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RooGenContext Class Reference

Class RooGenContext implement a universal generator context for all RooAbsPdf classes that do not have or need a specialized generator context.

This generator context queries the input p.d.f which observables it can generate internally and delegates generation of those observables to the p.d.f if it deems that safe. The other observables are generated use a RooAcceptReject sampling technique.

Definition at line 30 of file RooGenContext.h.

Public Member Functions

 RooGenContext (const RooAbsPdf &model, const RooArgSet &vars, const RooDataSet *prototype=0, const RooArgSet *auxProto=0, Bool_t verbose=kFALSE, const RooArgSet *forceDirect=0)
 Initialize a new context for generating events with the specified variables, using the specified PDF model. More...
 
virtual ~RooGenContext ()
 Destructor. More...
 
virtual void printMultiline (std::ostream &os, Int_t content, Bool_t verbose=kFALSE, TString indent="") const
 Printing interface. More...
 
virtual void attach (const RooArgSet &params)
 Attach the cloned model to the event buffer we will be filling. More...
 
- Public Member Functions inherited from RooAbsGenContext
 RooAbsGenContext (const RooAbsPdf &model, const RooArgSet &vars, const RooDataSet *prototype=0, const RooArgSet *auxProto=0, Bool_t _verbose=kFALSE)
 Constructor. More...
 
virtual ~RooAbsGenContext ()
 Destructor. More...
 
virtual RooDataSetgenerate (Double_t nEvents=0, Bool_t skipInit=kFALSE, Bool_t extendedMode=kFALSE)
 Generate the specified number of events with nEvents>0 and and return a dataset containing the generated events. More...
 
Bool_t isValid () const
 
void setVerbose (Bool_t verbose=kTRUE)
 
Bool_t isVerbose () const
 
virtual void setProtoDataOrder (Int_t *lut)
 Set the traversal order of prototype data to that in the lookup tables passed as argument. More...
 
virtual void Print (Option_t *options=0) const
 Print TNamed name and title. More...
 
virtual void printName (std::ostream &os) const
 Print name of context. More...
 
virtual void printTitle (std::ostream &os) const
 Print title of context. More...
 
virtual void printClassName (std::ostream &os) const
 Print class name of context. More...
 
virtual void printArgs (std::ostream &os) const
 Print arguments of context, i.e. the observables being generated in this context. More...
 
virtual Int_t defaultPrintContents (Option_t *opt) const
 Define default contents when printing. More...
 
virtual StyleOption defaultPrintStyle (Option_t *opt) const
 Define default print style. More...
 
virtual void setExpectedData (Bool_t)
 
- Public Member Functions inherited from TNamed
 TNamed ()
 
 TNamed (const char *name, const char *title)
 
 TNamed (const TString &name, const TString &title)
 
 TNamed (const TNamed &named)
 
TNamedoperator= (const TNamed &rhs)
 TNamed assignment operator. More...
 
virtual ~TNamed ()
 
virtual void Clear (Option_t *option="")
 Set name and title to empty strings (""). More...
 
virtual TObjectClone (const char *newname="") const
 Make a clone of an object using the Streamer facility. More...
 
virtual Int_t Compare (const TObject *obj) const
 Compare two TNamed objects. More...
 
virtual void Copy (TObject &named) const
 Copy this to obj. More...
 
virtual void FillBuffer (char *&buffer)
 Encode TNamed into output buffer. More...
 
virtual const char * GetName () const
 Returns name of object. More...
 
virtual const char * GetTitle () const
 Returns title of object. More...
 
virtual ULong_t Hash () const
 Return hash value for this object. More...
 
virtual Bool_t IsSortable () const
 
virtual void SetName (const char *name)
 Change (i.e. More...
 
virtual void SetNameTitle (const char *name, const char *title)
 Change (i.e. set) all the TNamed parameters (name and title). More...
 
virtual void SetTitle (const char *title="")
 Change (i.e. set) the title of the TNamed. More...
 
virtual void ls (Option_t *option="") const
 List TNamed name and title. More...
 
virtual Int_t Sizeof () const
 Return size of the TNamed part of the TObject. More...
 
- Public Member Functions inherited from TObject
 TObject ()
 
 TObject (const TObject &object)
 TObject copy ctor. More...
 
TObjectoperator= (const TObject &rhs)
 TObject assignment operator. More...
 
virtual ~TObject ()
 TObject destructor. More...
 
virtual void AppendPad (Option_t *option="")
 Append graphics object to current pad. More...
 
virtual void Browse (TBrowser *b)
 Browse object. May be overridden for another default action. More...
 
virtual const char * ClassName () const
 Returns name of class to which the object belongs. More...
 
virtual void Delete (Option_t *option="")
 Delete this object. More...
 
virtual Int_t DistancetoPrimitive (Int_t px, Int_t py)
 Computes distance from point (px,py) to the object. More...
 
virtual void Draw (Option_t *option="")
 Default Draw method for all objects. More...
 
virtual void DrawClass () const
 Draw class inheritance tree of the class to which this object belongs. More...
 
virtual TObjectDrawClone (Option_t *option="") const
 Draw a clone of this object in the current pad. More...
 
virtual void Dump () const
 Dump contents of object on stdout. More...
 
virtual void Execute (const char *method, const char *params, Int_t *error=0)
 Execute method on this object with the given parameter string, e.g. More...
 
virtual void Execute (TMethod *method, TObjArray *params, Int_t *error=0)
 Execute method on this object with parameters stored in the TObjArray. More...
 
virtual void ExecuteEvent (Int_t event, Int_t px, Int_t py)
 Execute action corresponding to an event at (px,py). More...
 
virtual TObjectFindObject (const char *name) const
 Must be redefined in derived classes. More...
 
virtual TObjectFindObject (const TObject *obj) const
 Must be redefined in derived classes. More...
 
virtual Option_tGetDrawOption () const
 Get option used by the graphics system to draw this object. More...
 
virtual UInt_t GetUniqueID () const
 Return the unique object id. More...
 
virtual const char * GetIconName () const
 Returns mime type name of object. More...
 
virtual Option_tGetOption () const
 
virtual char * GetObjectInfo (Int_t px, Int_t py) const
 Returns string containing info about the object at position (px,py). More...
 
virtual Bool_t HandleTimer (TTimer *timer)
 Execute action in response of a timer timing out. More...
 
virtual Bool_t InheritsFrom (const char *classname) const
 Returns kTRUE if object inherits from class "classname". More...
 
virtual Bool_t InheritsFrom (const TClass *cl) const
 Returns kTRUE if object inherits from TClass cl. More...
 
virtual void Inspect () const
 Dump contents of this object in a graphics canvas. More...
 
virtual Bool_t IsFolder () const
 Returns kTRUE in case object contains browsable objects (like containers or lists of other objects). More...
 
virtual Bool_t IsEqual (const TObject *obj) const
 Default equal comparison (objects are equal if they have the same address in memory). More...
 
Bool_t IsOnHeap () const
 
Bool_t IsZombie () const
 
virtual Bool_t Notify ()
 This method must be overridden to handle object notification. More...
 
virtual void Paint (Option_t *option="")
 This method must be overridden if a class wants to paint itself. More...
 
virtual void Pop ()
 Pop on object drawn in a pad to the top of the display list. More...
 
virtual Int_t Read (const char *name)
 Read contents of object with specified name from the current directory. More...
 
virtual void RecursiveRemove (TObject *obj)
 Recursively remove this object from a list. More...
 
virtual void SaveAs (const char *filename="", Option_t *option="") const
 Save this object in the file specified by filename. More...
 
virtual void SavePrimitive (std::ostream &out, Option_t *option="")
 Save a primitive as a C++ statement(s) on output stream "out". More...
 
virtual void SetDrawOption (Option_t *option="")
 Set drawing option for object. More...
 
virtual void SetUniqueID (UInt_t uid)
 Set the unique object id. More...
 
virtual void UseCurrentStyle ()
 Set current style settings in this object This function is called when either TCanvas::UseCurrentStyle or TROOT::ForceStyle have been invoked. More...
 
virtual Int_t Write (const char *name=0, Int_t option=0, Int_t bufsize=0)
 Write this object to the current directory. More...
 
virtual Int_t Write (const char *name=0, Int_t option=0, Int_t bufsize=0) const
 Write this object to the current directory. More...
 
voidoperator new (size_t sz)
 
voidoperator new[] (size_t sz)
 
voidoperator new (size_t sz, void *vp)
 
voidoperator new[] (size_t sz, void *vp)
 
void operator delete (void *ptr)
 Operator delete. More...
 
void operator delete[] (void *ptr)
 Operator delete []. More...
 
void SetBit (UInt_t f, Bool_t set)
 Set or unset the user status bits as specified in f. More...
 
void SetBit (UInt_t f)
 
void ResetBit (UInt_t f)
 
Bool_t TestBit (UInt_t f) const
 
Int_t TestBits (UInt_t f) const
 
void InvertBit (UInt_t f)
 
virtual void Info (const char *method, const char *msgfmt,...) const
 Issue info message. More...
 
virtual void Warning (const char *method, const char *msgfmt,...) const
 Issue warning message. More...
 
virtual void Error (const char *method, const char *msgfmt,...) const
 Issue error message. More...
 
virtual void SysError (const char *method, const char *msgfmt,...) const
 Issue system error message. More...
 
virtual void Fatal (const char *method, const char *msgfmt,...) const
 Issue fatal error message. More...
 
void AbstractMethod (const char *method) const
 Use this method to implement an "abstract" method that you don't want to leave purely abstract. More...
 
void MayNotUse (const char *method) const
 Use this method to signal that a method (defined in a base class) may not be called in a derived class (in principle against good design since a child class should not provide less functionality than its parent, however, sometimes it is necessary). More...
 
void Obsolete (const char *method, const char *asOfVers, const char *removedFromVers) const
 Use this method to declare a method obsolete. More...
 
- Public Member Functions inherited from RooPrintable
 RooPrintable ()
 
virtual ~RooPrintable ()
 
virtual void printStream (std::ostream &os, Int_t contents, StyleOption style, TString indent="") const
 Print description of object on ostream, printing contents set by contents integer, which is interpreted as an OR of 'enum ContentsOptions' values and in the style given by 'enum StyleOption'. More...
 
virtual void printAddress (std::ostream &os) const
 Print class name of object. More...
 
virtual void printValue (std::ostream &os) const
 Interface to print value of object. More...
 
virtual void printExtras (std::ostream &os) const
 Interface to print extras of object. More...
 
virtual void printTree (std::ostream &os, TString indent="") const
 Interface for tree structure printing of object. More...
 

Protected Member Functions

virtual void initGenerator (const RooArgSet &theEvent)
 Perform one-time initialization of the generator context. More...
 
virtual void generateEvent (RooArgSet &theEvent, Int_t remaining)
 Generate one event. More...
 
- Protected Member Functions inherited from RooAbsGenContext
virtual RooDataSetcreateDataSet (const char *name, const char *title, const RooArgSet &obs)
 Create an empty dataset to hold the events that will be generated. More...
 
void resampleData (Double_t &ratio)
 Rescale existing output buffer with given ratio. More...
 
- Protected Member Functions inherited from TObject
void MakeZombie ()
 
virtual void DoError (int level, const char *location, const char *fmt, va_list va) const
 Interface to ErrorHandler (protected). More...
 

Protected Attributes

RooArgSet_cloneSet
 
RooAbsPdf_pdfClone
 
RooArgSet _directVars
 
RooArgSet _uniformVars
 
RooArgSet _otherVars
 
Int_t _code
 
Double_t _maxProb
 
Double_t _area
 
Double_t _norm
 
RooRealIntegral_acceptRejectFunc
 
RooAbsNumGenerator_generator
 
RooRealVar_maxVar
 
TIterator_uniIter
 
Int_t _updateFMaxPerEvent
 
- Protected Attributes inherited from RooAbsGenContext
const RooDataSet_prototype
 
RooArgSet_theEvent
 
Bool_t _isValid
 
Bool_t _verbose
 
UInt_t _expectedEvents
 
RooArgSet _protoVars
 
Int_t _nextProtoIndex
 
RooAbsPdf::ExtendMode _extendMode
 
Int_t_protoOrder
 
TString _normRange
 
RooDataSet_genData
 
- Protected Attributes inherited from TNamed
TString fName
 
TString fTitle
 

Additional Inherited Members

- Public Types inherited from TObject
enum  EStatusBits {
  kCanDelete = BIT(0), kMustCleanup = BIT(3), kObjInCanvas = BIT(3), kIsReferenced = BIT(4),
  kHasUUID = BIT(5), kCannotPick = BIT(6), kNoContextMenu = BIT(8), kInvalidObject = BIT(13)
}
 
enum  { kIsOnHeap = 0x01000000, kNotDeleted = 0x02000000, kZombie = 0x04000000, kBitMask = 0x00ffffff }
 
enum  { kSingleKey = BIT(0), kOverwrite = BIT(1), kWriteDelete = BIT(2) }
 
- Public Types inherited from RooPrintable
enum  ContentsOption {
  kName =1, kClassName =2, kValue =4, kArgs =8,
  kExtras =16, kAddress =32, kTitle =64, kCollectionHeader =128
}
 
enum  StyleOption {
  kInline =1, kSingleLine =2, kStandard =3, kVerbose =4,
  kTreeStructure =5
}
 
- Static Public Member Functions inherited from TObject
static Long_t GetDtorOnly ()
 Return destructor only flag. More...
 
static void SetDtorOnly (void *obj)
 Set destructor only flag. More...
 
static Bool_t GetObjectStat ()
 Get status of object stat flag. More...
 
static void SetObjectStat (Bool_t stat)
 Turn on/off tracking of objects in the TObjectTable. More...
 
- Static Public Member Functions inherited from RooPrintable
static std::ostream & defaultPrintStream (std::ostream *os=0)
 Return a reference to the current default stream to use in Print(). More...
 
static void nameFieldLength (Int_t newLen)
 Set length of field reserved from printing name of RooAbsArgs in multi-line collection printing to given amount. More...
 
- Static Protected Attributes inherited from RooPrintable
static Int_t _nameLength
 

#include <RooGenContext.h>

Inheritance diagram for RooGenContext:
[legend]

Constructor & Destructor Documentation

RooGenContext::RooGenContext ( const RooAbsPdf model,
const RooArgSet vars,
const RooDataSet prototype = 0,
const RooArgSet auxProto = 0,
Bool_t  verbose = kFALSE,
const RooArgSet forceDirect = 0 
)

Initialize a new context for generating events with the specified variables, using the specified PDF model.

A prototype dataset (if provided) is not cloned and still belongs to the caller. The contents and shape of this dataset can be changed between calls to generate() as long as the expected columns to be copied to the generated dataset are present. Any argument supplied in the forceDirect RooArgSet are always offered for internal generation to the p.d.f., even if this is deemed unsafe by the logic of RooGenContext.

Definition at line 70 of file RooGenContext.cxx.

RooGenContext::~RooGenContext ( )
virtual

Destructor.

Definition at line 317 of file RooGenContext.cxx.

Member Function Documentation

void RooGenContext::attach ( const RooArgSet params)
virtual

Attach the cloned model to the event buffer we will be filling.

Reimplemented from RooAbsGenContext.

Definition at line 334 of file RooGenContext.cxx.

Referenced by initGenerator().

void RooGenContext::generateEvent ( RooArgSet theEvent,
Int_t  remaining 
)
protectedvirtual

Generate one event.

The 'remaining' integer is not used other than for printing messages

Implements RooAbsGenContext.

Definition at line 383 of file RooGenContext.cxx.

void RooGenContext::initGenerator ( const RooArgSet theEvent)
protectedvirtual

Perform one-time initialization of the generator context.

Reimplemented from RooAbsGenContext.

Definition at line 353 of file RooGenContext.cxx.

void RooGenContext::printMultiline ( std::ostream &  os,
Int_t  content,
Bool_t  verbose = kFALSE,
TString  indent = "" 
) const
virtual

Printing interface.

Reimplemented from RooAbsGenContext.

Definition at line 439 of file RooGenContext.cxx.

Member Data Documentation

RooRealIntegral* RooGenContext::_acceptRejectFunc
protected

Definition at line 50 of file RooGenContext.h.

Referenced by attach(), RooGenContext(), and ~RooGenContext().

Double_t RooGenContext::_area
protected

Definition at line 49 of file RooGenContext.h.

RooArgSet* RooGenContext::_cloneSet
protected

Definition at line 45 of file RooGenContext.h.

Referenced by RooGenContext(), and ~RooGenContext().

Int_t RooGenContext::_code
protected

Definition at line 48 of file RooGenContext.h.

Referenced by generateEvent(), initGenerator(), and RooGenContext().

RooArgSet RooGenContext::_directVars
protected

Definition at line 47 of file RooGenContext.h.

Referenced by generateEvent(), initGenerator(), printMultiline(), and RooGenContext().

RooAbsNumGenerator* RooGenContext::_generator
protected

Definition at line 51 of file RooGenContext.h.

Referenced by attach(), generateEvent(), printMultiline(), RooGenContext(), and ~RooGenContext().

Double_t RooGenContext::_maxProb
protected

Definition at line 49 of file RooGenContext.h.

RooRealVar* RooGenContext::_maxVar
protected

Definition at line 52 of file RooGenContext.h.

Referenced by generateEvent(), RooGenContext(), and ~RooGenContext().

Double_t RooGenContext::_norm
protected

Definition at line 49 of file RooGenContext.h.

RooArgSet RooGenContext::_otherVars
protected

Definition at line 47 of file RooGenContext.h.

Referenced by generateEvent(), printMultiline(), and RooGenContext().

RooAbsPdf* RooGenContext::_pdfClone
protected

Definition at line 46 of file RooGenContext.h.

Referenced by attach(), generateEvent(), initGenerator(), printMultiline(), and RooGenContext().

RooArgSet RooGenContext::_uniformVars
protected

Definition at line 47 of file RooGenContext.h.

Referenced by generateEvent(), initGenerator(), and RooGenContext().

TIterator* RooGenContext::_uniIter
protected

Definition at line 53 of file RooGenContext.h.

Referenced by generateEvent(), initGenerator(), and ~RooGenContext().

Int_t RooGenContext::_updateFMaxPerEvent
protected

Definition at line 54 of file RooGenContext.h.

Referenced by generateEvent(), and RooGenContext().

Collaboration diagram for RooGenContext:
[legend]

The documentation for this class was generated from the following files: