RooAddPdf Class Reference

RooAddPdf is an efficient implementation of a sum of PDFs of the form.

\[ \sum_{i=1}^{n} c_i \cdot \mathrm{PDF}_i \]

or

\[ c_1\cdot\mathrm{PDF}_1 + c_2\cdot\mathrm{PDF}_2 \; + \; ... \; + \; \left( 1-\sum_{i=1}^{n-1}c_i \right) \cdot \mathrm{PDF}_n \]

The first form is for extended likelihood fits, where the expected number of events is \( \sum_i c_i \). The coefficients \( c_i \) can either be explicitly provided, or, if all components support extended likelihood fits, they can be calculated from the contribution of each PDF to the total expected number of events.

In the second form, the sum of the coefficients is required to be 1 or less, and the coefficient of the last PDF is calculated automatically from the condition that the sum of all coefficients has to be 1.

Recursive coefficients

It is also possible to parameterise the coefficients recursively

\[ \sum_{i=1}^n c_i \prod_{j=1}^{i-1} \left[ (1-c_j) \right] \cdot \mathrm{PDF}_i \\ = c_1 \cdot \mathrm{PDF}_1 + (1-c_1)\, c_2 \cdot \mathrm{PDF}_2 + \ldots + (1-c_1)\ldots(1-c_{n-1}) \cdot 1 \cdot \mathrm{PDF}_n \\ \]

In this form the sum of the coefficients is always less than 1.0 for all possible values of the individual coefficients between 0 and 1.

Note

Don't pass the \( n^\mathrm{th} \) coefficient. It is always 1, since the normalisation condition removes one degree of freedom.

RooAddPdf relies on each component PDF to be normalized and will perform no normalization other than calculating the proper last coefficient \( c_n \), if requested. An (enforced) condition for this assumption is that each \( \mathrm{PDF}_i \) is independent of each \( c_i \).

Difference between RooAddPdf / RooRealSumFunc / RooRealSumPdf

• RooAddPdf is a PDF of PDFs, i.e. its components need to be normalised and non-negative.
• RooRealSumPdf is a PDF of functions, i.e., its components can be negative, but their sum cannot be. The normalisation is computed automatically, unless the PDF is extended (see above).
• RooRealSumFunc is a sum of functions. It is neither normalised, nor need it be positive.

Definition at line 34 of file RooAddPdf.h.

Public Member Functions
	RooAddPdf ()
	RooAddPdf (const char *name, const char *title, const RooArgList &pdfList)
	Generic constructor from list of extended PDFs.
	RooAddPdf (const char *name, const char *title, const RooArgList &pdfList, const RooArgList &coefList, bool recursiveFraction=false)
	Generic constructor from list of PDFs and list of coefficients.
	RooAddPdf (const char *name, const char *title, RooAbsPdf &pdf1, RooAbsPdf &pdf2, RooAbsReal &coef1)
	Constructor with two PDFs and one coefficient.
	RooAddPdf (const char *name, const char *title=nullptr)
	Dummy constructor.
	RooAddPdf (const RooAddPdf &other, const char *name=nullptr)
	Copy constructor.
	~RooAddPdf () override
double	analyticalIntegralWN (Int_t code, const RooArgSet *normSet, const char *rangeName=nullptr) const override
	Return analytical integral defined by given scenario code.
std::list< double > *	binBoundaries (RooAbsRealLValue &, double, double) const override
	Loop over components for plot sampling hints and merge them if there are multiple.
CacheMode	canNodeBeCached () const override
bool	checkObservables (const RooArgSet *nset) const override
	Check if PDF is valid for given normalization set.
TObject *	clone (const char *newname) const override
const RooArgList &	coefList () const
std::unique_ptr< RooAbsArg >	compileForNormSet (RooArgSet const &normSet, RooFit::Detail::CompileContext &ctx) const override
std::unique_ptr< RooAbsReal >	createExpectedEventsFunc (const RooArgSet *nset) const override
	Returns an object that represents the expected number of events for a given normalization set, similar to how createIntegral() returns an object that returns the integral.
double	expectedEvents (const RooArgSet *nset) const override
	Return expected number of events for extended likelihood calculation, which is the sum of all coefficients.
ExtendMode	extendMode () const override
	Returns ability of PDF to provide extended likelihood terms.
void	fixCoefNormalization (const RooArgSet &refCoefNorm)
	By default the interpretation of the fraction coefficients is performed in the contextual choice of observables.
void	fixCoefRange (const char *rangeName)
	By default, fraction coefficients are assumed to refer to the default fit range.
bool	forceAnalyticalInt (const RooAbsArg &) const override
	Force RooRealIntegral to offer all observables for internal integration.
Int_t	getAnalyticalIntegralWN (RooArgSet &allVars, RooArgSet &numVars, const RooArgSet *normSet, const char *rangeName=nullptr) const override
	Determine which part (if any) of given integral can be performed analytically.
const RooArgSet &	getCoefNormalization () const
const char *	getCoefRange () const
TClass *	IsA () const override
bool	isBinnedDistribution (const RooArgSet &obs) const override
	If all components that depend on obs are binned, so is their sum.
const RooArgList &	pdfList () const
std::list< double > *	plotSamplingHint (RooAbsRealLValue &obs, double xlo, double xhi) const override
	Loop over components for plot sampling hints and merge them if there are multiple.
void	printMetaArgs (std::ostream &os) const override
	Customized printing of arguments of a RooAddPdf to more intuitively reflect the contents of the product operator construction.
void	resetErrorCounters (Int_t resetValue=10) override
	Reset error counter to given value, limiting the number of future error messages for this pdf to 'resetValue'.
bool	selfNormalized () const override
	Shows if a PDF is self-normalized, which means that no attempt is made to add a normalization term.
void	setCacheAndTrackHints (RooArgSet &) override
	Label OK'ed components of a RooAddPdf with cache-and-track.
void	Streamer (TBuffer &) override
	Stream an object of class TObject.
void	StreamerNVirtual (TBuffer &ClassDef_StreamerNVirtual_b)
Public Member Functions inherited from RooAbsPdf
	RooAbsPdf ()
	Default constructor.
	RooAbsPdf (const char *name, const char *title, double minVal, double maxVal)
	Constructor with name, title, and plot range.
	RooAbsPdf (const char *name, const char *title=nullptr)
	Constructor with name and title only.
	~RooAbsPdf () override
	Destructor.
virtual RooAbsGenContext *	autoGenContext (const RooArgSet &vars, const RooDataSet *prototype=nullptr, const RooArgSet *auxProto=nullptr, bool verbose=false, bool autoBinned=true, const char *binnedTag="") const
virtual RooAbsGenContext *	binnedGenContext (const RooArgSet &vars, bool verbose=false) const
	Return a binned generator context.
bool	canBeExtended () const
	If true, PDF can provide extended likelihood term.
virtual RooFit::OwningPtr< RooFitResult >	chi2FitTo (RooDataHist &data, const RooCmdArg &arg1=RooCmdArg::none(), const RooCmdArg &arg2=RooCmdArg::none(), const RooCmdArg &arg3=RooCmdArg::none(), const RooCmdArg &arg4=RooCmdArg::none(), const RooCmdArg &arg5=RooCmdArg::none(), const RooCmdArg &arg6=RooCmdArg::none(), const RooCmdArg &arg7=RooCmdArg::none(), const RooCmdArg &arg8=RooCmdArg::none())
	Perform a \( \chi^2 \) fit to given histogram.
virtual RooFit::OwningPtr< RooFitResult >	chi2FitTo (RooDataHist &data, const RooLinkedList &cmdList)
	Perform a \( \chi^2 \) fit to given histogram.
RooFit::OwningPtr< RooFitResult >	chi2FitTo (RooDataHist &data, const RooLinkedList &cmdList) override
	Calls RooAbsPdf::createChi2(RooDataSet& data, const RooLinkedList& cmdList) and returns fit result.
virtual RooFit::OwningPtr< RooFitResult >	chi2FitTo (RooDataSet &xydata, const RooCmdArg &arg1=RooCmdArg::none(), const RooCmdArg &arg2=RooCmdArg::none(), const RooCmdArg &arg3=RooCmdArg::none(), const RooCmdArg &arg4=RooCmdArg::none(), const RooCmdArg &arg5=RooCmdArg::none(), const RooCmdArg &arg6=RooCmdArg::none(), const RooCmdArg &arg7=RooCmdArg::none(), const RooCmdArg &arg8=RooCmdArg::none())
	Perform a 2-D \( \chi^2 \) fit using a series of x and y values stored in the dataset xydata.
virtual RooFit::OwningPtr< RooFitResult >	chi2FitTo (RooDataSet &xydata, const RooLinkedList &cmdList)
	Perform a 2-D \( \chi^2 \) fit using a series of x and y values stored in the dataset xydata.
RooFit::OwningPtr< RooAbsReal >	createCdf (const RooArgSet &iset, const RooArgSet &nset=RooArgSet())
	Create a cumulative distribution function of this p.d.f in terms of the observables listed in iset.
RooFit::OwningPtr< RooAbsReal >	createCdf (const RooArgSet &iset, const RooCmdArg &arg1, const RooCmdArg &arg2=RooCmdArg::none(), const RooCmdArg &arg3=RooCmdArg::none(), const RooCmdArg &arg4=RooCmdArg::none(), const RooCmdArg &arg5=RooCmdArg::none(), const RooCmdArg &arg6=RooCmdArg::none(), const RooCmdArg &arg7=RooCmdArg::none(), const RooCmdArg &arg8=RooCmdArg::none())
	Create an object that represents the integral of the function over one or more observables listed in iset.
virtual RooAbsReal *	createChi2 (RooDataHist &data, const RooCmdArg &arg1=RooCmdArg::none(), const RooCmdArg &arg2=RooCmdArg::none(), const RooCmdArg &arg3=RooCmdArg::none(), const RooCmdArg &arg4=RooCmdArg::none(), const RooCmdArg &arg5=RooCmdArg::none(), const RooCmdArg &arg6=RooCmdArg::none(), const RooCmdArg &arg7=RooCmdArg::none(), const RooCmdArg &arg8=RooCmdArg::none())
	Create a \( \chi^2 \) variable from a histogram and this function.
RooAbsReal *	createChi2 (RooDataHist &data, const RooCmdArg &arg1=RooCmdArg::none(), const RooCmdArg &arg2=RooCmdArg::none(), const RooCmdArg &arg3=RooCmdArg::none(), const RooCmdArg &arg4=RooCmdArg::none(), const RooCmdArg &arg5=RooCmdArg::none(), const RooCmdArg &arg6=RooCmdArg::none(), const RooCmdArg &arg7=RooCmdArg::none(), const RooCmdArg &arg8=RooCmdArg::none()) override
	Create a \( \chi^2 \) from a histogram and this function.
virtual RooAbsReal *	createChi2 (RooDataHist &data, const RooLinkedList &cmdList)
virtual RooAbsReal *	createChi2 (RooDataSet &data, const RooCmdArg &arg1=RooCmdArg::none(), const RooCmdArg &arg2=RooCmdArg::none(), const RooCmdArg &arg3=RooCmdArg::none(), const RooCmdArg &arg4=RooCmdArg::none(), const RooCmdArg &arg5=RooCmdArg::none(), const RooCmdArg &arg6=RooCmdArg::none(), const RooCmdArg &arg7=RooCmdArg::none(), const RooCmdArg &arg8=RooCmdArg::none())
	Create a \( \chi^2 \) from a series of x and y values stored in a dataset.
virtual RooAbsReal *	createChi2 (RooDataSet &data, const RooLinkedList &cmdList)
	See RooAbsReal::createChi2(RooDataSet&,const RooCmdArg&,const RooCmdArg&,const RooCmdArg&,const RooCmdArg&,const RooCmdArg&,const RooCmdArg&,const RooCmdArg&,const RooCmdArg&)
RooAbsReal *	createChi2 (RooDataSet &data, const RooLinkedList &cmdList) override
	Argument-list version of RooAbsPdf::createChi2()
virtual RooFit::OwningPtr< RooAbsReal >	createNLL (RooAbsData &data, const RooLinkedList &cmdList={})
	Construct representation of -log(L) of PDF with given dataset.
template<typename... Args>
RooFit::OwningPtr< RooAbsReal >	createNLL (RooAbsData &data, RooCmdArg const &arg1, Args const &... args)
	Takes an arbitrary number of RooCmdArg command options and calls RooAbsPdf::createNLL(RooAbsData& data, const RooLinkedList& cmdList).
virtual RooAbsPdf *	createProjection (const RooArgSet &iset)
	Return a p.d.f that represent a projection of this p.d.f integrated over given observables.
RooFit::OwningPtr< RooAbsReal >	createScanCdf (const RooArgSet &iset, const RooArgSet &nset, Int_t numScanBins, Int_t intOrder)
double	expectedEvents (const RooArgSet &nset) const
	Return expected number of events to be used in calculation of extended likelihood.
double	extendedTerm (double sumEntries, double expected, double sumEntriesW2=0.0, bool doOffset=false) const
double	extendedTerm (double sumEntries, RooArgSet const *nset, double sumEntriesW2=0.0, bool doOffset=false) const
	Return the extended likelihood term ( \( N_\mathrm{expect} - N_\mathrm{observed} \cdot \log(N_\mathrm{expect} \)) of this PDF for the given number of observed events.
double	extendedTerm (RooAbsData const &data, bool weightSquared, bool doOffset=false) const
	Return the extended likelihood term ( \( N_\mathrm{expect} - N_\mathrm{observed} \cdot \log(N_\mathrm{expect} \)) of this PDF for the given number of observed events.
virtual RooFit::OwningPtr< RooFitResult >	fitTo (RooAbsData &data, const RooLinkedList &cmdList={})
	Fit PDF to given dataset.
template<typename... Args>
RooFit::OwningPtr< RooFitResult >	fitTo (RooAbsData &data, RooCmdArg const &arg1, Args const &... args)
	Takes an arbitrary number of RooCmdArg command options and calls RooAbsPdf::fitTo(RooAbsData& data, const RooLinkedList& cmdList).
RooFit::OwningPtr< RooDataSet >	generate (const RooArgSet &whatVars, const RooCmdArg &arg1=RooCmdArg::none(), const RooCmdArg &arg2=RooCmdArg::none(), const RooCmdArg &arg3=RooCmdArg::none(), const RooCmdArg &arg4=RooCmdArg::none(), const RooCmdArg &arg5=RooCmdArg::none(), const RooCmdArg &arg6=RooCmdArg::none())
	Generate a new dataset containing the specified variables with events sampled from our distribution.
RooFit::OwningPtr< RooDataSet >	generate (const RooArgSet &whatVars, const RooDataSet &prototype, Int_t nEvents=0, bool verbose=false, bool randProtoOrder=false, bool resampleProto=false) const
	Generate a new dataset using a prototype dataset as a model, with values of the variables in whatVars sampled from our distribution.
RooFit::OwningPtr< RooDataSet >	generate (const RooArgSet &whatVars, double nEvents=0, bool verbose=false, bool autoBinned=true, const char *binnedTag="", bool expectedData=false, bool extended=false) const
	Generate a new dataset containing the specified variables with events sampled from our distribution.
RooFit::OwningPtr< RooDataSet >	generate (const RooArgSet &whatVars, Int_t nEvents, const RooCmdArg &arg1, const RooCmdArg &arg2=RooCmdArg::none(), const RooCmdArg &arg3=RooCmdArg::none(), const RooCmdArg &arg4=RooCmdArg::none(), const RooCmdArg &arg5=RooCmdArg::none())
	See RooAbsPdf::generate(const RooArgSet&,const RooCmdArg&,const RooCmdArg&,const RooCmdArg&,const RooCmdArg&,const RooCmdArg&,const RooCmdArg&)
RooFit::OwningPtr< RooDataSet >	generate (GenSpec &) const
	Generate according to GenSpec obtained from prepareMultiGen().
virtual RooFit::OwningPtr< RooDataHist >	generateBinned (const RooArgSet &whatVars, const RooCmdArg &arg1=RooCmdArg::none(), const RooCmdArg &arg2=RooCmdArg::none(), const RooCmdArg &arg3=RooCmdArg::none(), const RooCmdArg &arg4=RooCmdArg::none(), const RooCmdArg &arg5=RooCmdArg::none(), const RooCmdArg &arg6=RooCmdArg::none()) const
	Generate a new dataset containing the specified variables with events sampled from our distribution.
virtual RooFit::OwningPtr< RooDataHist >	generateBinned (const RooArgSet &whatVars, double nEvents, bool expectedData=false, bool extended=false) const
	Generate a new dataset containing the specified variables with events sampled from our distribution.
virtual RooFit::OwningPtr< RooDataHist >	generateBinned (const RooArgSet &whatVars, double nEvents, const RooCmdArg &arg1, const RooCmdArg &arg2=RooCmdArg::none(), const RooCmdArg &arg3=RooCmdArg::none(), const RooCmdArg &arg4=RooCmdArg::none(), const RooCmdArg &arg5=RooCmdArg::none()) const
	As RooAbsPdf::generateBinned(const RooArgSet&, const RooCmdArg&,const RooCmdArg&, const RooCmdArg&,const RooCmdArg&, const RooCmdArg&,const RooCmdArg&) const.
virtual void	generateEvent (Int_t code)
	Interface for generation of an event using the algorithm corresponding to the specified code.
virtual RooFit::OwningPtr< RooDataSet >	generateSimGlobal (const RooArgSet &whatVars, Int_t nEvents)
	Special generator interface for generation of 'global observables' – for RooStats tools.
RooArgSet *	getAllConstraints (const RooArgSet &observables, RooArgSet &constrainedParams, bool stripDisconnected=true, bool removeConstraintsFromPdf=false) const
	This helper function finds and collects all constraints terms of all component p.d.f.s and returns a RooArgSet with all those terms.
virtual RooArgSet *	getConstraints (const RooArgSet &, RooArgSet &, bool, bool=false) const
virtual Int_t	getGenerator (const RooArgSet &directVars, RooArgSet &generateVars, bool staticInitOK=true) const
	Load generatedVars with the subset of directVars that we can generate events for, and return a code that specifies the generator algorithm we will use.
const RooNumGenConfig *	getGeneratorConfig () const
	Return the numeric MC generator configuration used for this object.
RooSpan< const double >	getLogProbabilities (RooBatchCompute::RunContext &evalData, const RooArgSet *normSet=nullptr) const
	Compute the log-likelihoods for all events in the requested batch.
void	getLogProbabilities (RooSpan< const double > pdfValues, double *output) const
virtual double	getLogVal (const RooArgSet *set=nullptr) const
	Return the log of the current value with given normalization An error message is printed if the argument of the log is negative.
RooSpan< const double >	getLogValBatch (std::size_t begin, std::size_t batchSize, const RooArgSet *normSet=nullptr) const
double	getNorm (const RooArgSet &nset) const
	Get normalisation term needed to normalise the raw values returned by getVal().
virtual double	getNorm (const RooArgSet *set=nullptr) const
	Get normalisation term needed to normalise the raw values returned by getVal().
const RooAbsReal *	getNormIntegral (const RooArgSet &nset) const
virtual const RooAbsReal *	getNormObj (const RooArgSet *set, const RooArgSet *iset, const TNamed *rangeName=nullptr) const
	Return pointer to RooAbsReal object that implements calculation of integral over observables iset in range rangeName, optionally taking the integrand normalized over observables nset.
virtual void	initGenerator (Int_t code)
	Interface for one-time initialization to setup the generator for the specified code.
virtual bool	isDirectGenSafe (const RooAbsArg &arg) const
	Check if given observable can be safely generated using the pdfs internal generator mechanism (if that existsP).
std::unique_ptr< RooFitResult >	minimizeNLL (RooAbsReal &nll, RooAbsData const &data, MinimizerConfig const &cfg)
	Minimizes a given NLL variable by finding the optimal parameters with the RooMinimzer.
bool	mustBeExtended () const
	If true PDF must provide extended likelihood term.
const char *	normRange () const
virtual RooPlot *	paramOn (RooPlot *frame, const RooAbsData *data, const char *label="", Int_t sigDigits=2, Option_t *options="NELU", double xmin=0.65, double xmax=0.9, double ymax=0.9)
virtual RooPlot *	paramOn (RooPlot *frame, const RooCmdArg &arg1=RooCmdArg::none(), const RooCmdArg &arg2=RooCmdArg::none(), const RooCmdArg &arg3=RooCmdArg::none(), const RooCmdArg &arg4=RooCmdArg::none(), const RooCmdArg &arg5=RooCmdArg::none(), const RooCmdArg &arg6=RooCmdArg::none(), const RooCmdArg &arg7=RooCmdArg::none(), const RooCmdArg &arg8=RooCmdArg::none())
	Add a box with parameter values (and errors) to the specified frame.
RooPlot *	plotOn (RooPlot *frame, const RooCmdArg &arg1=RooCmdArg::none(), const RooCmdArg &arg2=RooCmdArg::none(), const RooCmdArg &arg3=RooCmdArg::none(), const RooCmdArg &arg4=RooCmdArg::none(), const RooCmdArg &arg5=RooCmdArg::none(), const RooCmdArg &arg6=RooCmdArg::none(), const RooCmdArg &arg7=RooCmdArg::none(), const RooCmdArg &arg8=RooCmdArg::none(), const RooCmdArg &arg9=RooCmdArg::none(), const RooCmdArg &arg10=RooCmdArg::none()) const override
	Helper calling plotOn(RooPlot*, RooLinkedList&) const.
RooPlot *	plotOn (RooPlot *frame, RooLinkedList &cmdList) const override
	Plot (project) PDF on specified frame.
GenSpec *	prepareMultiGen (const RooArgSet &whatVars, const RooCmdArg &arg1=RooCmdArg::none(), const RooCmdArg &arg2=RooCmdArg::none(), const RooCmdArg &arg3=RooCmdArg::none(), const RooCmdArg &arg4=RooCmdArg::none(), const RooCmdArg &arg5=RooCmdArg::none(), const RooCmdArg &arg6=RooCmdArg::none())
	Prepare GenSpec configuration object for efficient generation of multiple datasets from identical specification.
void	printMultiline (std::ostream &os, Int_t contents, bool verbose=false, TString indent="") const override
	Print multi line detailed information of this RooAbsPdf.
void	printValue (std::ostream &os) const override
	Print value of p.d.f, also print normalization integral that was last used, if any.
void	setGeneratorConfig ()
	Remove the specialized numeric MC generator configuration associated with this object.
void	setGeneratorConfig (const RooNumGenConfig &config)
	Set the given configuration as default numeric MC generator configuration for this object.
void	setNormRange (const char *rangeName)
void	setNormRangeOverride (const char *rangeName)
void	setTraceCounter (Int_t value, bool allNodes=false)
	Reset trace counter to given value, limiting the number of future trace messages for this pdf to 'value'.
RooNumGenConfig *	specialGeneratorConfig () const
	Returns the specialized integrator configuration for this RooAbsReal.
RooNumGenConfig *	specialGeneratorConfig (bool createOnTheFly)
	Returns the specialized integrator configuration for this RooAbsReal.
void	StreamerNVirtual (TBuffer &ClassDef_StreamerNVirtual_b)
Public Member Functions inherited from RooAbsReal
	RooAbsReal ()
	coverity[UNINIT_CTOR] Default constructor
	RooAbsReal (const char *name, const char *title, const char *unit="")
	Constructor with unit label.
	RooAbsReal (const char *name, const char *title, double minVal, double maxVal, const char *unit="")
	Constructor with plot range and unit label.
	RooAbsReal (const RooAbsReal &other, const char *name=nullptr)
	Copy constructor.
	~RooAbsReal () override
	Destructor.
virtual double	analyticalIntegral (Int_t code, const char *rangeName=nullptr) const
	Implements the actual analytical integral(s) advertised by getAnalyticalIntegral.
TF1 *	asTF (const RooArgList &obs, const RooArgList &pars=RooArgList(), const RooArgSet &nset=RooArgSet()) const
	Return a ROOT TF1,2,3 object bound to this RooAbsReal with given definition of observables and parameters.
RooAbsFunc *	bindVars (const RooArgSet &vars, const RooArgSet *nset=nullptr, bool clipInvalid=false) const
	Create an interface adaptor f(vars) that binds us to the specified variables (in arbitrary order).
RooAbsArg *	createFundamental (const char *newname=nullptr) const override
	Create a RooRealVar fundamental object with our properties.
TH1 *	createHistogram (const char *name, const RooAbsRealLValue &xvar, const RooCmdArg &arg1=RooCmdArg::none(), const RooCmdArg &arg2=RooCmdArg::none(), const RooCmdArg &arg3=RooCmdArg::none(), const RooCmdArg &arg4=RooCmdArg::none(), const RooCmdArg &arg5=RooCmdArg::none(), const RooCmdArg &arg6=RooCmdArg::none(), const RooCmdArg &arg7=RooCmdArg::none(), const RooCmdArg &arg8=RooCmdArg::none()) const
	Create and fill a ROOT histogram TH1, TH2 or TH3 with the values of this function.
TH1 *	createHistogram (const char *name, const RooAbsRealLValue &xvar, RooLinkedList &argList) const
	Internal method implementing createHistogram.
TH1 *	createHistogram (RooStringView varNameList, Int_t xbins=0, Int_t ybins=0, Int_t zbins=0) const
	Create and fill a ROOT histogram TH1, TH2 or TH3 with the values of this function for the variables with given names.
RooFit::OwningPtr< RooAbsReal >	createIntegral (const RooArgSet &iset, const char *rangeName) const
	Create integral over observables in iset in range named rangeName.
RooFit::OwningPtr< RooAbsReal >	createIntegral (const RooArgSet &iset, const RooArgSet &nset, const char *rangeName=nullptr) const
	Create integral over observables in iset in range named rangeName with integrand normalized over observables in nset.
RooFit::OwningPtr< RooAbsReal >	createIntegral (const RooArgSet &iset, const RooArgSet &nset, const RooNumIntConfig &cfg, const char *rangeName=nullptr) const
	Create integral over observables in iset in range named rangeName with integrand normalized over observables in nset while using specified configuration for any numeric integration.
virtual RooFit::OwningPtr< RooAbsReal >	createIntegral (const RooArgSet &iset, const RooArgSet *nset=nullptr, const RooNumIntConfig *cfg=nullptr, const char *rangeName=nullptr) const
	Create an object that represents the integral of the function over one or more observables std::listed in iset.
RooFit::OwningPtr< RooAbsReal >	createIntegral (const RooArgSet &iset, const RooCmdArg &arg1, const RooCmdArg &arg2=RooCmdArg::none(), const RooCmdArg &arg3=RooCmdArg::none(), const RooCmdArg &arg4=RooCmdArg::none(), const RooCmdArg &arg5=RooCmdArg::none(), const RooCmdArg &arg6=RooCmdArg::none(), const RooCmdArg &arg7=RooCmdArg::none(), const RooCmdArg &arg8=RooCmdArg::none()) const
	Create an object that represents the integral of the function over one or more observables std::listed in iset.
RooFit::OwningPtr< RooAbsReal >	createIntegral (const RooArgSet &iset, const RooNumIntConfig &cfg, const char *rangeName=nullptr) const
	Create integral over observables in iset in range named rangeName using specified configuration for any numeric integration.
RooFit::OwningPtr< RooAbsReal >	createIntRI (const RooArgSet &iset, const RooArgSet &nset={})
	Utility function for createRunningIntegral.
const RooAbsReal *	createPlotProjection (const RooArgSet &dependentVars, const RooArgSet *projectedVars, RooArgSet *&cloneSet, const char *rangeName=nullptr, const RooArgSet *condObs=nullptr) const
	Utility function for plotOn() that creates a projection of a function or p.d.f to be plotted on a RooPlot.
const RooAbsReal *	createPlotProjection (const RooArgSet &depVars, const RooArgSet &projVars, RooArgSet *&cloneSet) const
	Utility function for plotOn() that creates a projection of a function or p.d.f to be plotted on a RooPlot.
virtual RooAbsReal *	createProfile (const RooArgSet &paramsOfInterest)
	Create a RooProfileLL object that eliminates all nuisance parameters in the present function.
RooFit::OwningPtr< RooAbsReal >	createRunningIntegral (const RooArgSet &iset, const RooArgSet &nset={})
	Calls createRunningIntegral(const RooArgSet&, const RooCmdArg&, const RooCmdArg&, const RooCmdArg&, const RooCmdArg&, const RooCmdArg&, const RooCmdArg&, const RooCmdArg&, const RooCmdArg&)
RooFit::OwningPtr< RooAbsReal >	createRunningIntegral (const RooArgSet &iset, const RooCmdArg &arg1, const RooCmdArg &arg2=RooCmdArg::none(), const RooCmdArg &arg3=RooCmdArg::none(), const RooCmdArg &arg4=RooCmdArg::none(), const RooCmdArg &arg5=RooCmdArg::none(), const RooCmdArg &arg6=RooCmdArg::none(), const RooCmdArg &arg7=RooCmdArg::none(), const RooCmdArg &arg8=RooCmdArg::none())
	Create an object that represents the running integral of the function over one or more observables std::listed in iset, i.e.
RooFit::OwningPtr< RooAbsReal >	createScanRI (const RooArgSet &iset, const RooArgSet &nset, Int_t numScanBins, Int_t intOrder)
	Utility function for createRunningIntegral that construct an object implementing the numeric scanning technique for calculating the running integral.
virtual double	defaultErrorLevel () const
RooDerivative *	derivative (RooRealVar &obs, const RooArgSet &normSet, Int_t order, double eps=0.001)
	Return function representing first, second or third order derivative of this function.
RooDerivative *	derivative (RooRealVar &obs, Int_t order=1, double eps=0.001)
	Return function representing first, second or third order derivative of this function.
virtual void	enableOffsetting (bool)
RooDataHist *	fillDataHist (RooDataHist *hist, const RooArgSet *nset, double scaleFactor, bool correctForBinVolume=false, bool showProgress=false) const
	Fill a RooDataHist with values sampled from this function at the bin centers.
TH1 *	fillHistogram (TH1 *hist, const RooArgList &plotVars, double scaleFactor=1, const RooArgSet *projectedVars=nullptr, bool scaling=true, const RooArgSet *condObs=nullptr, bool setError=true) const
	Fill the ROOT histogram 'hist' with values sampled from this function at the bin centers.
double	findRoot (RooRealVar &x, double xmin, double xmax, double yval)
	Return value of x (in range xmin,xmax) at which function equals yval.
virtual void	fixAddCoefNormalization (const RooArgSet &addNormSet=RooArgSet(), bool force=true)
	Fix the interpretation of the coefficient of any RooAddPdf component in the expression tree headed by this object to the given set of observables.
virtual void	fixAddCoefRange (const char *rangeName=nullptr, bool force=true)
	Fix the interpretation of the coefficient of any RooAddPdf component in the expression tree headed by this object to the given set of observables.
virtual void	forceNumInt (bool flag=true)
RooFunctor *	functor (const RooArgList &obs, const RooArgList &pars=RooArgList(), const RooArgSet &nset=RooArgSet()) const
	Return a RooFunctor object bound to this RooAbsReal with given definition of observables and parameters.
virtual Int_t	getAnalyticalIntegral (RooArgSet &allVars, RooArgSet &analVars, const char *rangeName=nullptr) const
	Interface function getAnalyticalIntergral advertises the analytical integrals that are supported.
bool	getForceNumInt () const
RooNumIntConfig *	getIntegratorConfig ()
	Return the numeric integration configuration used for this object.
const RooNumIntConfig *	getIntegratorConfig () const
	Return the numeric integration configuration used for this object.
virtual Int_t	getMaxVal (const RooArgSet &vars) const
	Advertise capability to determine maximum value of function for given set of observables.
const char *	getPlotLabel () const
	Get the label associated with the variable.
double	getPropagatedError (const RooFitResult &fr, const RooArgSet &nset=RooArgSet()) const
	Calculate error on self by linearly propagating errors on parameters using the covariance matrix from a fit result.
TString	getTitle (bool appendUnit=false) const
	Return this variable's title std::string.
const Text_t *	getUnit () const
double	getVal (const RooArgSet &normalisationSet) const
	Like getVal(const RooArgSet*), but always requires an argument for normalisation.
double	getVal (const RooArgSet *normalisationSet=nullptr) const
	Evaluate object.
virtual RooSpan< const double >	getValBatch (std::size_t, std::size_t, const RooArgSet *=nullptr)=delete
std::vector< double >	getValues (RooAbsData const &data) const
virtual RooSpan< const double >	getValues (RooBatchCompute::RunContext &evalData, const RooArgSet *normSet=nullptr) const
RooMultiGenFunction *	iGenFunction (const RooArgSet &observables, const RooArgSet &nset=RooArgSet())
RooGenFunction *	iGenFunction (RooRealVar &x, const RooArgSet &nset=RooArgSet())
bool	isIdentical (const RooAbsArg &other, bool assumeSameType=false) const override
virtual bool	isOffsetting () const
bool	isSelectedComp () const
	If true, the current pdf is a selected component (for use in plotting)
void	logEvalError (const char *message, const char *serverValueString=nullptr) const
	Log evaluation error message.
virtual double	maxVal (Int_t code) const
	Return maximum value for set of observables identified by code assigned in getMaxVal.
RooAbsMoment *	mean (RooRealVar &obs)
RooAbsMoment *	mean (RooRealVar &obs, const RooArgSet &nset)
virtual Int_t	minTrialSamples (const RooArgSet &) const
RooAbsMoment *	moment (RooRealVar &obs, const RooArgSet &normObs, Int_t order, bool central, bool takeRoot, bool intNormObs)
	Return function representing moment of p.d.f (normalized w.r.t given observables) of given order.
RooAbsMoment *	moment (RooRealVar &obs, Int_t order, bool central, bool takeRoot)
	Return function representing moment of function of given order.
virtual double	offset () const
bool	operator== (const RooAbsArg &other) const override
	Equality operator when comparing to another RooAbsArg.
bool	operator== (double value) const
	Equality operator comparing to a double.
virtual RooPlot *	plotSliceOn (RooPlot *frame, const RooArgSet &sliceSet, Option_t *drawOptions="L", double scaleFactor=1.0, ScaleType stype=Relative, const RooAbsData *projData=nullptr) const
virtual void	preferredObservableScanOrder (const RooArgSet &obs, RooArgSet &orderedObs) const
	Interface method for function objects to indicate their preferred order of observables for scanning their values into a (multi-dimensional) histogram or RooDataSet.
void	printMultiline (std::ostream &os, Int_t contents, bool verbose=false, TString indent="") const override
	Structure printing.
void	printValue (std::ostream &os) const override
	Print object value.
bool	readFromStream (std::istream &is, bool compact, bool verbose=false) override
	Read object contents from stream (dummy for now)
void	selectComp (bool flag)
void	setCachedValue (double value, bool notifyClients=true) final
	Overwrite the value stored in this object's cache.
virtual bool	setData (RooAbsData &, bool=true)
void	setIntegratorConfig ()
	Remove the specialized numeric integration configuration associated with this object.
void	setIntegratorConfig (const RooNumIntConfig &config)
	Set the given integrator configuration as default numeric integration configuration for this object.
void	setParameterizeIntegral (const RooArgSet &paramVars)
void	setPlotLabel (const char *label)
	Set the label associated with this variable.
void	setUnit (const char *unit)
RooAbsMoment *	sigma (RooRealVar &obs)
RooAbsMoment *	sigma (RooRealVar &obs, const RooArgSet &nset)
RooNumIntConfig *	specialIntegratorConfig () const
	Returns the specialized integrator configuration for this RooAbsReal.
RooNumIntConfig *	specialIntegratorConfig (bool createOnTheFly)
	Returns the specialized integrator configuration for this RooAbsReal.
void	StreamerNVirtual (TBuffer &ClassDef_StreamerNVirtual_b)
void	writeToStream (std::ostream &os, bool compact) const override
	Write object contents to stream (dummy for now)
Public Member Functions inherited from RooAbsArg
	RooAbsArg ()
	Default constructor.
	RooAbsArg (const char *name, const char *title)
	Create an object with the specified name and descriptive title.
	RooAbsArg (const RooAbsArg &other, const char *name=nullptr)
	Copy constructor transfers all boolean and string properties of the original object.
	~RooAbsArg () override
	Destructor.
bool	addOwnedComponents (const RooAbsCollection &comps)
	Take ownership of the contents of 'comps'.
bool	addOwnedComponents (RooAbsCollection &&comps)
	Take ownership of the contents of 'comps'.
bool	addOwnedComponents (RooArgList &&comps)
	Take ownership of the contents of 'comps'.
template<typename... Args_t>
bool	addOwnedComponents (std::unique_ptr< Args_t >... comps)
virtual void	applyWeightSquared (bool flag)
	Disables or enables the usage of squared weights.
void	attachArgs (const RooAbsCollection &set)
	Bind this node to objects in set.
void	attachDataSet (const RooAbsData &set)
	Replace server nodes with names matching the dataset variable names with those data set variables, making this PDF directly dependent on the dataset.
void	attachDataStore (const RooAbsDataStore &set)
	Replace server nodes with names matching the dataset variable names with those data set variables, making this PDF directly dependent on the dataset.
const std::set< std::string > &	attributes () const
TObject *	Clone (const char *newname=nullptr) const override
	Make a clone of an object using the Streamer facility.
virtual RooAbsArg *	cloneTree (const char *newname=nullptr) const
	Clone tree expression of objects.
Int_t	Compare (const TObject *other) const override
	Utility function used by TCollection::Sort to compare contained TObjects We implement comparison by name, resulting in alphabetical sorting by object name.
std::size_t	dataToken () const
	Returns the token for retrieving results in the BatchMode. For internal use only.
Int_t	defaultPrintContents (Option_t *opt) const override
	Define default contents to print.
bool	dependsOn (const RooAbsArg &server, const RooAbsArg *ignoreArg=nullptr, bool valueOnly=false) const
	Test whether we depend on (ie, are served by) the specified object.
bool	dependsOn (const RooAbsCollection &serverList, const RooAbsArg *ignoreArg=nullptr, bool valueOnly=false) const
	Test whether we depend on (ie, are served by) any object in the specified collection.
bool	dependsOn (TNamed const *namePtr, const RooAbsArg *ignoreArg=nullptr, bool valueOnly=false) const
	Test whether we depend on (ie, are served by) an object with a specific name.
bool	dependsOnValue (const RooAbsArg &server, const RooAbsArg *ignoreArg=nullptr) const
	Check whether this object depends on values served from the object passed as server.
bool	dependsOnValue (const RooAbsCollection &serverList, const RooAbsArg *ignoreArg=nullptr) const
	Check whether this object depends on values from an element in the serverList.
bool	getAttribute (const Text_t *name) const
	Check if a named attribute is set. By default, all attributes are unset.
RooLinkedList	getCloningAncestors () const
	Return ancestors in cloning chain of this RooAbsArg.
RooFit::OwningPtr< RooArgSet >	getComponents () const
	Create a RooArgSet with all components (branch nodes) of the expression tree headed by this object.
bool	getObservables (const RooAbsCollection *depList, RooArgSet &outputSet, bool valueOnly=true) const
	Create a list of leaf nodes in the arg tree starting with ourself as top node that match any of the names the args in the supplied argset.
RooFit::OwningPtr< RooArgSet >	getObservables (const RooAbsData &data) const
	Return the observables of this pdf given the observables defined by data.
RooFit::OwningPtr< RooArgSet >	getObservables (const RooAbsData *data) const
	Create a list of leaf nodes in the arg tree starting with ourself as top node that match any of the names of the variable list of the supplied data set (the dependents).
RooFit::OwningPtr< RooArgSet >	getObservables (const RooArgSet &set, bool valueOnly=true) const
	Given a set of possible observables, return the observables that this PDF depends on.
RooFit::OwningPtr< RooArgSet >	getObservables (const RooArgSet *depList, bool valueOnly=true) const
	Create a list of leaf nodes in the arg tree starting with ourself as top node that match any of the names the args in the supplied argset.
RooFit::OwningPtr< RooArgSet >	getParameters (const RooAbsData &data, bool stripDisconnected=true) const
	Return the parameters of this p.d.f when used in conjuction with dataset 'data'.
RooFit::OwningPtr< RooArgSet >	getParameters (const RooAbsData *data, bool stripDisconnected=true) const
	Create a list of leaf nodes in the arg tree starting with ourself as top node that don't match any of the names of the variable list of the supplied data set (the dependents).
RooFit::OwningPtr< RooArgSet >	getParameters (const RooArgSet &observables, bool stripDisconnected=true) const
	Return the parameters of the p.d.f given the provided set of observables.
RooFit::OwningPtr< RooArgSet >	getParameters (const RooArgSet *observables, bool stripDisconnected=true) const
	Create a list of leaf nodes in the arg tree starting with ourself as top node that don't match any of the names the args in the supplied argset.
virtual bool	getParameters (const RooArgSet *observables, RooArgSet &outputSet, bool stripDisconnected=true) const
	Fills a list with leaf nodes in the arg tree starting with ourself as top node that don't match any of the names the args in the supplied argset.
RooAbsProxy *	getProxy (Int_t index) const
	Return the nth proxy from the proxy list.
const Text_t *	getStringAttribute (const Text_t *key) const
	Get string attribute mapped under key 'key'.
bool	getTransientAttribute (const Text_t *name) const
	Check if a named attribute is set.
RooFit::OwningPtr< RooArgSet >	getVariables (bool stripDisconnected=true) const
	Return RooArgSet with all variables (tree leaf nodes of expresssion tree)
void	graphVizTree (const char *fileName, const char *delimiter="\n", bool useTitle=false, bool useLatex=false)
	Create a GraphViz .dot file visualizing the expression tree headed by this RooAbsArg object.
void	graphVizTree (std::ostream &os, const char *delimiter="\n", bool useTitle=false, bool useLatex=false)
	Write the GraphViz representation of the expression tree headed by this RooAbsArg object to the given ostream.
bool	hasClients () const
bool	hasDataToken () const
virtual bool	hasRange (const char *) const
virtual bool	importWorkspaceHook (RooWorkspace &ws)
virtual bool	inRange (const char *) const
virtual bool	isCategory () const
bool	isCloneOf (const RooAbsArg &other) const
	Check if this object was created as a clone of 'other'.
bool	isConstant () const
	Check if the "Constant" attribute is set.
virtual bool	isDerived () const
	Does value or shape of this arg depend on any other arg?
virtual bool	isReducerNode () const
bool	IsSortable () const override
bool	localNoDirtyInhibit () const
const TNamed *	namePtr () const
	De-duplicated pointer to this object's name.
Int_t	numProxies () const
	Return the number of registered proxies.
bool	observableOverlaps (const RooAbsData *dset, const RooAbsArg &testArg) const
	Test if any of the dependents of the arg tree (as determined by getObservables) overlaps with those of the testArg.
bool	observableOverlaps (const RooArgSet *depList, const RooAbsArg &testArg) const
	Test if any of the dependents of the arg tree (as determined by getObservables) overlaps with those of the testArg.
RooAbsArg &	operator= (const RooAbsArg &other)=delete
bool	overlaps (const RooAbsArg &testArg, bool valueOnly=false) const
	Test if any of the nodes of tree are shared with that of the given tree.
const RooArgSet *	ownedComponents () const
void	Print (Option_t *options=nullptr) const override
	Print the object to the defaultPrintStream().
void	printAddress (std::ostream &os) const override
	Print class name of object.
void	printArgs (std::ostream &os) const override
	Print object arguments, ie its proxies.
void	printClassName (std::ostream &os) const override
	Print object class name.
void	printCompactTree (const char *indent="", const char *fileName=nullptr, const char *namePat=nullptr, RooAbsArg *client=nullptr)
	Print tree structure of expression tree on stdout, or to file if filename is specified.
void	printCompactTree (std::ostream &os, const char *indent="", const char *namePat=nullptr, RooAbsArg *client=nullptr)
	Print tree structure of expression tree on given ostream.
virtual void	printCompactTreeHook (std::ostream &os, const char *ind="")
	Hook function interface for object to insert additional information when printed in the context of a tree structure.
void	printComponentTree (const char *indent="", const char *namePat=nullptr, Int_t nLevel=999)
	Print tree structure of expression tree on given ostream, only branch nodes are printed.
void	printDirty (bool depth=true) const
	Print information about current value dirty state information.
void	printName (std::ostream &os) const override
	Print object name.
void	printTitle (std::ostream &os) const override
	Print object title.
void	printTree (std::ostream &os, TString indent="") const override
	Print object tree structure.
bool	recursiveCheckObservables (const RooArgSet *nset) const
	Recursively call checkObservables on all nodes in the expression tree.
void	removeStringAttribute (const Text_t *key)
	Delete a string attribute with a given key.
void	resetDataToken ()
void	setAttribute (const Text_t *name, bool value=true)
	Set (default) or clear a named boolean attribute of this object.
void	setDataToken (std::size_t index)
	Sets the token for retrieving results in the BatchMode. For internal use only.
void	setLocalNoDirtyInhibit (bool flag) const
void	SetName (const char *name) override
	Set the name of the TNamed.
void	SetNameTitle (const char *name, const char *title) override
	Set all the TNamed parameters (name and title).
void	setProhibitServerRedirect (bool flag)
void	setStringAttribute (const Text_t *key, const Text_t *value)
	Associate string 'value' to this object under key 'key'.
void	setTransientAttribute (const Text_t *name, bool value=true)
	Set (default) or clear a named boolean attribute of this object.
void	setWorkspace (RooWorkspace &ws)
const std::map< std::string, std::string > &	stringAttributes () const
const std::set< std::string > &	transientAttributes () const
RooWorkspace *	workspace () const
TIterator *	clientIterator () const
	Retrieve a client iterator.
TIterator *	valueClientIterator () const
TIterator *	shapeClientIterator () const
TIterator *	serverIterator () const
RooFIter	valueClientMIterator () const
RooFIter	shapeClientMIterator () const
RooFIter	serverMIterator () const
RooFit::OwningPtr< RooArgSet >	getDependents (const RooArgSet &set) const
RooFit::OwningPtr< RooArgSet >	getDependents (const RooAbsData *set) const
RooFit::OwningPtr< RooArgSet >	getDependents (const RooArgSet *depList) const
bool	dependentOverlaps (const RooAbsData *dset, const RooAbsArg &testArg) const
bool	dependentOverlaps (const RooArgSet *depList, const RooAbsArg &testArg) const
bool	checkDependents (const RooArgSet *nset) const
bool	recursiveCheckDependents (const RooArgSet *nset) const
const RefCountList_t &	clients () const
	List of all clients of this object.
const RefCountList_t &	valueClients () const
	List of all value clients of this object. Value clients receive value updates.
const RefCountList_t &	shapeClients () const
	List of all shape clients of this object.
const RefCountList_t &	servers () const
	List of all servers of this object.
RooAbsArg *	findServer (const char *name) const
	Return server of this with name name. Returns nullptr if not found.
RooAbsArg *	findServer (const RooAbsArg &arg) const
	Return server of this that has the same name as arg. Returns nullptr if not found.
RooAbsArg *	findServer (Int_t index) const
	Return i-th server from server list.
bool	isValueServer (const RooAbsArg &arg) const
	Check if this is serving values to arg.
bool	isValueServer (const char *name) const
	Check if this is serving values to an object with name name.
bool	isShapeServer (const RooAbsArg &arg) const
	Check if this is serving shape to arg.
bool	isShapeServer (const char *name) const
	Check if this is serving shape to an object with name name.
void	leafNodeServerList (RooAbsCollection *list, const RooAbsArg *arg=nullptr, bool recurseNonDerived=false) const
	Fill supplied list with all leaf nodes of the arg tree, starting with ourself as top node.
void	branchNodeServerList (RooAbsCollection *list, const RooAbsArg *arg=nullptr, bool recurseNonDerived=false) const
	Fill supplied list with all branch nodes of the arg tree starting with ourself as top node.
void	treeNodeServerList (RooAbsCollection *list, const RooAbsArg *arg=nullptr, bool doBranch=true, bool doLeaf=true, bool valueOnly=false, bool recurseNonDerived=false) const
	Fill supplied list with nodes of the arg tree, following all server links, starting with ourself as top node.
virtual bool	isFundamental () const
	Is this object a fundamental type that can be added to a dataset? Fundamental-type subclasses override this method to return true.
virtual bool	isLValue () const
	Is this argument an l-value, i.e., can it appear on the left-hand side of an assignment expression? LValues are also special since they can potentially be analytically integrated and generated.
bool	redirectServers (const RooAbsCollection &newServerList, bool mustReplaceAll=false, bool nameChange=false, bool isRecursionStep=false)
	Replace all direct servers of this object with the new servers in newServerList.
bool	redirectServers (std::unordered_map< RooAbsArg *, RooAbsArg * > const &replacements)
	Replace some servers of this object.
bool	recursiveRedirectServers (const RooAbsCollection &newServerList, bool mustReplaceAll=false, bool nameChange=false, bool recurseInNewSet=true)
	Recursively replace all servers with the new servers in newSet.
virtual void	serverNameChangeHook (const RooAbsArg *, const RooAbsArg *)
void	addServer (RooAbsArg &server, bool valueProp=true, bool shapeProp=false, std::size_t refCount=1)
	Register another RooAbsArg as a server to us, ie, declare that we depend on it.
void	addServerList (RooAbsCollection &serverList, bool valueProp=true, bool shapeProp=false)
	Register a list of RooAbsArg as servers to us by calling addServer() for each arg in the list.
void	replaceServer (RooAbsArg &oldServer, RooAbsArg &newServer, bool valueProp, bool shapeProp)
	Replace 'oldServer' with 'newServer', specifying whether the new server has value or shape server properties.
void	changeServer (RooAbsArg &server, bool valueProp, bool shapeProp)
	Change dirty flag propagation mask for specified server.
void	removeServer (RooAbsArg &server, bool force=false)
	Unregister another RooAbsArg as a server to us, ie, declare that we no longer depend on its value and shape.
RooAbsArg *	findNewServer (const RooAbsCollection &newSet, bool nameChange) const
	Find the new server in the specified set that matches the old server.
virtual void	optimizeCacheMode (const RooArgSet &observables)
	Activate cache mode optimization with given definition of observables.
virtual void	optimizeCacheMode (const RooArgSet &observables, RooArgSet &optNodes, RooLinkedList &processedNodes)
	Activate cache mode optimization with given definition of observables.
bool	findConstantNodes (const RooArgSet &observables, RooArgSet &cacheList)
	Find branch nodes with all-constant parameters, and add them to the list of nodes that can be cached with a dataset in a test statistic calculation.
bool	findConstantNodes (const RooArgSet &observables, RooArgSet &cacheList, RooLinkedList &processedNodes)
	Find branch nodes with all-constant parameters, and add them to the list of nodes that can be cached with a dataset in a test statistic calculation.
virtual void	constOptimizeTestStatistic (ConstOpCode opcode, bool doAlsoTrackingOpt=true)
	Interface function signaling a request to perform constant term optimization.
bool	isShapeDirty () const
bool	isValueDirty () const
bool	isValueDirtyAndClear () const
bool	isValueOrShapeDirtyAndClear () const
void	registerCache (RooAbsCache &cache)
	Register RooAbsCache with this object.
void	unRegisterCache (RooAbsCache &cache)
	Unregister a RooAbsCache. Called from the RooAbsCache destructor.
Int_t	numCaches () const
	Return number of registered caches.
RooAbsCache *	getCache (Int_t index) const
	Return registered cache object by index.
OperMode	operMode () const
	Query the operation mode of this node.
void	setOperMode (OperMode mode, bool recurseADirty=true)
	Set the operation mode of this node.
void	setValueDirty ()
	Mark the element dirty. This forces a re-evaluation when a value is requested.
void	setShapeDirty ()
	Notify that a shape-like property (e.g. binning) has changed.
const char *	aggregateCacheUniqueSuffix () const
virtual const char *	cacheUniqueSuffix () const
void	wireAllCaches ()
RooExpensiveObjectCache &	expensiveObjectCache () const
virtual void	setExpensiveObjectCache (RooExpensiveObjectCache &cache)
Public Member Functions inherited from TNamed
	TNamed ()
	TNamed (const char *name, const char *title)
	TNamed (const TNamed &named)
	TNamed copy ctor.
	TNamed (const TString &name, const TString &title)
virtual	~TNamed ()
	TNamed destructor.
void	Clear (Option_t *option="") override
	Set name and title to empty strings ("").
TObject *	Clone (const char *newname="") const override
	Make a clone of an object using the Streamer facility.
Int_t	Compare (const TObject *obj) const override
	Compare two TNamed objects.
void	Copy (TObject &named) const override
	Copy this to obj.
virtual void	FillBuffer (char *&buffer)
	Encode TNamed into output buffer.
const char *	GetName () const override
	Returns name of object.
const char *	GetTitle () const override
	Returns title of object.
ULong_t	Hash () const override
	Return hash value for this object.
TClass *	IsA () const override
Bool_t	IsSortable () const override
void	ls (Option_t *option="") const override
	List TNamed name and title.
TNamed &	operator= (const TNamed &rhs)
	TNamed assignment operator.
void	Print (Option_t *option="") const override
	Print TNamed name and title.
virtual void	SetTitle (const char *title="")
	Set the title of the TNamed.
virtual Int_t	Sizeof () const
	Return size of the TNamed part of the TObject.
void	Streamer (TBuffer &) override
	Stream an object of class TObject.
void	StreamerNVirtual (TBuffer &ClassDef_StreamerNVirtual_b)
Public Member Functions inherited from TObject
	TObject ()
	TObject constructor.
	TObject (const TObject &object)
	TObject copy ctor.
virtual	~TObject ()
	TObject destructor.
void	AbstractMethod (const char *method) const
	Use this method to implement an "abstract" method that you don't want to leave purely abstract.
virtual void	AppendPad (Option_t *option="")
	Append graphics object to current pad.
virtual void	Browse (TBrowser *b)
	Browse object. May be overridden for another default action.
ULong_t	CheckedHash ()
	Check and record whether this class has a consistent Hash/RecursiveRemove setup (*) and then return the regular Hash value for this object.
virtual const char *	ClassName () const
	Returns name of class to which the object belongs.
virtual void	Delete (Option_t *option="")
	Delete this object.
virtual Int_t	DistancetoPrimitive (Int_t px, Int_t py)
	Computes distance from point (px,py) to the object.
virtual void	Draw (Option_t *option="")
	Default Draw method for all objects.
virtual void	DrawClass () const
	Draw class inheritance tree of the class to which this object belongs.
virtual TObject *	DrawClone (Option_t *option="") const
	Draw a clone of this object in the current selected pad with: gROOT->SetSelectedPad(c1).
virtual void	Dump () const
	Dump contents of object on stdout.
virtual void	Error (const char *method, const char *msgfmt,...) const
	Issue error message.
virtual void	Execute (const char *method, const char *params, Int_t *error=nullptr)
	Execute method on this object with the given parameter string, e.g.
virtual void	Execute (TMethod *method, TObjArray *params, Int_t *error=nullptr)
	Execute method on this object with parameters stored in the TObjArray.
virtual void	ExecuteEvent (Int_t event, Int_t px, Int_t py)
	Execute action corresponding to an event at (px,py).
virtual void	Fatal (const char *method, const char *msgfmt,...) const
	Issue fatal error message.
virtual TObject *	FindObject (const char *name) const
	Must be redefined in derived classes.
virtual TObject *	FindObject (const TObject *obj) const
	Must be redefined in derived classes.
virtual Option_t *	GetDrawOption () const
	Get option used by the graphics system to draw this object.
virtual const char *	GetIconName () const
	Returns mime type name of object.
virtual char *	GetObjectInfo (Int_t px, Int_t py) const
	Returns string containing info about the object at position (px,py).
virtual Option_t *	GetOption () const
virtual UInt_t	GetUniqueID () const
	Return the unique object id.
virtual Bool_t	HandleTimer (TTimer *timer)
	Execute action in response of a timer timing out.
Bool_t	HasInconsistentHash () const
	Return true is the type of this object is known to have an inconsistent setup for Hash and RecursiveRemove (i.e.
virtual void	Info (const char *method, const char *msgfmt,...) const
	Issue info message.
virtual Bool_t	InheritsFrom (const char *classname) const
	Returns kTRUE if object inherits from class "classname".
virtual Bool_t	InheritsFrom (const TClass *cl) const
	Returns kTRUE if object inherits from TClass cl.
virtual void	Inspect () const
	Dump contents of this object in a graphics canvas.
void	InvertBit (UInt_t f)
Bool_t	IsDestructed () const
	IsDestructed.
virtual Bool_t	IsEqual (const TObject *obj) const
	Default equal comparison (objects are equal if they have the same address in memory).
virtual Bool_t	IsFolder () const
	Returns kTRUE in case object contains browsable objects (like containers or lists of other objects).
R__ALWAYS_INLINE Bool_t	IsOnHeap () const
R__ALWAYS_INLINE Bool_t	IsZombie () const
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).
virtual Bool_t	Notify ()
	This method must be overridden to handle object notification.
void	Obsolete (const char *method, const char *asOfVers, const char *removedFromVers) const
	Use this method to declare a method obsolete.
void	operator delete (void *ptr)
	Operator delete.
void	operator delete[] (void *ptr)
	Operator delete [].
void *	operator new (size_t sz)
void *	operator new (size_t sz, void *vp)
void *	operator new[] (size_t sz)
void *	operator new[] (size_t sz, void *vp)
TObject &	operator= (const TObject &rhs)
	TObject assignment operator.
virtual void	Paint (Option_t *option="")
	This method must be overridden if a class wants to paint itself.
virtual void	Pop ()
	Pop on object drawn in a pad to the top of the display list.
virtual Int_t	Read (const char *name)
	Read contents of object with specified name from the current directory.
virtual void	RecursiveRemove (TObject *obj)
	Recursively remove this object from a list.
void	ResetBit (UInt_t f)
virtual void	SaveAs (const char *filename="", Option_t *option="") const
	Save this object in the file specified by filename.
virtual void	SavePrimitive (std::ostream &out, Option_t *option="")
	Save a primitive as a C++ statement(s) on output stream "out".
void	SetBit (UInt_t f)
void	SetBit (UInt_t f, Bool_t set)
	Set or unset the user status bits as specified in f.
virtual void	SetDrawOption (Option_t *option="")
	Set drawing option for object.
virtual void	SetUniqueID (UInt_t uid)
	Set the unique object id.
void	StreamerNVirtual (TBuffer &ClassDef_StreamerNVirtual_b)
virtual void	SysError (const char *method, const char *msgfmt,...) const
	Issue system error message.
R__ALWAYS_INLINE Bool_t	TestBit (UInt_t f) const
Int_t	TestBits (UInt_t f) const
virtual void	UseCurrentStyle ()
	Set current style settings in this object This function is called when either TCanvas::UseCurrentStyle or TROOT::ForceStyle have been invoked.
virtual void	Warning (const char *method, const char *msgfmt,...) const
	Issue warning message.
virtual Int_t	Write (const char *name=nullptr, Int_t option=0, Int_t bufsize=0)
	Write this object to the current directory.
virtual Int_t	Write (const char *name=nullptr, Int_t option=0, Int_t bufsize=0) const
	Write this object to the current directory.
Public Member Functions inherited from RooPrintable
	RooPrintable ()
virtual	~RooPrintable ()
virtual StyleOption	defaultPrintStyle (Option_t *opt) const
virtual void	printExtras (std::ostream &os) const
	Interface to print extras of object.
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'.
void	StreamerNVirtual (TBuffer &ClassDef_StreamerNVirtual_b)

Static Public Member Functions
static TClass *	Class ()
static const char *	Class_Name ()
static constexpr Version_t	Class_Version ()
static const char *	DeclFileName ()
Static Public Member Functions inherited from RooAbsPdf
static TClass *	Class ()
static const char *	Class_Name ()
static constexpr Version_t	Class_Version ()
static const char *	DeclFileName ()
static RooNumGenConfig *	defaultGeneratorConfig ()
	Returns the default numeric MC generator configuration for all RooAbsReals.
static int	verboseEval ()
	Return global level of verbosity for p.d.f. evaluations.
static void	verboseEval (Int_t stat)
	Change global level of verbosity for p.d.f. evaluations.
Static Public Member Functions inherited from RooAbsReal
static TClass *	Class ()
static const char *	Class_Name ()
static constexpr Version_t	Class_Version ()
static void	clearEvalErrorLog ()
	Clear the stack of evaluation error messages.
static const char *	DeclFileName ()
static RooNumIntConfig *	defaultIntegratorConfig ()
	Returns the default numeric integration configuration for all RooAbsReals.
static EvalErrorIter	evalErrorIter ()
static ErrorLoggingMode	evalErrorLoggingMode ()
	Return current evaluation error logging mode.
static bool	hideOffset ()
static void	logEvalError (const RooAbsReal *originator, const char *origName, const char *message, const char *serverValueString=nullptr)
	Interface to insert remote error logging messages received by RooRealMPFE into current error loggin stream.
static Int_t	numEvalErrorItems ()
static Int_t	numEvalErrors ()
	Return the number of logged evaluation errors since the last clearing.
static void	printEvalErrors (std::ostream &os=std::cout, Int_t maxPerNode=10000000)
	Print all outstanding logged evaluation error on the given ostream.
static void	setEvalErrorLoggingMode (ErrorLoggingMode m)
	Set evaluation error logging mode.
static void	setHideOffset (bool flag)
Static Public Member Functions inherited from RooAbsArg
static void	setDirtyInhibit (bool flag)
	Control global dirty inhibit mode.
static void	verboseDirty (bool flag)
	Activate verbose messaging related to dirty flag propagation.
Static Public Member Functions inherited from TNamed
static TClass *	Class ()
static const char *	Class_Name ()
static constexpr Version_t	Class_Version ()
static const char *	DeclFileName ()
Static Public Member Functions inherited from TObject
static TClass *	Class ()
static const char *	Class_Name ()
static constexpr Version_t	Class_Version ()
static const char *	DeclFileName ()
static Longptr_t	GetDtorOnly ()
	Return destructor only flag.
static Bool_t	GetObjectStat ()
	Get status of object stat flag.
static void	SetDtorOnly (void *obj)
	Set destructor only flag.
static void	SetObjectStat (Bool_t stat)
	Turn on/off tracking of objects in the TObjectTable.
Static Public Member Functions inherited from RooPrintable
static TClass *	Class ()
static const char *	Class_Name ()
static constexpr Version_t	Class_Version ()
static const char *	DeclFileName ()
static std::ostream &	defaultPrintStream (std::ostream *os=nullptr)
	Return a reference to the current default stream to use in Print().
static void	nameFieldLength (Int_t newLen)
	Set length of field reserved from printing name of RooAbsArgs in multi-line collection printing to given amount.

Protected Member Functions
bool	canComputeBatchWithCuda () const override
void	computeBatch (cudaStream_t *, double *output, size_t nEvents, RooFit::Detail::DataMap const &) const override
	Compute addition of PDFs in batches.
double	evaluate () const override
	Evaluate this PDF / function / constant. Needs to be overridden by all derived classes.
RooAbsGenContext *	genContext (const RooArgSet &vars, const RooDataSet *prototype=nullptr, const RooArgSet *auxProto=nullptr, bool verbose=false) const override
	Return specialized context to efficiently generate toy events from RooAddPdfs return RooAbsPdf::genContext(vars,prototype,auxProto,verbose) ; // WVE DEBUG.
AddCacheElem *	getProjCache (const RooArgSet *nset, const RooArgSet *iset=nullptr) const
	Manager of cache with coefficient projections and transformations.
double	getValV (const RooArgSet *set=nullptr) const override
	Calculate and return the current value.
bool	redirectServersHook (const RooAbsCollection &, bool, bool, bool) override
	The cache manager.
void	selectNormalization (const RooArgSet *depSet=nullptr, bool force=false) override
	Interface function used by test statistics to freeze choice of observables for interpretation of fraction coefficients.
void	selectNormalizationRange (const char *rangeName=nullptr, bool force=false) override
	Interface function used by test statistics to freeze choice of range for interpretation of fraction coefficients.
void	updateCoefficients (AddCacheElem &cache, const RooArgSet *nset, bool syncCoefValues=true) const
	Update the coefficient values in the given cache element: calculate new remainder fraction, normalize fractions obtained from extended ML terms to unity, and multiply the various range and dimensional corrections needed in the current use context.
Protected Member Functions inherited from RooAbsPdf
	RooAbsPdf (const RooAbsPdf &other, const char *name=nullptr)
	Copy constructor.
bool	isActiveNormSet (RooArgSet const *normSet) const
	Checks if normSet is the currently active normalization set of this PDF, meaning is exactly the same object as the one the _normSet member points to (or both are nullptr).
double	normalizeWithNaNPacking (double rawVal, double normVal) const
RooPlot *	plotOn (RooPlot *frame, PlotOpt o) const override
	Plot oneself on 'frame'.
Int_t *	randomizeProtoOrder (Int_t nProto, Int_t nGen, bool resample=false) const
	Return lookup table with randomized order for nProto prototype events.
virtual bool	syncNormalization (const RooArgSet *dset, bool adjustProxies=true) const
	Verify that the normalization integral cached with this PDF is valid for given set of normalization observables.
Protected Member Functions inherited from RooAbsReal
void	attachToTree (TTree &t, Int_t bufSize=32000) override
	Attach object to a branch of given TTree.
void	attachToVStore (RooVectorDataStore &vstore) override
RooFit::OwningPtr< RooFitResult >	chi2FitDriver (RooAbsReal &fcn, RooLinkedList &cmdList)
	Internal driver function for chi2 fits.
void	copyCache (const RooAbsArg *source, bool valueOnly=false, bool setValDirty=true) override
	Copy the cached value of another RooAbsArg to our cache.
RooFit::OwningPtr< RooAbsReal >	createIntObj (const RooArgSet &iset, const RooArgSet *nset, const RooNumIntConfig *cfg, const char *rangeName) const
	Internal utility function for createIntegral() that creates the actual integral object.
virtual RooSpan< double >	evaluateBatch (std::size_t, std::size_t)=delete
virtual RooSpan< double >	evaluateSpan (RooBatchCompute::RunContext &evalData, const RooArgSet *normSet) const
	Evaluate this object for a batch/span of data points.
void	fillTreeBranch (TTree &t) override
	Fill the tree branch that associated with this object with its current value.
void	findInnerMostIntegration (const RooArgSet &allObs, RooArgSet &innerObs, const char *rangeName) const
	Utility function for createIntObj() that aids in the construct of recursive integrals over functions with multiple observables with parameterized ranges.
TString	integralNameSuffix (const RooArgSet &iset, const RooArgSet *nset=nullptr, const char *rangeName=nullptr, bool omitEmpty=false) const
	Construct std::string with unique suffix name to give to integral object that encodes integrated observables, normalization observables and the integration range name.
bool	isValid () const override
	Check if current value is valid.
virtual bool	isValidReal (double, bool printError=false) const
	Interface function to check if given value is a valid value for this object. Returns true unless overridden.
void	makeProjectionSet (const RooAbsArg *plotVar, const RooArgSet *allVars, RooArgSet &projectedVars, bool silent) const
	Utility function for plotOn() that constructs the set of observables to project when plotting ourselves as function of 'plotVar'.
bool	matchArgs (const RooArgSet &allDeps, RooArgSet &numDeps, const RooArgProxy &a) const
	Utility function for use in getAnalyticalIntegral().
bool	matchArgs (const RooArgSet &allDeps, RooArgSet &numDeps, const RooArgProxy &a, const RooArgProxy &b) const
	Utility function for use in getAnalyticalIntegral().
bool	matchArgs (const RooArgSet &allDeps, RooArgSet &numDeps, const RooArgProxy &a, const RooArgProxy &b, const RooArgProxy &c) const
	Utility function for use in getAnalyticalIntegral().
bool	matchArgs (const RooArgSet &allDeps, RooArgSet &numDeps, const RooArgProxy &a, const RooArgProxy &b, const RooArgProxy &c, const RooArgProxy &d) const
	Utility function for use in getAnalyticalIntegral().
bool	matchArgs (const RooArgSet &allDeps, RooArgSet &numDeps, const RooArgSet &set) const
	Utility function for use in getAnalyticalIntegral().
virtual RooPlot *	plotAsymOn (RooPlot *frame, const RooAbsCategoryLValue &asymCat, PlotOpt o) const
void	plotOnCompSelect (RooArgSet *selNodes) const
	Helper function for plotting of composite p.d.fs.
RooPlot *	plotOnWithErrorBand (RooPlot *frame, const RooFitResult &fr, double Z, const RooArgSet *params, const RooLinkedList &argList, bool method1) const
	Plot function or PDF on frame with support for visualization of the uncertainty encoded in the given fit result fr.
bool	plotSanityChecks (RooPlot *frame) const
	Utility function for plotOn(), perform general sanity check on frame to ensure safe plotting operations.
void	setTreeBranchStatus (TTree &t, bool active) override
	(De)Activate associated tree branch
void	syncCache (const RooArgSet *set=nullptr) override
double	traceEval (const RooArgSet *set) const
	Calculate current value of object, with error tracing wrapper.
Protected Member Functions inherited from RooAbsArg
void	attachToStore (RooAbsDataStore &store)
	Attach this argument to the data store such that it reads data from there.
TString	cleanBranchName () const
	Construct a mangled name from the actual name that is free of any math symbols that might be interpreted by TTree.
void	clearShapeDirty () const
void	clearValueAndShapeDirty () const
void	clearValueDirty () const
virtual void	getObservablesHook (const RooArgSet *, RooArgSet *) const
virtual void	getParametersHook (const RooArgSet *, RooArgSet *, bool) const
void	graphVizAddConnections (std::set< std::pair< RooAbsArg *, RooAbsArg * > > &)
	Utility function that inserts all point-to-point client-server connections between any two RooAbsArgs in the expression tree headed by this object in the linkSet argument.
bool	inhibitDirty () const
	Delete watch flag.
virtual void	ioStreamerPass2 ()
	Method called by workspace container to finalize schema evolution issues that cannot be handled in a single ioStreamer pass.
virtual void	operModeHook ()
virtual void	optimizeDirtyHook (const RooArgSet *)
void	printAttribList (std::ostream &os) const
	Transient boolean attributes (not copied in ctor)
void	registerProxy (RooArgProxy &proxy)
	Register an RooArgProxy in the proxy list.
void	registerProxy (RooListProxy &proxy)
	Register an RooListProxy in the proxy list.
void	registerProxy (RooSetProxy &proxy)
	Register an RooSetProxy in the proxy list.
void	setProxyNormSet (const RooArgSet *nset)
	Forward a change in the cached normalization argset to all the registered proxies.
void	setShapeDirty (const RooAbsArg *source)
	Notify that a shape-like property (e.g. binning) has changed.
void	setValueDirty (const RooAbsArg *source)
	Force element to re-evaluate itself when a value is requested.
void	unRegisterProxy (RooArgProxy &proxy)
	Remove proxy from proxy list.
void	unRegisterProxy (RooListProxy &proxy)
	Remove proxy from proxy list.
void	unRegisterProxy (RooSetProxy &proxy)
	Remove proxy from proxy list.
Protected Member Functions inherited from TObject
virtual void	DoError (int level, const char *location, const char *fmt, va_list va) const
	Interface to ErrorHandler (protected).
void	MakeZombie ()

Protected Attributes
bool	_allExtendable = false
	Flag indicating if all PDF components are extendable.
RooAICRegistry	_codeReg
	! Registry of component analytical integration codes
std::vector< double >	_coefCache
	! Transient cache with transformed values of coefficients
Int_t	_coefErrCount
	! Coefficient error counter
RooListProxy	_coefList
	List of coefficients.
bool	_haveLastCoef = false
	Flag indicating if last PDFs coefficient was supplied in the ctor.
RooListProxy	_pdfList
	List of component PDFs.
RooObjCacheManager	_projCacheMgr
bool	_recursive = false
	Flag indicating is fractions are treated recursively.
RooSetProxy	_refCoefNorm
	Reference observable set for coefficient interpretation.
TNamed *	_refCoefRangeName = nullptr
	Reference range name for coefficient interpreation.
RooArgList *	_snormList {nullptr}
	! List of supplemental normalization factors
Protected Attributes inherited from RooAbsPdf
Int_t	_errorCount
	Number of errors remaining to print.
Int_t	_negCount
	Number of negative probablities remaining to print.
RooAbsReal *	_norm = nullptr
RooObjCacheManager	_normMgr
TString	_normRange
	Normalization range.
RooArgSet const *	_normSet = nullptr
	Normalization integral (owned by _normMgr)
double	_rawValue
bool	_selectComp
	Component selection flag for RooAbsPdf::plotCompOn.
std::unique_ptr< RooNumGenConfig >	_specGeneratorConfig
	! MC generator configuration specific for this object
Int_t	_traceCount
	Number of traces remaining to print.
Protected Attributes inherited from RooAbsReal
bool	_forceNumInt
	Force numerical integration if flag set.
TString	_label
	Plot label for objects value.
RooArgSet *	_lastNSet
	!
Int_t	_plotBins
	Number of plot bins.
double	_plotMax
	Maximum of plot range.
double	_plotMin
	Minimum of plot range.
bool	_selectComp
RooNumIntConfig *	_specIntegratorConfig
TString	_unit
	Unit for objects value.
double	_value
	Cache for current value of object.
Protected Attributes inherited from RooAbsArg
std::set< std::string >	_boolAttrib
std::set< std::string >	_boolAttribTransient
std::vector< RooAbsCache * >	_cacheList
RefCountList_t	_clientList
RefCountList_t	_clientListShape
RefCountList_t	_clientListValue
std::size_t	_dataToken = std::numeric_limits<std::size_t>::max()
	In which workspace do I live, if any.
bool	_deleteWatch
RooExpensiveObjectCache *	_eocache {nullptr}
	Prohibit server redirects – Debugging tool.
bool	_fast = false
bool	_isConstant
	De-duplicated name pointer. This will be equal for all objects with the same name.
bool	_localNoInhibitDirty
	Cached isConstant status.
RooWorkspace *	_myws
	Prevent 'AlwaysDirty' mode for this node.
const TNamed *	_namePtr
	Pointer to global cache manager for any expensive components created by this object.
OperMode	_operMode
RooArgSet *	_ownedComponents
bool	_prohibitServerRedirect
	Set of owned component.
RooRefArray	_proxyList
ProxyListCache	_proxyListCache
RefCountList_t	_serverList
bool	_shapeDirty
std::map< std::string, std::string >	_stringAttrib
bool	_valueDirty
Protected Attributes inherited from TNamed
TString	fName
TString	fTitle

Private Member Functions
void	finalizeConstruction ()
std::pair< const RooArgSet *, AddCacheElem * >	getNormAndCache (const RooArgSet *nset) const
	Look up projection cache and per-PDF norm sets.

Private Attributes
std::unique_ptr< const RooArgSet >	_copyOfLastNormSet = nullptr
	!
RooFit::UniqueId< RooArgSet >::Value_t	_idOfLastUsedNormSet = RooFit::UniqueId<RooArgSet>::nullval
	!

Friends
class	RooAddGenContext
class	RooAddModel

Additional Inherited Members
Public Types inherited from RooAbsPdf
enum	ExtendMode { CanNotBeExtended , CanBeExtended , MustBeExtended }
Public Types inherited from RooAbsReal
enum	ErrorLoggingMode { PrintErrors , CollectErrors , CountErrors , Ignore }
typedef std::map< constRooAbsArg *, std::pair< std::string, std::list< EvalError > > >::const_iterator	EvalErrorIter
enum	ScaleType { Raw , Relative , NumEvent , RelativeExpected }
using	value_type = double
Public Types inherited from RooAbsArg
enum	CacheMode { Always =0 , NotAdvised =1 , Never =2 }
enum	ConstOpCode { Activate =0 , DeActivate =1 , ConfigChange =2 , ValueChange =3 }
enum	OperMode { Auto =0 , AClean =1 , ADirty =2 }
using	RefCountList_t = RooSTLRefCountList< RooAbsArg >
using	RefCountListLegacyIterator_t = TIteratorToSTLInterface< RefCountList_t::Container_t >
Public Types inherited from TObject
enum	{   kIsOnHeap = 0x01000000 , kNotDeleted = 0x02000000 , kZombie = 0x04000000 , kInconsistent = 0x08000000 ,   kBitMask = 0x00ffffff }
enum	{ kSingleKey = (1ULL << ( 0 )) , kOverwrite = (1ULL << ( 1 )) , kWriteDelete = (1ULL << ( 2 )) }
enum	EDeprecatedStatusBits { kObjInCanvas = (1ULL << ( 3 )) }
enum	EStatusBits {   kCanDelete = (1ULL << ( 0 )) , kMustCleanup = (1ULL << ( 3 )) , kIsReferenced = (1ULL << ( 4 )) , kHasUUID = (1ULL << ( 5 )) ,   kCannotPick = (1ULL << ( 6 )) , kNoContextMenu = (1ULL << ( 8 )) , kInvalidObject = (1ULL << ( 13 )) }
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 }
Protected Types inherited from TObject
enum	{ kOnlyPrepStep = (1ULL << ( 3 )) }
Static Protected Member Functions inherited from RooAbsReal
static void	globalSelectComp (bool flag)
	Global switch controlling the activation of the selectComp() functionality.
Static Protected Member Functions inherited from RooAbsArg
static void	ioStreamerPass2Finalize ()
	Method called by workspace container to finalize schema evolution issues that cannot be handled in a single ioStreamer pass.
Static Protected Attributes inherited from RooAbsPdf
static TString	_normRangeOverride
static Int_t	_verboseEval = 0
Static Protected Attributes inherited from RooAbsReal
static bool	_globalSelectComp = false
	Component selection flag for RooAbsPdf::plotCompOn.
static bool	_hideOffset = true
	Offset hiding flag.
Static Protected Attributes inherited from RooAbsArg
static bool	_inhibitDirty
static bool	_verboseDirty
	cache of the list of proxies. Avoids type casting.
Static Protected Attributes inherited from RooPrintable
static Int_t	_nameLength

#include <RooAddPdf.h>

Inheritance diagram for RooAddPdf:

Constructor & Destructor Documentation

RooAddPdf() [1/6]

RooAddPdf::RooAddPdf ( )

inline

Definition at line 37 of file RooAddPdf.h.

RooAddPdf() [2/6]

RooAddPdf::RooAddPdf	(	const char *	name,
		const char *	title = nullptr
	)

Dummy constructor.

Definition at line 95 of file RooAddPdf.cxx.

RooAddPdf() [3/6]

RooAddPdf::RooAddPdf	(	const char *	name,
		const char *	title,
		RooAbsPdf &	pdf1,
		RooAbsPdf &	pdf2,
		RooAbsReal &	coef1
	)

Constructor with two PDFs and one coefficient.

Definition at line 132 of file RooAddPdf.cxx.

RooAddPdf() [4/6]

RooAddPdf::RooAddPdf	(	const char *	name,
		const char *	title,
		const RooArgList &	inPdfList
	)

Generic constructor from list of extended PDFs.

There are no coefficients as the expected number of events from each components determine the relative weight of the PDFs.

All PDFs must inherit from RooAbsPdf.

Definition at line 252 of file RooAddPdf.cxx.

RooAddPdf() [5/6]

RooAddPdf::RooAddPdf	(	const char *	name,
		const char *	title,
		const RooArgList &	inPdfList,
		const RooArgList &	inCoefList,
		bool	recursiveFractions = false
	)

Generic constructor from list of PDFs and list of coefficients.

Each pdf list element (i) is paired with coefficient list element (i). The number of coefficients must be either equal to the number of PDFs, in which case extended MLL fitting is enabled, or be one less.

All PDFs must inherit from RooAbsPdf. All coefficients must inherit from RooAbsReal

If the recursiveFraction flag is true, the coefficients are interpreted as recursive coefficients as explained in the class description.

Definition at line 155 of file RooAddPdf.cxx.

RooAddPdf() [6/6]

RooAddPdf::RooAddPdf	(	const RooAddPdf &	other,
		const char *	name = nullptr
	)

Copy constructor.

Definition at line 285 of file RooAddPdf.cxx.

~RooAddPdf()

RooAddPdf::~RooAddPdf ( )

inlineoverride

Definition at line 46 of file RooAddPdf.h.

Member Function Documentation

analyticalIntegralWN()

double RooAddPdf::analyticalIntegralWN ( Int_t  code, const RooArgSet *  normSet, const char *  rangeName = nullptr  ) const

overridevirtual

Return analytical integral defined by given scenario code.

Reimplemented from RooAbsPdf.

Definition at line 642 of file RooAddPdf.cxx.

binBoundaries()

std::list< double > * RooAddPdf::binBoundaries ( RooAbsRealLValue &  obs, double  xlo, double  xhi  ) const

overridevirtual

Loop over components for plot sampling hints and merge them if there are multiple.

Reimplemented from RooAbsReal.

Definition at line 860 of file RooAddPdf.cxx.

canComputeBatchWithCuda()

bool RooAddPdf::canComputeBatchWithCuda ( ) const

inlineoverrideprotectedvirtual

Reimplemented from RooAbsArg.

Definition at line 126 of file RooAddPdf.h.

canNodeBeCached()

CacheMode RooAddPdf::canNodeBeCached ( ) const

inlineoverridevirtual

Reimplemented from RooAbsArg.

Definition at line 94 of file RooAddPdf.h.

checkObservables()

bool RooAddPdf::checkObservables ( const RooArgSet *  nset ) const

overridevirtual

Check if PDF is valid for given normalization set.

Coeffient and PDF must be non-overlapping, but pdf-coefficient pairs may overlap each other

Reimplemented from RooAbsArg.

Definition at line 561 of file RooAddPdf.cxx.

Class()

static TClass * RooAddPdf::Class ( )

static

Returns

TClass describing this class

Class_Name()

static const char * RooAddPdf::Class_Name ( )

static

Returns

Name of this class

Class_Version()

static constexpr Version_t RooAddPdf::Class_Version ( )

inlinestaticconstexpr

Returns

Version of this class

Definition at line 150 of file RooAddPdf.h.

clone()

TObject * RooAddPdf::clone ( const char *  newname ) const

inlineoverridevirtual

Implements RooAbsArg.

Definition at line 45 of file RooAddPdf.h.

coefList()

const RooArgList & RooAddPdf::coefList ( ) const

inline

Definition at line 75 of file RooAddPdf.h.

compileForNormSet()

std::unique_ptr< RooAbsArg > RooAddPdf::compileForNormSet ( RooArgSet const &  normSet, RooFit::Detail::CompileContext &  ctx  ) const

overridevirtual

Reimplemented from RooAbsPdf.

Definition at line 905 of file RooAddPdf.cxx.

computeBatch()

void RooAddPdf::computeBatch ( cudaStream_t *  stream, double *  output, size_t  nEvents, RooFit::Detail::DataMap const &  dataMap  ) const

overrideprotectedvirtual

Compute addition of PDFs in batches.

Reimplemented from RooAbsReal.

Definition at line 502 of file RooAddPdf.cxx.

createExpectedEventsFunc()

std::unique_ptr< RooAbsReal > RooAddPdf::createExpectedEventsFunc ( const RooArgSet *  nset ) const

overridevirtual

Returns an object that represents the expected number of events for a given normalization set, similar to how createIntegral() returns an object that returns the integral.

This is used to build the computation graph for the final likelihood.

Reimplemented from RooAbsPdf.

Definition at line 734 of file RooAddPdf.cxx.

DeclFileName()

static const char * RooAddPdf::DeclFileName ( )

inlinestatic

Returns

Name of the file containing the class declaration

Definition at line 150 of file RooAddPdf.h.

evaluate()

double RooAddPdf::evaluate ( ) const

inlineoverrideprotectedvirtual

Evaluate this PDF / function / constant. Needs to be overridden by all derived classes.

Implements RooAbsReal.

Definition at line 121 of file RooAddPdf.h.

expectedEvents()

double RooAddPdf::expectedEvents ( const RooArgSet *  nset ) const

overridevirtual

Return expected number of events for extended likelihood calculation, which is the sum of all coefficients.

Return the number of expected events, which is either the sum of all coefficients or the sum of the components extended terms, multiplied with the fraction that is in the current range w.r.t the reference range.

Reimplemented from RooAbsPdf.

Definition at line 700 of file RooAddPdf.cxx.

extendMode()

ExtendMode RooAddPdf::extendMode ( ) const

inlineoverridevirtual

Returns ability of PDF to provide extended likelihood terms.

Possible answers are in the enumerator RooAbsPdf::ExtendMode. This default implementation always returns CanNotBeExtended.

Reimplemented from RooAbsPdf.

Definition at line 61 of file RooAddPdf.h.

finalizeConstruction()

void RooAddPdf::finalizeConstruction ( )

private

Definition at line 107 of file RooAddPdf.cxx.

fixCoefNormalization()

void RooAddPdf::fixCoefNormalization

(

const RooArgSet &

refCoefNorm

)

By default the interpretation of the fraction coefficients is performed in the contextual choice of observables.

This makes the shape of the p.d.f explicitly dependent on the choice of observables. This method instructs RooAddPdf to freeze the interpretation of the coefficients to be done in the given set of observables. If frozen, fractions are automatically transformed from the reference normalization set to the contextual normalization set by ratios of integrals.

Definition at line 313 of file RooAddPdf.cxx.

fixCoefRange()

void RooAddPdf::fixCoefRange

(

const char *

rangeName

)

By default, fraction coefficients are assumed to refer to the default fit range.

This makes the shape of a RooAddPdf explicitly dependent on the range of the observables. Calling this function allows for a range-independent definition of the fractions, because it ties all coefficients to the given named range. If the normalisation range is different from this reference range, the appropriate fraction coefficients are automatically calculated from the reference fractions by integrating over the ranges, and comparing these integrals.

Definition at line 338 of file RooAddPdf.cxx.

forceAnalyticalInt()

bool RooAddPdf::forceAnalyticalInt ( const RooAbsArg &  ) const

inlineoverridevirtual

Force RooRealIntegral to offer all observables for internal integration.

Reimplemented from RooAbsReal.

Definition at line 51 of file RooAddPdf.h.

genContext()

RooAbsGenContext * RooAddPdf::genContext ( const RooArgSet &  vars, const RooDataSet *  prototype = nullptr, const RooArgSet *  auxProto = nullptr, bool  verbose = false  ) const

overrideprotectedvirtual

Return specialized context to efficiently generate toy events from RooAddPdfs return RooAbsPdf::genContext(vars,prototype,auxProto,verbose) ; // WVE DEBUG.

Reimplemented from RooAbsPdf.

Definition at line 840 of file RooAddPdf.cxx.

getAnalyticalIntegralWN()

Int_t RooAddPdf::getAnalyticalIntegralWN ( RooArgSet &  allVars, RooArgSet &  analVars, const RooArgSet *  normSet, const char *  rangeName = nullptr  ) const

overridevirtual

Determine which part (if any) of given integral can be performed analytically.

If any analytical integration is possible, return integration scenario code

RooAddPdf queries each component PDF for its analytical integration capability of the requested set ('allVars'). It finds the largest common set of variables that can be integrated by all components. If such a set exists, it reconfirms that each component is capable of analytically integrating the common set, and combines the components individual integration codes into a single integration code valid for RooAddPdf.

Reimplemented from RooAbsReal.

Definition at line 577 of file RooAddPdf.cxx.

getCoefNormalization()

const RooArgSet & RooAddPdf::getCoefNormalization ( ) const

inline

Definition at line 83 of file RooAddPdf.h.

getCoefRange()

const char * RooAddPdf::getCoefRange ( ) const

inline

Definition at line 84 of file RooAddPdf.h.

getNormAndCache()

std::pair< const RooArgSet *, AddCacheElem * > RooAddPdf::getNormAndCache ( const RooArgSet *  nset ) const

private

Look up projection cache and per-PDF norm sets.

If a PDF doesn't have a special norm set, use the defaultNorm. If defaultNorm == nullptr, use the member _normSet.

Definition at line 412 of file RooAddPdf.cxx.

getProjCache()

AddCacheElem * RooAddPdf::getProjCache ( const RooArgSet *  nset, const RooArgSet *  iset = nullptr  ) const

protected

Manager of cache with coefficient projections and transformations.

Retrieve cache element for the computation of the PDF normalisation.

Parameters

[in]	nset	Current normalisation set (integration over these variables yields 1).
[in]	iset	Integration set. Variables to be integrated over (if integrations are performed).
[in]	rangeName	Reference range for the integrals.

If a cache element does not exist, create and fill it on the fly. The cache also contains

• Supplemental normalization terms (in case not all added p.d.f.s have the same observables)
• Projection integrals to calculate transformed fraction coefficients when a frozen reference frame is provided
• Projection integrals for similar transformations when a frozen reference range is provided.

Definition at line 360 of file RooAddPdf.cxx.

getValV()

double RooAddPdf::getValV ( const RooArgSet *  set = nullptr ) const

overrideprotectedvirtual

Calculate and return the current value.

Reimplemented from RooAbsPdf.

Definition at line 466 of file RooAddPdf.cxx.

IsA()

TClass * RooAddPdf::IsA ( ) const

inlineoverridevirtual

Returns

TClass describing current object

Reimplemented from RooAbsPdf.

Definition at line 150 of file RooAddPdf.h.

isBinnedDistribution()

bool RooAddPdf::isBinnedDistribution ( const RooArgSet &  obs ) const

overridevirtual

If all components that depend on obs are binned, so is their sum.

Reimplemented from RooAbsReal.

Definition at line 868 of file RooAddPdf.cxx.

pdfList()

const RooArgList & RooAddPdf::pdfList ( ) const

inline

Definition at line 71 of file RooAddPdf.h.

plotSamplingHint()

std::list< double > * RooAddPdf::plotSamplingHint ( RooAbsRealLValue &  obs, double  xlo, double  xhi  ) const

overridevirtual

Loop over components for plot sampling hints and merge them if there are multiple.

Reimplemented from RooAbsReal.

Definition at line 851 of file RooAddPdf.cxx.

printMetaArgs()

void RooAddPdf::printMetaArgs ( std::ostream &  os ) const

overridevirtual

Customized printing of arguments of a RooAddPdf to more intuitively reflect the contents of the product operator construction.

Reimplemented from RooAbsArg.

Definition at line 888 of file RooAddPdf.cxx.

redirectServersHook()

bool RooAddPdf::redirectServersHook ( const RooAbsCollection &  newServerList, bool  mustReplaceAll, bool  nameChange, bool  isRecursiveStep  )

overrideprotectedvirtual

The cache manager.

Hook function intercepting redirectServer calls.

Discard current normalization object if any server is redirected

Reimplemented from RooAbsPdf.

Definition at line 894 of file RooAddPdf.cxx.

resetErrorCounters()

void RooAddPdf::resetErrorCounters ( Int_t  resetValue = 10 )

overridevirtual

Reset error counter to given value, limiting the number of future error messages for this pdf to 'resetValue'.

Reimplemented from RooAbsPdf.

Definition at line 548 of file RooAddPdf.cxx.

selectNormalization()

void RooAddPdf::selectNormalization ( const RooArgSet *  depSet = nullptr, bool  force = false  )

overrideprotectedvirtual

Interface function used by test statistics to freeze choice of observables for interpretation of fraction coefficients.

Reimplemented from RooAbsReal.

Definition at line 804 of file RooAddPdf.cxx.

selectNormalizationRange()

void RooAddPdf::selectNormalizationRange ( const char *  rangeName = nullptr, bool  force = false  )

overrideprotectedvirtual

Interface function used by test statistics to freeze choice of range for interpretation of fraction coefficients.

Reimplemented from RooAbsReal.

Definition at line 825 of file RooAddPdf.cxx.

selfNormalized()

bool RooAddPdf::selfNormalized ( ) const

inlineoverridevirtual

Shows if a PDF is self-normalized, which means that no attempt is made to add a normalization term.

Always returns false, unless a PDF overrides this function.

Reimplemented from RooAbsPdf.

Definition at line 56 of file RooAddPdf.h.

setCacheAndTrackHints()

void RooAddPdf::setCacheAndTrackHints ( RooArgSet &  trackNodes )

overridevirtual

Label OK'ed components of a RooAddPdf with cache-and-track.

Reimplemented from RooAbsArg.

Definition at line 877 of file RooAddPdf.cxx.

Streamer()

void RooAddPdf::Streamer ( TBuffer &  R__b )

overridevirtual

Stream an object of class TObject.

Reimplemented from RooAbsPdf.

StreamerNVirtual()

void RooAddPdf::StreamerNVirtual ( TBuffer &  ClassDef_StreamerNVirtual_b )

inline

Definition at line 150 of file RooAddPdf.h.

updateCoefficients()

void RooAddPdf::updateCoefficients ( AddCacheElem &  cache, const RooArgSet *  nset, bool  syncCoefValues = true  ) const

protected

Update the coefficient values in the given cache element: calculate new remainder fraction, normalize fractions obtained from extended ML terms to unity, and multiply the various range and dimensional corrections needed in the current use context.

param[in] cache The cache element for the given normalization set that stores the supplementary normalization values and projection-related objects. param[in] nset The set of variables to normalize over. param[in] syncCoefValues If the initial values of the coefficients still need to be copied from the _coefList elements to the _coefCache. True by default.

Definition at line 396 of file RooAddPdf.cxx.

Friends And Related Symbol Documentation

RooAddGenContext

friend class RooAddGenContext

friend

Definition at line 115 of file RooAddPdf.h.

RooAddModel

friend class RooAddModel

friend

Definition at line 116 of file RooAddPdf.h.

Member Data Documentation

_allExtendable

bool RooAddPdf::_allExtendable = false

protected

Flag indicating if all PDF components are extendable.

Definition at line 136 of file RooAddPdf.h.

_codeReg

RooAICRegistry RooAddPdf::_codeReg

mutableprotected

! Registry of component analytical integration codes

Definition at line 129 of file RooAddPdf.h.

_coefCache

std::vector<double> RooAddPdf::_coefCache

mutableprotected

! Transient cache with transformed values of coefficients

Definition at line 107 of file RooAddPdf.h.

_coefErrCount

Int_t RooAddPdf::_coefErrCount

mutableprotected

! Coefficient error counter

Definition at line 139 of file RooAddPdf.h.

_coefList

RooListProxy RooAddPdf::_coefList

protected

List of coefficients.

Definition at line 132 of file RooAddPdf.h.

_copyOfLastNormSet

std::unique_ptr<const RooArgSet> RooAddPdf::_copyOfLastNormSet = nullptr

mutableprivate

!

Definition at line 146 of file RooAddPdf.h.

_haveLastCoef

bool RooAddPdf::_haveLastCoef = false

protected

Flag indicating if last PDFs coefficient was supplied in the ctor.

Definition at line 135 of file RooAddPdf.h.

_idOfLastUsedNormSet

RooFit::UniqueId<RooArgSet>::Value_t RooAddPdf::_idOfLastUsedNormSet = RooFit::UniqueId<RooArgSet>::nullval

mutableprivate

!

Definition at line 145 of file RooAddPdf.h.

_pdfList

RooListProxy RooAddPdf::_pdfList

protected

List of component PDFs.

Definition at line 131 of file RooAddPdf.h.

_projCacheMgr

RooObjCacheManager RooAddPdf::_projCacheMgr

mutableprotected

Definition at line 110 of file RooAddPdf.h.

_recursive

bool RooAddPdf::_recursive = false

protected

Flag indicating is fractions are treated recursively.

Definition at line 137 of file RooAddPdf.h.

_refCoefNorm

RooSetProxy RooAddPdf::_refCoefNorm

mutableprotected

Reference observable set for coefficient interpretation.

Definition at line 104 of file RooAddPdf.h.

_refCoefRangeName

TNamed* RooAddPdf::_refCoefRangeName = nullptr

mutableprotected

Reference range name for coefficient interpreation.

Definition at line 105 of file RooAddPdf.h.

_snormList

RooArgList* RooAddPdf::_snormList {nullptr}

mutableprotected

! List of supplemental normalization factors

Definition at line 133 of file RooAddPdf.h.

Libraries for RooAddPdf:

---

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

• roofit/roofitcore/inc/RooAddPdf.h
• roofit/roofitcore/src/RooAddPdf.cxx