A RooFormulaVar is a generic implementation of a real-valued object, which takes a RooArgList of servers and a C++ expression string defining how its value should be calculated from the given list of servers.

RooFormulaVar uses a RooFormula object to perform the expression evaluation.

If RooAbsPdf objects are supplied to RooFormulaVar as servers, their raw (unnormalized) values will be evaluated. Use RooGenericPdf, which constructs generic PDF functions, to access their properly normalized values.

The string expression can be any valid TFormula expression referring to the listed servers either by name or by their ordinal list position. These three are equivalent:

RooFormulaVar("gen", "x*y", RooArgList(x,y))       // reference by name
RooFormulaVar("gen", "@0*@1", RooArgList(x,y))     // reference by ordinal with @
RooFormulaVar("gen", "x[0]*x[1]", RooArgList(x,y)) // TFormula-builtin reference by ordinal

Note that x[i] is an expression reserved for TFormula. All variable references are automatically converted to the TFormula-native format. If a variable with the name x is given, the RooFormula interprets x[i] as a list position, but x without brackets as the name of a RooFit object.

The last two versions, while slightly less readable, are more versatile because the names of the arguments are not hard coded.

Definition at line 30 of file RooFormulaVar.h.

Public Member Functions
	RooFormulaVar ()

	RooFormulaVar (const char name, const char title, const char *formula, const RooArgList &dependents, bool checkVariables=true)
	Constructor with formula expression and list of input variables.

	RooFormulaVar (const char name, const char title, const RooArgList &dependents, bool checkVariables=true)
	Constructor with formula expression, title and list of input variables.

	RooFormulaVar (const RooFormulaVar &other, const char *name=nullptr)
	Copy constructor.

	~RooFormulaVar () override

std::list< double > *	binBoundaries (RooAbsRealLValue &, double, double) const override
	Forward the plot sampling hint from the p.d.f. that defines the observable obs.

TObject *	clone (const char *newname) const override

void	computeBatch (double *output, size_t nEvents, RooFit::Detail::DataMap const &dataMap) const override
	Base function for computing multiple values of a RooAbsReal.

double	defaultErrorLevel () const override
	Return the default error level for MINUIT error analysis If the formula contains one or more RooNLLVars and no RooChi2Vars, return the defaultErrorLevel() of RooNLLVar.

const RooArgList &	dependents () const

void	dumpFormula ()
	Dump the formula to stdout.

double	evaluate () const override
	Calculate current value of object from internal formula.

const char *	expression () const

RooAbsArg *	getParameter (const char *name) const
	Return pointer to parameter with given name.

RooAbsArg *	getParameter (Int_t index) const
	Return pointer to parameter at given index.

TClass *	IsA () const override

size_t	nParameters () const
	Return the number of parameters.

bool	ok () const

std::list< double > *	plotSamplingHint (RooAbsRealLValue &, double, double) const override
	Forward the plot sampling hint from the p.d.f. that defines the observable obs.

void	printMetaArgs (std::ostream &os) const override
	Add formula expression as meta argument in printing interface.

void	printMultiline (std::ostream &os, Int_t contents, bool verbose=false, TString indent="") const override
	Print info about this object to the specified stream.

bool	readFromStream (std::istream &is, bool compact, bool verbose=false) override
	Read object contents from given stream.

void	Streamer (TBuffer &) override
	Stream an object of class TObject.

void	StreamerNVirtual (TBuffer &ClassDef_StreamerNVirtual_b)

void	writeToStream (std::ostream &os, bool compact) const override
	Write object contents to given stream.

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.

virtual double	analyticalIntegralWN (Int_t code, const RooArgSet normSet, 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.

RooFit::OwningPtr< 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).

virtual std::string	buildCallToAnalyticIntegral (Int_t code, const char *rangeName, RooFit::Detail::CodeSquashContext &ctx) const
	This function defines the analytical integral translation for the class.

virtual RooFit::OwningPtr< RooFitResult >	chi2FitTo (RooDataHist &data, const RooCmdArg &arg1={}, const RooCmdArg &arg2={}, const RooCmdArg &arg3={}, const RooCmdArg &arg4={}, const RooCmdArg &arg5={}, const RooCmdArg &arg6={}, const RooCmdArg &arg7={}, const RooCmdArg &arg8={})
	Perform a \( \chi^2 \) fit to given histogram.

virtual RooFit::OwningPtr< RooFitResult >	chi2FitTo (RooDataHist &data, const RooLinkedList &cmdList)
	Calls RooAbsReal::createChi2(RooDataSet& data, const RooLinkedList& cmdList) and returns fit result.

virtual RooFit::OwningPtr< RooFitResult >	chi2FitTo (RooDataSet &xydata, const RooCmdArg &arg1={}, const RooCmdArg &arg2={}, const RooCmdArg &arg3={}, const RooCmdArg &arg4={}, const RooCmdArg &arg5={}, const RooCmdArg &arg6={}, const RooCmdArg &arg7={}, const RooCmdArg &arg8={})
	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`.

virtual RooFit::OwningPtr< RooAbsReal >	createChi2 (RooDataHist &data, const RooCmdArg &arg1={}, const RooCmdArg &arg2={}, const RooCmdArg &arg3={}, const RooCmdArg &arg4={}, const RooCmdArg &arg5={}, const RooCmdArg &arg6={}, const RooCmdArg &arg7={}, const RooCmdArg &arg8={})
	Create a \( \chi^2 \) variable from a histogram and this function.

virtual RooFit::OwningPtr< RooAbsReal >	createChi2 (RooDataHist &data, const RooLinkedList &cmdList)

virtual RooFit::OwningPtr< RooAbsReal >	createChi2 (RooDataSet &data, const RooCmdArg &arg1={}, const RooCmdArg &arg2={}, const RooCmdArg &arg3={}, const RooCmdArg &arg4={}, const RooCmdArg &arg5={}, const RooCmdArg &arg6={}, const RooCmdArg &arg7={}, const RooCmdArg &arg8={})
	Create a \( \chi^2 \) from a series of x and y values stored in a dataset.

virtual RooFit::OwningPtr< 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&)

RooFit::OwningPtr< 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={}, const RooCmdArg &arg2={}, const RooCmdArg &arg3={}, const RooCmdArg &arg4={}, const RooCmdArg &arg5={}, const RooCmdArg &arg6={}, const RooCmdArg &arg7={}, const RooCmdArg &arg8={}) 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 listed in iset.

RooFit::OwningPtr< RooAbsReal >	createIntegral (const RooArgSet &iset, const RooCmdArg &arg1, const RooCmdArg &arg2={}, const RooCmdArg &arg3={}, const RooCmdArg &arg4={}, const RooCmdArg &arg5={}, const RooCmdArg &arg6={}, const RooCmdArg &arg7={}, const RooCmdArg &arg8={}) const
	Create an object that represents the integral of the function over one or more observables 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 RooFit::OwningPtr< 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={}, const RooCmdArg &arg3={}, const RooCmdArg &arg4={}, const RooCmdArg &arg5={}, const RooCmdArg &arg6={}, const RooCmdArg &arg7={}, const RooCmdArg &arg8={})
	Create an object that represents the running integral of the function over one or more observables 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.

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 bool	forceAnalyticalInt (const RooAbsArg &) const

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.

virtual Int_t	getAnalyticalIntegralWN (RooArgSet &allVars, RooArgSet &analVars, const RooArgSet normSet, const char rangeName=nullptr) const
	Variant of getAnalyticalIntegral that is also passed the normalization set that should be applied to the integrand of which the integral is requested.

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={}) const
	Propagates parameter uncertainties to an uncertainty estimate for this RooAbsReal.

TString	getTitle (bool appendUnit=false) const
	Return this variable's title 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 double	getValV (const RooArgSet *normalisationSet=nullptr) const
	Return value of object.

virtual void	gradient (double *) const

virtual bool	hasGradient () const

virtual bool	isBinnedDistribution (const RooArgSet &) const
	Tests if the distribution is binned. Unless overridden by derived classes, this always returns false.

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 *	plotOn (RooPlot *frame, const RooCmdArg &arg1={}, const RooCmdArg &arg2={}, const RooCmdArg &arg3={}, const RooCmdArg &arg4={}, const RooCmdArg &arg5={}, const RooCmdArg &arg6={}, const RooCmdArg &arg7={}, const RooCmdArg &arg8={}, const RooCmdArg &arg9={}, const RooCmdArg &arg10={}) const
	Plot (project) PDF on specified frame.

virtual RooPlot *	plotOn (RooPlot *frame, RooLinkedList &cmdList) const
	Internal back-end function of plotOn() with named arguments.

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	printValue (std::ostream &os) const override
	Print object value.

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)

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

virtual bool	canComputeBatchWithCuda () const

virtual bool	checkObservables (const RooArgSet *nset) const
	Overloadable function in which derived classes can implement consistency checks of the variables.

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.

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

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.

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 conjunction 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 expression 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	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 address of this RooAbsArg.

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

virtual void	translate (RooFit::Detail::CodeSquashContext &ctx) const
	This function defines a translation for each RooAbsReal based object that can be used to express the class as simple C++ code.

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.

virtual CacheMode	canNodeBeCached () const

virtual void	setCacheAndTrackHints (RooArgSet &)

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 (the base implementation is no-op).

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, void vp)
	Only called by placement new when throwing an exception.

void	operator delete[] (void *ptr)
	Operator delete [].

void	operator delete[] (void ptr, void vp)
	Only called by placement new[] when throwing an exception.

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 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 logging 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	isValidReal (double, bool) const override
	Interface function to check if given value is a valid value for this object. Returns true unless overridden.

bool	redirectServersHook (const RooAbsCollection &newServerList, bool mustReplaceAll, bool nameChange, bool isRecursive) override
	Propagate server change information to embedded RooFormula object.

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

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.

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 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.

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().

bool	matchArgsByName (const RooArgSet &allArgs, RooArgSet &matchedArgs, const TList &nameList) const
	Check if allArgs contains matching elements for each name in nameList.

virtual RooPlot *	plotAsymOn (RooPlot *frame, const RooAbsCategoryLValue &asymCat, PlotOpt o) const

virtual RooPlot *	plotOn (RooPlot *frame, PlotOpt o) const
	Plotting engine function for internal use.

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.

virtual void	selectNormalization (const RooArgSet *depSet=nullptr, bool force=false)
	Interface function to force use of a given set of observables to interpret function value.

virtual void	selectNormalizationRange (const char *rangeName=nullptr, bool force=false)
	Interface function to force use of a given normalization range to interpret function value.

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 ()

Private Member Functions
RooFormula &	getFormula () const
	Return reference to internal RooFormula object.

Private Attributes
RooListProxy	_actualVars
	Actual parameters used by formula engine.

TString	_formExpr
	Formula expression string.

RooFormula *	_formula = nullptr
	! Formula engine

RooArgSet *	_nset {nullptr}
	! Normalization set to be passed along to contents

Additional Inherited Members
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.

Protected Attributes inherited from RooAbsReal
bool	_forceNumInt = false
	Force numerical integration if flag set.

TString	_label
	Plot label for objects value.

RooFit::UniqueId< RooArgSet >::Value_t	_lastNormSetId = RooFit::UniqueId<RooArgSet>::nullval
	Component selection flag for RooAbsPdf::plotCompOn.

Int_t	_plotBins = 100
	Number of plot bins.

double	_plotMax = 0.0
	Maximum of plot range.

double	_plotMin = 0.0
	Minimum of plot range.

bool	_selectComp = true
	A buffer for reading values from trees.

std::unique_ptr< RooNumIntConfig >	_specIntegratorConfig

std::unique_ptr< TreeReadBuffer >	_treeReadBuffer

TString	_unit
	Unit for objects value.

double	_value = 0.0
	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 = false

RooExpensiveObjectCache *	_eocache {nullptr}
	Prohibit server redirects – Debugging tool.

bool	_fast = false

bool	_isConstant = false
	De-duplicated name pointer. This will be equal for all objects with the same name.

bool	_localNoInhibitDirty = false
	Cached isConstant status.

RooWorkspace *	_myws = nullptr
	Prevent 'AlwaysDirty' mode for this node.

const TNamed *	_namePtr = nullptr
	Pointer to global cache manager for any expensive components created by this object.

OperMode	_operMode = Auto

RooArgSet *	_ownedComponents = nullptr

bool	_prohibitServerRedirect = false
	Set of owned component.

RooRefArray	_proxyList

ProxyListCache	_proxyListCache

RefCountList_t	_serverList

bool	_shapeDirty = true

std::map< std::string, std::string >	_stringAttrib

bool	_valueDirty = true

Protected Attributes inherited from TNamed
TString	fName

TString	fTitle

Static Protected Attributes inherited from RooAbsReal
static Int_t	_evalErrorCount = 0

static std::map< const RooAbsArg *, std::pair< std::string, std::list< EvalError > > >	_evalErrorList

static ErrorLoggingMode	_evalErrorMode = RooAbsReal::PrintErrors

static bool	_globalSelectComp = false

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 <RooFormulaVar.h>

Inheritance diagram for RooFormulaVar:

[legend]

Constructor & Destructor Documentation

◆ RooFormulaVar() [1/4]

RooFormulaVar::RooFormulaVar ( )

Definition at line 65 of file RooFormulaVar.cxx.

◆ ~RooFormulaVar()

RooFormulaVar::~RooFormulaVar ( )

override

Definition at line 67 of file RooFormulaVar.cxx.

◆ RooFormulaVar() [2/4]

RooFormulaVar::RooFormulaVar	(	const char *	name,
		const char *	title,
		const char *	inFormula,
		const RooArgList &	dependents,
		bool	checkVariables = `true`
	)

Constructor with formula expression and list of input variables.

Parameters

[in]	name	Name of the formula.
[in]	title	Title of the formula.
[in]	inFormula	Expression to be evaluated.
[in]	dependents	Variables that should be passed to the formula.
[in]	checkVariables	Check that all variables from `dependents` are used in the expression.

Definition at line 79 of file RooFormulaVar.cxx.

◆ RooFormulaVar() [3/4]

RooFormulaVar::RooFormulaVar	(	const char *	name,
		const char *	title,
		const RooArgList &	dependents,
		bool	checkVariables = `true`
	)

Constructor with formula expression, title and list of input variables.

Parameters

[in]	name	Name of the formula.
[in]	title	Formula expression. Will also be used as the title.
[in]	dependents	Variables that should be passed to the formula.
[in]	checkVariables	Check that all variables from `dependents` are used in the expression.

Definition at line 102 of file RooFormulaVar.cxx.

◆ RooFormulaVar() [4/4]

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

Copy constructor.

Definition at line 122 of file RooFormulaVar.cxx.

Member Function Documentation

◆ binBoundaries()

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

overridevirtual

Forward the plot sampling hint from the p.d.f. that defines the observable obs.

Reimplemented from RooAbsReal.

Definition at line 237 of file RooFormulaVar.cxx.

◆ Class()

static TClass * RooFormulaVar::Class ( )

static

Returns: TClass describing this class

◆ Class_Name()

static const char * RooFormulaVar::Class_Name ( )

static

Returns: Name of this class

◆ Class_Version()

static constexpr Version_t RooFormulaVar::Class_Version ( )

inlinestaticconstexpr

Returns: Version of this class

Definition at line 92 of file RooFormulaVar.h.

◆ clone()

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

inlineoverridevirtual

Implements RooAbsArg.

Definition at line 38 of file RooFormulaVar.h.

◆ computeBatch()

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

overridevirtual

Base function for computing multiple values of a RooAbsReal.

Parameters

output	The array where the results are stored
nEvents	The number of events to be processed
dataMap	A std::map containing the input data for the computations

Reimplemented from RooAbsReal.

Definition at line 164 of file RooFormulaVar.cxx.

◆ DeclFileName()

static const char * RooFormulaVar::DeclFileName ( )

inlinestatic

Returns: Name of the file containing the class declaration

Definition at line 92 of file RooFormulaVar.h.

◆ defaultErrorLevel()

double RooFormulaVar::defaultErrorLevel ( ) const

overridevirtual

Return the default error level for MINUIT error analysis If the formula contains one or more RooNLLVars and no RooChi2Vars, return the defaultErrorLevel() of RooNLLVar.

If the addition contains one ore more RooChi2Vars and no RooNLLVars, return the defaultErrorLevel() of RooChi2Var. If the addition contains neither or both issue a warning message and return a value of 1

Reimplemented from RooAbsReal.

Definition at line 281 of file RooFormulaVar.cxx.

◆ dependents()

const RooArgList & RooFormulaVar::dependents ( ) const

inline

Definition at line 42 of file RooFormulaVar.h.

◆ dumpFormula()

void RooFormulaVar::dumpFormula ( )

Dump the formula to stdout.

Definition at line 152 of file RooFormulaVar.cxx.

◆ evaluate()

double RooFormulaVar::evaluate ( ) const

overridevirtual

Calculate current value of object from internal formula.

Implements RooAbsReal.

Definition at line 158 of file RooFormulaVar.cxx.

◆ expression()

const char * RooFormulaVar::expression ( ) const

inline

Definition at line 41 of file RooFormulaVar.h.

◆ getFormula()

RooFormula & RooFormulaVar::getFormula ( ) const

private

Return reference to internal RooFormula object.

If it doesn't exist, create it on the fly.

Definition at line 137 of file RooFormulaVar.cxx.

◆ getParameter() [1/2]

RooAbsArg * RooFormulaVar::getParameter ( const char * name ) const

inline

Return pointer to parameter with given name.

Definition at line 45 of file RooFormulaVar.h.

◆ getParameter() [2/2]

RooAbsArg * RooFormulaVar::getParameter ( Int_t index ) const

inline

Return pointer to parameter at given index.

Definition at line 49 of file RooFormulaVar.h.

◆ IsA()

TClass * RooFormulaVar::IsA ( ) const

inlineoverridevirtual

Returns: TClass describing current object

Reimplemented from RooAbsReal.

Definition at line 92 of file RooFormulaVar.h.

◆ isValidReal()

bool RooFormulaVar::isValidReal	(	double	,
		bool	printError
	)		const

inlineoverrideprotectedvirtual

Interface function to check if given value is a valid value for this object. Returns true unless overridden.

Reimplemented from RooAbsReal.

Definition at line 82 of file RooFormulaVar.h.

◆ nParameters()

size_t RooFormulaVar::nParameters ( ) const

inline

Return the number of parameters.

Definition at line 53 of file RooFormulaVar.h.

◆ ok()

bool RooFormulaVar::ok ( ) const

Definition at line 149 of file RooFormulaVar.cxx.

◆ plotSamplingHint()

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

overridevirtual

Forward the plot sampling hint from the p.d.f. that defines the observable obs.

Reimplemented from RooAbsReal.

Definition at line 256 of file RooFormulaVar.cxx.

◆ printMetaArgs()

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

overridevirtual

Add formula expression as meta argument in printing interface.

Reimplemented from RooAbsArg.

Definition at line 201 of file RooFormulaVar.cxx.

◆ printMultiline()

void RooFormulaVar::printMultiline	(	std::ostream &	os,
		Int_t	contents,
		bool	verbose = `false`,
		TString	indent = `""`
	)		const

overridevirtual

Print info about this object to the specified stream.

Reimplemented from RooAbsReal.

Definition at line 186 of file RooFormulaVar.cxx.

◆ readFromStream()

bool RooFormulaVar::readFromStream	(	std::istream &	is,
		bool	compact,
		bool	verbose = `false`
	)

overridevirtual

Read object contents from given stream.

Reimplemented from RooAbsReal.

Definition at line 212 of file RooFormulaVar.cxx.

◆ redirectServersHook()

bool RooFormulaVar::redirectServersHook	(	const RooAbsCollection &	newServerList,
		bool	mustReplaceAll,
		bool	nameChange,
		bool	isRecursive
	)

overrideprotectedvirtual

Propagate server change information to embedded RooFormula object.

Reimplemented from RooAbsReal.

Definition at line 173 of file RooFormulaVar.cxx.

◆ Streamer()

void RooFormulaVar::Streamer ( TBuffer & R__b )

overridevirtual

Stream an object of class TObject.

Reimplemented from RooAbsReal.

◆ StreamerNVirtual()

void RooFormulaVar::StreamerNVirtual ( TBuffer & ClassDef_StreamerNVirtual_b )

inline

Definition at line 92 of file RooFormulaVar.h.

◆ writeToStream()

void RooFormulaVar::writeToStream	(	std::ostream &	os,
		bool	compact
	)		const

overridevirtual

Write object contents to given stream.

Reimplemented from RooAbsReal.

Definition at line 223 of file RooFormulaVar.cxx.

Member Data Documentation

◆ _actualVars

RooListProxy RooFormulaVar::_actualVars

private

Actual parameters used by formula engine.

Definition at line 87 of file RooFormulaVar.h.

◆ _formExpr

TString RooFormulaVar::_formExpr

private

Formula expression string.

Definition at line 90 of file RooFormulaVar.h.

◆ _formula

RooFormula* RooFormulaVar::_formula = nullptr

mutableprivate

! Formula engine

Definition at line 88 of file RooFormulaVar.h.

◆ _nset

RooArgSet* RooFormulaVar::_nset {nullptr}

mutableprivate

! Normalization set to be passed along to contents

Definition at line 89 of file RooFormulaVar.h.

Libraries for RooFormulaVar:

[legend]

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

roofit/roofitcore/inc/RooFormulaVar.h
roofit/roofitcore/src/RooFormulaVar.cxx

Public Member Functions

Static Public Member Functions

Protected Member Functions

Private Member Functions

Private Attributes

Additional Inherited Members

Constructor & Destructor Documentation

◆ RooFormulaVar() [1/4]

◆ ~RooFormulaVar()

◆ RooFormulaVar() [2/4]

◆ RooFormulaVar() [3/4]

◆ RooFormulaVar() [4/4]

Member Function Documentation

◆ binBoundaries()

◆ Class()

◆ Class_Name()

◆ Class_Version()

◆ clone()

◆ computeBatch()

◆ DeclFileName()

◆ defaultErrorLevel()

◆ dependents()

◆ dumpFormula()

◆ evaluate()

◆ expression()

◆ getFormula()

◆ getParameter() [1/2]

◆ getParameter() [2/2]

◆ IsA()

◆ isValidReal()

◆ nParameters()

◆ ok()

◆ plotSamplingHint()

◆ printMetaArgs()

◆ printMultiline()

◆ readFromStream()

◆ redirectServersHook()

◆ Streamer()

◆ StreamerNVirtual()

◆ writeToStream()

Member Data Documentation

◆ _actualVars

◆ _formExpr

◆ _formula

◆ _nset