RooHistPdf

class description - source file - inheritance tree (.pdf)

class RooHistPdf : public RooAbsPdf

Inheritance Chart:

TObject

TNamed

RooPrintable

RooAbsArg

RooAbsReal

RooAbsPdf

RooHistPdf


    protected:

      virtual Double_t evaluate() const

    public:

                       RooHistPdf(const char* name, const char* title, const RooArgSet& vars, const RooDataHist& dhist, Int_t intOrder = 0)
                       RooHistPdf(const RooHistPdf& other, const char* name = "0")
               virtual ~RooHistPdf()
      virtual Double_t analyticalIntegral(Int_t code, const char* rangeName = "0") const
        static TClass* Class()
      virtual TObject* clone(const char* newname) const
         virtual Int_t getAnalyticalIntegral(RooArgSet& allVars, RooArgSet& analVars, const char* rangeName = "0") const
       virtual TClass* IsA() const
          virtual void ShowMembers(TMemberInspector& insp, char* parent)
          virtual void Streamer(TBuffer& b)
                  void StreamerNVirtual(TBuffer& b)

Data Members


    protected:

         RooSetProxy _depList   List of dependents defining dimensions of histogram
        RooDataHist* _dataHist  Unowned pointer to underlying histogram
      RooAICRegistry _codeReg   Auxiliary class keeping tracking of analytical integration code
               Int_t _intOrder  Interpolation order

Class Description

 RooHistPdf implements a probablity density function sample from a
 multidimensional histogram. The histogram distribution is explicitly
 normalized by RooHistPdf and can have an arbitrary number of real or
 discrete dimensions.

RooHistPdf(const char *name, const char *title, const RooArgSet& vars, const RooDataHist& dhist, Int_t intOrder) : RooAbsPdf(name,title), _depList("depList","List of dependents",this), _dataHist((RooDataHist*)&dhist), _codeReg(10), _intOrder(intOrder)

 Constructor from a RooDataHist. The variable listed in 'vars' control the dimensionality of the
 PDF. Any additional dimensions present in 'dhist' will be projected out. RooDataHist dimensions
 can be either real or discrete. See RooDataHist::RooDataHist for details on the binning.
 RooHistPdf neither owns or clone 'dhist' and the user must ensure the input histogram exists
 for the entire life span of this PDF.

RooHistPdf(const RooHistPdf& other, const char* name) : RooAbsPdf(other,name), _depList("depList",this,other._depList), _dataHist(other._dataHist), _codeReg(other._codeReg), _intOrder(other._intOrder)

 Copy constructor

Double_t evaluate() const

 Return the current value: The value of the bin enclosing the current coordinates
 of the dependents, normalized by the histograms contents

Int_t getAnalyticalIntegral(RooArgSet& allVars, RooArgSet& analVars, const char* rangeName) const

 Determine integration scenario. RooHistPdf can perform all integrals over
 its dependents analytically via partial or complete summation of the input histogram.

Double_t analyticalIntegral(Int_t code, const char* /*rangeName*/) const

 Return integral identified by 'code'. The actual integration
 is deferred to RooDataHist::sum() which implements partial
 or complete summation over the histograms contents

Inline Functions

               void ~RooHistPdf()
           TObject* clone(const char* newname) const
            TClass* Class()
            TClass* IsA() const
               void ShowMembers(TMemberInspector& insp, char* parent)
               void Streamer(TBuffer& b)
               void StreamerNVirtual(TBuffer& b)

Last CVS Update: v 1.22 2005/06/20 15:44:53 wverkerke

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