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Reference Guide
RooSimGenContext.h
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1 /*****************************************************************************
2  * Project: RooFit *
3  * Package: RooFitCore *
4  * File: $Id: RooSimGenContext.h,v 1.12 2007/05/11 09:11:30 verkerke Exp $
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_SIM_GEN_CONTEXT
17 #define ROO_SIM_GEN_CONTEXT
18 
19 #include "TList.h"
20 #include "RooAbsGenContext.h"
21 #include "RooArgSet.h"
22 #include <vector>
23 
24 class RooSimultaneous;
25 class RooDataSet;
27 
29 public:
30  RooSimGenContext(const RooSimultaneous &model, const RooArgSet &vars, const RooDataSet *prototype= 0,
31  const RooArgSet* auxProto=0, Bool_t _verbose= kFALSE);
32  virtual ~RooSimGenContext();
33  virtual void setProtoDataOrder(Int_t* lut) ;
34 
35  virtual void attach(const RooArgSet& params) ;
36 
37  virtual void printMultiline(std::ostream &os, Int_t content, Bool_t verbose=kFALSE, TString indent="") const ;
38 
39 
40 protected:
41 
42  virtual void initGenerator(const RooArgSet &theEvent);
43  virtual void generateEvent(RooArgSet &theEvent, Int_t remaining);
44 
45  RooDataSet* createDataSet(const char* name, const char* title, const RooArgSet& obs) ;
46  void updateFractions() ;
47 
48  RooSimGenContext(const RooSimGenContext& other) ;
49 
50  RooAbsCategoryLValue* _idxCat ; // Clone of index category
51  RooArgSet* _idxCatSet ; // Owner of index category components
52  const RooDataSet *_prototype; // Prototype data set
53  const RooSimultaneous *_pdf ; // Original PDF
54  std::vector<RooAbsGenContext*> _gcList ; // List of component generator contexts
55  std::vector<int> _gcIndex ; // Index value corresponding to component
56  Bool_t _haveIdxProto ; // Flag set if generation of index is requested
57  TString _idxCatName ; // Name of index category
58  Int_t _numPdf ; // Number of generated PDFs
59  Double_t* _fracThresh ; //[_numPdf] Fraction threshold array
60  RooDataSet* _protoData ; //! Prototype dataset
61 
62  RooArgSet _allVarsPdf ; // All pdf variables
63  TIterator* _proxyIter ; // Iterator over pdf proxies
64 
65  ClassDef(RooSimGenContext,0) // Context for efficiently generating a dataset from a RooSimultaneous PDF
66 };
67 
68 #endif
TIterator * _proxyIter
const RooDataSet * _prototype
virtual ~RooSimGenContext()
Destructor. Delete all owned subgenerator contexts.
RooDataSet * createDataSet(const char *name, const char *title, const RooArgSet &obs)
Create an empty dataset to hold the events that will be generated.
Basic string class.
Definition: TString.h:129
int Int_t
Definition: RtypesCore.h:41
bool Bool_t
Definition: RtypesCore.h:59
RooArgSet _allVarsPdf
Prototype dataset.
Iterator abstract base class.
Definition: TIterator.h:30
void updateFractions()
No action needed if we have a proto index.
#define ClassDef(name, id)
Definition: Rtypes.h:297
virtual void generateEvent(RooArgSet &theEvent, Int_t remaining)
Generate event appropriate for current index state.
RooArgSet * _idxCatSet
RooSimGenContext(const RooSimultaneous &model, const RooArgSet &vars, const RooDataSet *prototype=0, const RooArgSet *auxProto=0, Bool_t _verbose=kFALSE)
Constructor of specialized generator context for RooSimultaneous p.d.f.s.
virtual void attach(const RooArgSet &params)
Attach the index category clone to the given event buffer.
RooAbsGenContext is the abstract base class for generator contexts of RooAbsPdf objects.
RooAbsCategoryLValue is the common abstract base class for objects that represent a discrete value th...
std::vector< int > _gcIndex
RooSimGenContext is an efficient implementation of the generator context specific for RooSimultaneous...
bool verbose
virtual void initGenerator(const RooArgSet &theEvent)
Perform one-time initialization of generator context.
RooDataSet is a container class to hold unbinned data.
Definition: RooDataSet.h:29
const Bool_t kFALSE
Definition: RtypesCore.h:92
Double_t * _fracThresh
double Double_t
Definition: RtypesCore.h:55
const RooSimultaneous * _pdf
virtual void printMultiline(std::ostream &os, Int_t content, Bool_t verbose=kFALSE, TString indent="") const
Detailed printing interface.
std::vector< RooAbsGenContext * > _gcList
RooAbsCategoryLValue * _idxCat
RooDataSet * _protoData
virtual void setProtoDataOrder(Int_t *lut)
Set the traversal order of the prototype data to that in the given lookup table.
RooSimultaneous facilitates simultaneous fitting of multiple PDFs to subsets of a given dataset...