library: libRooFit
#include "RooLinearVar.h"

RooLinearVar

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

class RooLinearVar : public RooAbsRealLValue

Inheritance Chart:

TObject

TNamed

RooPrintable

RooAbsArg

RooAbsReal

RooAbsLValue

RooAbsRealLValue

RooLinearVar


    protected:

      virtual Double_t evaluate() const

    public:

                                   RooLinearVar(const char* name, const char* title, RooAbsRealLValue& variable, const RooAbsReal& slope, const RooAbsReal& offset, const char* unit = "")
                                   RooLinearVar(const RooLinearVar& other, const char* name = "0")
                           virtual ~RooLinearVar()
                    static TClass* Class()
                  virtual TObject* clone(const char* newname) const
      virtual const RooAbsBinning& getBinning(const char* name = "0", Bool_t verbose = kTRUE, Bool_t createOnTheFly = kFALSE) const
            virtual RooAbsBinning& getBinning(const char* name = "0", Bool_t verbose = kTRUE, Bool_t createOnTheFly = kFALSE)
                    virtual Bool_t hasBinning(const char* name) const
                   virtual TClass* IsA() const
                    virtual Bool_t isJacobianOK(const RooArgSet& depList) const
                  virtual Double_t jacobian() const
                      virtual void printToStream(ostream& stream, RooPrintable::PrintOption opt = Standard, TString indent = ) const
                    virtual Bool_t readFromStream(istream& is, Bool_t compact, Bool_t verbose = kFALSE)
                      virtual void setVal(Double_t value)
                      virtual void ShowMembers(TMemberInspector& insp, char* parent)
                      virtual void Streamer(TBuffer& b)
                              void StreamerNVirtual(TBuffer& b)
                      virtual void writeToStream(ostream& os, Bool_t compact) const

Data Members


    protected:

      RooLinTransBinning _binning     
           RooLinkedList _altBinning  !
            RooRealProxy _var         
            RooRealProxy _slope       
            RooRealProxy _offset

Class Description

    RLV = (slope)*x + (offset)

 X is required to be a RooRealVar to meet the invertibility criterium
 (slope) and (offset) is are RooAbsReals, but may not overlap with x,
 i.e. x may not be a server of (slope) and (offset)

 In the context of a dataset, (slope) may not contain any real-valued dependents
 (satisfied constant Jacobian requirement). This check cannot be enforced at
 construction time, but can be performed any time using the isJacobianOK(depList)
 member function.

RooLinearVar(const char *name, const char *title, RooAbsRealLValue& variable, const RooAbsReal& slope, const RooAbsReal& offset, const char *unit) : RooAbsRealLValue(name, title, unit), _binning(variable.getBinning(),slope.getVal(),offset.getVal()), _var("var","variable",this,variable,kTRUE,kTRUE), _slope("slope","slope",this,(RooAbsReal&)slope), _offset("offset","offset",this,(RooAbsReal&)offset)

 Constructor with RooRealVar variable and RooAbsReal slope and offset

RooLinearVar(const RooLinearVar& other, const char* name) : RooAbsRealLValue(other,name), _binning(other._binning), _var("var",this,other._var), _slope("slope",this,other._slope), _offset("offset",this,other._offset)

 Copy constructor

~RooLinearVar()

 Destructor

Double_t evaluate() const

 Calculate current value of this object

void setVal(Double_t value)

 Assign given value to linear transformation: set input variable to (value-offset)/slope

Bool_t isJacobianOK(const RooArgSet& depList) const

 Check if Jacobian of input LValue is OK

Double_t jacobian() const

Bool_t readFromStream(istream& /*is*/, Bool_t /*compact*/, Bool_t /*verbose*/)

 Read object contents from stream

void writeToStream(ostream& os, Bool_t compact) const

 Write object contents to stream

void printToStream(ostream& os, PrintOption opt, TString indent) const

 Print info about this object to the specified stream.

RooAbsBinning& getBinning(const char* name, Bool_t verbose, Bool_t createOnTheFly)

 Normalization binning

const RooAbsBinning& getBinning(const char* name, Bool_t verbose, Bool_t createOnTheFly) const

Bool_t hasBinning(const char* name) const

Inline Functions

           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 update: Tue Jun 28 18:13:22 2005
Copyright (c) 2000-2005, Regents of the University of California *

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