Roo2DKeysPdf

class Roo2DKeysPdf : public RooAbsPdf

    private:

      Double_t evaluateFull(Double_t thisX, Double_t thisY) const
      Double_t g(Double_t var1, Double_t* _var1, Double_t sigma1, Double_t var2, Double_t* _var2, Double_t sigma2) const
      Double_t highBoundaryCorrection(Double_t thisVar, Double_t thisH, Double_t high, Double_t tVar) const
      Double_t lowBoundaryCorrection(Double_t thisVar, Double_t thisH, Double_t low, Double_t tVar) const

    public:

                       Roo2DKeysPdf(const char* name, const char* title, RooAbsReal& xx, RooAbsReal& yy, RooDataSet& data, TString options = a, Double_t widthScaleFactor = 1.0)
                       Roo2DKeysPdf(const Roo2DKeysPdf& other, const char* name = "0")
               virtual ~Roo2DKeysPdf()
                 Int_t calculateBandWidth(Int_t kernel = -999)
        static TClass* Class()
      virtual TObject* clone(const char* newname) const
      virtual Double_t evaluate() const
                 Int_t getBandWidthType() const
              Double_t getMean(const char* axis) const
                  void getOptions() const
              Double_t getSigma(const char* axis) const
       virtual TClass* IsA() const
                 Int_t loadDataSet(RooDataSet& data, TString options)
                  void PrintInfo(ostream&) const
                  void setOptions(TString options)
                  void setWidthScaleFactor(Double_t widthScaleFactor)
          virtual void ShowMembers(TMemberInspector& insp, char* parent)
          virtual void Streamer(TBuffer& b)
                  void StreamerNVirtual(TBuffer& b)
                  void writeHistToFile(char* outputFile, const char* histName) const
                  void writeNTupleToFile(char* outputFile, const char* name) const
                  void writeToFile(char* outputFile, const char* name) const

Data Members

    private:

      Double_t* _x                 
      Double_t* _hx                
      Double_t* _y                 
      Double_t* _hy                
       Double_t _norm              
       Double_t _xMean             the (x,y) mean and sigma are properties of the data, not of the PDF
       Double_t _xSigma            
       Double_t _yMean             
       Double_t _ySigma            
       Double_t _n                 coefficient of the kernel estimation sum
       Double_t _n16               pow(_nEvents, -1/6)
       Double_t _sqrt2pi           
       Double_t _2pi               = M_PI*2
       Double_t _lox               
       Double_t _hix               
       Double_t _loy               
       Double_t _hiy               
       Double_t _xoffset           
       Double_t _yoffset           
       Double_t _widthScaleFactor  allow manipulation of the bandwidth by a scale factor
          Int_t _nEvents           
          Int_t _BandWidthType     
          Int_t _MirrorAtBoundary  
          Int_t _debug             
          Int_t _verbosedebug      
          Int_t _vverbosedebug     

    public:

      RooRealProxy x  
      RooRealProxy y  

 use the cacheing intrinsic in RFC to bypass the grid and remove
 the grid and extrapolation approximation in the kernel estimation method
implementation - cheers Wouter :)

 Set the value of a scale factor to modify the bandwidth by. The default value for this is unity.
 Modification of 'normal' bandwidths is useful when the data are not 'normally distributed',
 otherwise one expects little departure from that behavior.  Note that both the normal and adaptive
 bandwidth selections are modified by this factor.  Useful for systematic studies.
           ***********
           *IMPORTANT* The kernel is proportional to 1/widthScaleFactor.
           ***********