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Reference Guide
RooStepFunction.h
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1 
2 
3 /*****************************************************************************
4  * Project: RooFit *
5  * Package: RooFitModels *
6  * File: $Id$
7  * Authors: *
8  * Tristan du Pree, Nikhef, Amsterdam, tdupree@nikhef.nl *
9  * *
10  * Copyright (c) 2000-2005, Stanford University. All rights reserved. *
11  *
12  * *
13  * Redistribution and use in source and binary forms, *
14  * with or without modification, are permitted according to the terms *
15  * listed in LICENSE (http://roofit.sourceforge.net/license.txt) *
16  *****************************************************************************/
17 #ifndef ROO_STEP_FUNCTION
18 #define ROO_STEP_FUNCTION
19 
20 #include "TArrayD.h"
21 #include "RooAbsReal.h"
22 #include "RooRealProxy.h"
23 #include "RooListProxy.h"
24 
25 class RooRealVar;
26 class RooArgList ;
27 
28 class RooStepFunction : public RooAbsReal {
29  public:
30 
31  RooStepFunction() ;
32  RooStepFunction(const char *name, const char *title,
33  RooAbsReal& x, const RooArgList& coefList, const RooArgList& limits, Bool_t interpolate=kFALSE) ;
34 
35  RooStepFunction(const RooStepFunction& other, const char* name = 0);
36  virtual TObject* clone(const char* newname) const { return new RooStepFunction(*this, newname); }
37  virtual ~RooStepFunction() ;
38 
39  const RooArgList& coefficients() { return _coefList; }
40  const RooArgList& boundaries() { return _boundaryList; }
41 
42  protected:
43 
44  Double_t evaluate() const;
45 
46  private:
47 
52  TIterator* _coefIter ; //! do not persist
53  TIterator* _boundIter ; //! do not persist
54 
55  ClassDef(RooStepFunction,1) // Step Function
56 };
57 
58 #endif
Double_t evaluate() const
Transfer contents to vector for use below.
const RooArgList & boundaries()
bool Bool_t
Definition: RtypesCore.h:59
RooListProxy _coefList
RooListProxy _boundaryList
Iterator abstract base class.
Definition: TIterator.h:30
TIterator * _boundIter
do not persist
Double_t x[n]
Definition: legend1.C:17
#define ClassDef(name, id)
Definition: Rtypes.h:297
virtual TObject * clone(const char *newname) const
RooRealProxy _x
void interpolate(const ROOT::Math::Interpolator &itp, bool drawSame=false)
RooRealVar represents a fundamental (non-derived) real valued object.
Definition: RooRealVar.h:36
RooStepFunction()
Constructor.
RooListProxy is the concrete proxy for RooArgList objects.
Definition: RooListProxy.h:25
const Bool_t kFALSE
Definition: RtypesCore.h:92
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
const RooArgList & coefficients()
The Step Function is a binned function whose parameters are the heights of each bin.
TIterator * _coefIter
Mother of all ROOT objects.
Definition: TObject.h:37
virtual ~RooStepFunction()
Destructor.
RooRealProxy is the concrete proxy for RooAbsReal objects A RooRealProxy is the general mechanism to ...
Definition: RooRealProxy.h:23