 _intOrder = order ;
58 }
60 // Return histogram interpolation order
61 return _intOrder ;
62 }
63
64 Int_t getAnalyticalIntegral(RooArgSet& allVars, RooArgSet& analVars, const char* rangeName=nullptr) const override ;
65 double analyticalIntegral(Int_t code, const char* rangeName=nullptr) const override ;
66
67 bool forceAnalyticalInt(const RooAbsArg& dep) const override;
68
69 void setCdfBoundaries(bool flag) {
70 // Set use of special boundary conditions for c.d.f.s
71 _cdfBoundaries = flag ;
72 }
73 bool getCdfBoundaries() const {
74 // If true, special boundary conditions for c.d.f.s are used
75 return _cdfBoundaries ;
76 }
77
78 void setUnitNorm(bool flag) {
79 // Declare contents to have unit normalization
80 _unitNorm = flag ;
81 }
82 bool haveUnitNorm() const {
83 // Return true if contents is declared to be unit normalized
84 return _unitNorm ;
85 }
86
87 bool selfNormalized() const override { return _unitNorm ; }
88
89 Int_t getMaxVal(const RooArgSet& vars) const override ;
90 double maxVal(Int_t code) const override ;
91
92 std::list<double>* plotSamplingHint(RooAbsRealLValue& obs, double xlo, double xhi) const override ;
93 std::list<double>* binBoundaries(RooAbsRealLValue& /*obs*/, double /*xlo*/, double /*xhi*/) const override ;
94 bool isBinnedDistribution(const RooArgSet&) const override { return _intOrder==0 ; }
95
96 void doEval(RooFit::EvalContext &) const override;
97
98 void translate(RooFit::Detail::CodeSquashContext &ctx) const override;
99 std::string
100 buildCallToAnalyticIntegral(int code, const char *rangeName, RooFit::Detail::CodeSquashContext &ctx) const override;
101
102 protected:
103 bool areIdentical(const RooDataHist& dh1, const RooDataHist& dh2) ;
104
105 bool importWorkspaceHook(RooWorkspace& ws) override ;
106
107 double evaluate() const override;
108 double totalVolume() const ;
109 friend class RooAbsCachedPdf ;
110 double totVolume() const ;
111
112 RooArgSet _histObsList; ///< List of observables defining dimensions of histogram
113 RooSetProxy _pdfObsList; ///< List of observables mapped onto histogram observables
114 RooDataHist* _dataHist = nullptr; ///< Unowned pointer to underlying histogram
115 std::unique_ptr<RooDataHist> _ownedDataHist; ///<! Owned pointer to underlying histogram
116 mutable RooAICRegistry _codeReg ; ///<! Auxiliary class keeping tracking of analytical integration code
117 Int_t _intOrder = 0; ///< Interpolation order
118 bool _cdfBoundaries = false; ///< Use boundary conditions for CDFs.
119 mutable double _totVolume = 0.0; ///<! Total volume of space (product of ranges of observables)
120 bool _unitNorm = false; ///< Assume contents is unit normalized (for use as pdf cache)
121
122private:
123
124 friend class RooHistFunc;
125
126 static bool forceAnalyticalInt(RooArgSet const& pdfObsList, RooAbsArg const& dep);
127
128 static Int_t getAnalyticalIntegral(RooArgSet& allVars,
129 RooArgSet& analVars,
130 const char* rangeName,
131 RooArgSet const& histObsList,
132 RooArgSet const& pdfObsList,
133 Int_t intOrder) ;
134
135 static double analyticalIntegral(Int_t code,
136 const char* rangeName,
137 RooArgSet const& histObsList,
138 RooArgSet const& pdfObsList,
140 bool histFuncMode) ;
141
142 static std::list<double>* plotSamplingHint(RooDataHist const& dataHist,
143 RooArgSet const& pdfObsList,
144 RooArgSet const& histObsList,
145 int intOrder,
146 RooAbsRealLValue& obs,
147 double xlo,
148 double xhi);
149
150 static void rooHistTranslateImpl(RooAbsArg const *klass, RooFit::Detail::CodeSquashContext &ctx, int intOrder,
151 RooDataHist const *dataHist, const RooArgSet &obs, bool correctForBinSize, bool cdfBoundaries);
152
153 static std::string rooHistIntegralTranslateImpl(int code, RooAbsArg const *klass, RooDataHist const *dataHist,
154 const RooArgSet &obs, bool histFuncMode);
155
156private:
157 inline void initializeOwnedDataHist(std::unique_ptr<RooDataHist> &&dataHist)
158 {
159 _ownedDataHist = std::move(dataHist);
160 }
161
162 ClassDefOverride(RooHistPdf,4) // Histogram based PDF
163};
164
165#endif
#define ClassDefOverride(name, id)
Definition Rtypes.h:346
char name[80]
Definition TGX11.cxx:110
Utility class for operator p.d.f classes that keeps track of analytical integration codes and associa...
Common abstract base class for objects that represent a value and a "shape" in RooFit.
Definition RooAbsArg.h:79
Abstract base class for p.d.f.s that need or want to cache their evaluate() output in a RooHistPdf de...
Abstract interface for all probability density functions.
Definition RooAbsPdf.h:40
Abstract base class for objects that represent a real value that may appear on the left hand side of ...
Abstract base class for objects that represent a real value and implements functionality common to al...
Definition RooAbsReal.h:59
RooArgList is a container object that can hold multiple RooAbsArg objects.
Definition RooArgList.h:22
RooArgSet is a container object that can hold multiple RooAbsArg objects.
Definition RooArgSet.h:24
Container class to hold N-dimensional binned data.
Definition RooDataHist.h:40
A class to maintain the context for squashing of RooFit models into code.
A real-valued function sampled from a multidimensional histogram.
Definition RooHistFunc.h:31
A propability density function sampled from a multidimensional histogram.
Definition RooHistPdf.h:30
Int_t getInterpolationOrder() const
Definition RooHistPdf.h:59
void setUnitNorm(bool flag)
Definition RooHistPdf.h:78
RooArgSet _histObsList
List of observables defining dimensions of histogram.
Definition RooHistPdf.h:112
Int_t _intOrder
Interpolation order.
Definition RooHistPdf.h:117
bool forceAnalyticalInt(const RooAbsArg &dep) const override
bool areIdentical(const RooDataHist &dh1, const RooDataHist &dh2)
RooDataHist * _dataHist
Unowned pointer to underlying histogram.
Definition RooHistPdf.h:114
bool _cdfBoundaries
Use boundary conditions for CDFs.
Definition RooHistPdf.h:118
static std::string rooHistIntegralTranslateImpl(int code, RooAbsArg const *klass, RooDataHist const *dataHist, const RooArgSet &obs, bool histFuncMode)
std::list< double > * binBoundaries(RooAbsRealLValue &, double, double) const override
Return sampling hint for making curves of (projections) of this function as the recursive division st...
double totVolume() const
Return the total volume spanned by the observables of the RooHistPdf.
void initializeOwnedDataHist(std::unique_ptr< RooDataHist > &&dataHist)
Definition RooHistPdf.h:157
bool importWorkspaceHook(RooWorkspace &ws) override
Check if our datahist is already in the workspace.
std::string buildCallToAnalyticIntegral(int code, const char *rangeName, RooFit::Detail::CodeSquashContext &ctx) const override
This function defines the analytical integral translation for the class.
RooSetProxy _pdfObsList
List of observables mapped onto histogram observables.
Definition RooHistPdf.h:113
bool isBinnedDistribution(const RooArgSet &) const override
Tests if the distribution is binned. Unless overridden by derived classes, this always returns false.
Definition RooHistPdf.h:94
double maxVal(Int_t code) const override
Return maximum value for set of observables identified by code assigned in getMaxVal.
double analyticalIntegral(Int_t code, const char *rangeName=nullptr) const override
Return integral identified by 'code'.
void translate(RooFit::Detail::CodeSquashContext &ctx) const override
This function defines a translation for each RooAbsReal based object that can be used to express the ...
RooAICRegistry _codeReg
! Auxiliary class keeping tracking of analytical integration code
Definition RooHistPdf.h:116
TObject * clone(const char *newname) const override
Definition RooHistPdf.h:40
void setCdfBoundaries(bool flag)
Definition RooHistPdf.h:69
std::list< double > * plotSamplingHint(RooAbsRealLValue &obs, double xlo, double xhi) const override
Return sampling hint for making curves of (projections) of this function as the recursive division st...
RooDataHist & dataHist()
Definition RooHistPdf.h:42
bool haveUnitNorm() const
Definition RooHistPdf.h:82
Int_t getMaxVal(const RooArgSet &vars) const override
Only handle case of maximum in all variables.
double _totVolume
! Total volume of space (product of ranges of observables)
Definition RooHistPdf.h:119
RooDataHist * cloneAndOwnDataHist(const char *newname="")
Replaces underlying RooDataHist with a clone, which is now owned, and returns the clone.
std::unique_ptr< RooDataHist > _ownedDataHist
! Owned pointer to underlying histogram
Definition RooHistPdf.h:115
double totalVolume() const
void doEval(RooFit::EvalContext &) const override
Base function for computing multiple values of a RooAbsReal.
static void rooHistTranslateImpl(RooAbsArg const *klass, RooFit::Detail::CodeSquashContext &ctx, int intOrder, RooDataHist const *dataHist, const RooArgSet &obs, bool correctForBinSize, bool cdfBoundaries)
bool getCdfBoundaries() const
Definition RooHistPdf.h:73
bool selfNormalized() const override
Shows if a PDF is self-normalized, which means that no attempt is made to add a normalization term.
Definition RooHistPdf.h:87
Int_t getAnalyticalIntegral(RooArgSet &allVars, RooArgSet &analVars, const char *rangeName=nullptr) const override
Determine integration scenario.
const RooDataHist & dataHist() const
Definition RooHistPdf.h:46
double evaluate() const override
Return the current value: The value of the bin enclosing the current coordinates of the observables,...
void setInterpolationOrder(Int_t order)
Definition RooHistPdf.h:55
bool _unitNorm
Assume contents is unit normalized (for use as pdf cache)
Definition RooHistPdf.h:120
Variable that can be changed from the outside.
Definition RooRealVar.h:37
Persistable container for RooFit projects.
Mother of all ROOT objects.
Definition TObject.h:41