RooChi2Var Class Reference

RooChi2Var implements a simple \( \chi^2 \) calculation from a binned dataset and a PDF.

It calculates

\begin{align*} \chi^2 &= \sum_{\mathrm{bins}} \left( \frac{N_\mathrm{PDF,bin} - N_\mathrm{Data,bin}}{\Delta_\mathrm{bin}} \right)^2 \\ N_\mathrm{PDF,bin} &= \begin{cases} \mathrm{pdf}(\text{bin centre}) \cdot V_\mathrm{bin} \cdot N_\mathrm{Data,tot} &\text{normal PDF}\\ \mathrm{pdf}(\text{bin centre}) \cdot V_\mathrm{bin} \cdot N_\mathrm{Data,expected} &\text{extended PDF} \end{cases} \\ \Delta_\mathrm{bin} &= \begin{cases} \sqrt{N_\mathrm{PDF,bin}} &\text{if } \mathtt{DataError == RooAbsData::Expected}\\ \mathtt{data{\rightarrow}weightError()} &\text{otherwise} \\ \end{cases} \end{align*}

If the dataset doesn't have user-defined errors, errors are assumed to be \( \sqrt{N} \). In extended PDF mode, N_tot (total number of data events) is substituted with N_expected, the expected number of events that the PDF predicts.

Note

If data errors are used, empty bins will prevent the calculation of \( \chi^2 \), because those have zero error. This leads to messages like:

[#0] ERROR:Eval -- RooChi2Var::RooChi2Var(chi2_GenPdf_data_hist) INFINITY ERROR: bin 2 has zero error

In this case, one can use the expected errors of the PDF instead of the data errors:

RooChi2Var chi2(..., ..., RooFit::DataError(RooAbsData::Expected), ...);

Definition at line 25 of file RooChi2Var.h.

Public Types
enum	FuncMode { Function , Pdf , ExtendedPdf }
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 = BIT(0) , kOverwrite = BIT(1) , kWriteDelete = BIT(2) }
enum	EDeprecatedStatusBits { kObjInCanvas = BIT(3) }
enum	EStatusBits {   kCanDelete = BIT(0) , kMustCleanup = BIT(3) , kIsReferenced = BIT(4) , kHasUUID = BIT(5) ,   kCannotPick = BIT(6) , kNoContextMenu = BIT(8) , kInvalidObject = BIT(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 }

Public Member Functions
	RooChi2Var (const char *name, const char *title, RooAbsPdf &pdf, RooDataHist &data, Bool_t extended=kFALSE, const char *rangeName=0, const char *addCoefRangeName=0, Int_t nCPU=1, RooFit::MPSplit interleave=RooFit::BulkPartition, Bool_t verbose=kTRUE, Bool_t splitCutRange=kTRUE, RooDataHist::ErrorType=RooDataHist::SumW2)
	Constructor of a chi2 for given p.d.f.
	RooChi2Var (const char *name, const char *title, RooAbsPdf &pdf, RooDataHist &data, 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 RooCmdArg &arg9=RooCmdArg::none())
	RooChi2Var constructor.
	RooChi2Var (const char *name, const char *title, RooAbsReal &func, RooDataHist &data, const RooArgSet &projDeps, FuncMode funcMode, const char *rangeName=0, const char *addCoefRangeName=0, Int_t nCPU=1, RooFit::MPSplit interleave=RooFit::BulkPartition, Bool_t verbose=kTRUE, Bool_t splitCutRange=kTRUE, RooDataHist::ErrorType=RooDataHist::SumW2)
	Constructor of a chi2 for given p.d.f.
	RooChi2Var (const char *name, const char *title, RooAbsReal &func, RooDataHist &data, 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 RooCmdArg &arg9=RooCmdArg::none())
	RooChi2Var constructor.
	RooChi2Var (const RooChi2Var &other, const char *name=0)
	Copy constructor.
virtual	~RooChi2Var ()
	Destructor.
virtual TObject *	clone (const char *newname) const
virtual RooAbsTestStatistic *	create (const char *name, const char *title, RooAbsReal &pdf, RooAbsData &dhist, const RooArgSet &projDeps, const char *rangeName=0, const char *addCoefRangeName=0, Int_t nCPU=1, RooFit::MPSplit interleave=RooFit::BulkPartition, Bool_t verbose=kTRUE, Bool_t splitCutRange=kTRUE, Bool_t=kFALSE)
virtual Double_t	defaultErrorLevel () const
Public Member Functions inherited from RooAbsOptTestStatistic
	RooAbsOptTestStatistic ()
	Default Constructor.
	RooAbsOptTestStatistic (const char *name, const char *title, RooAbsReal &real, RooAbsData &data, const RooArgSet &projDeps, const char *rangeName=0, const char *addCoefRangeName=0, Int_t nCPU=1, RooFit::MPSplit interleave=RooFit::BulkPartition, Bool_t verbose=kTRUE, Bool_t splitCutRange=kFALSE, Bool_t cloneInputData=true, double integrateOverBinsPrecision=-1.)
	Create a test statistic, and optimise its calculation.
	RooAbsOptTestStatistic (const RooAbsOptTestStatistic &other, const char *name=0)
	Copy constructor.
virtual	~RooAbsOptTestStatistic ()
	Destructor.
virtual const char *	cacheUniqueSuffix () const
virtual Double_t	combinedValue (RooAbsReal **gofArray, Int_t nVal) const
	Method to combined test statistic results calculated into partitions into the global result.
RooAbsData &	data ()
const RooAbsData &	data () const
RooAbsReal &	function ()
const RooAbsReal &	function () const
virtual Bool_t	isDerived () const
	Does value or shape of this arg depend on any other arg?
Bool_t	isSealed () const
void	seal (const char *notice="")
const char *	sealNotice () const
Public Member Functions inherited from RooAbsTestStatistic
	RooAbsTestStatistic ()
	Default constructor.
	RooAbsTestStatistic (const char *name, const char *title, RooAbsReal &real, RooAbsData &data, const RooArgSet &projDeps, const char *rangeName=0, const char *addCoefRangeName=0, Int_t nCPU=1, RooFit::MPSplit interleave=RooFit::BulkPartition, Bool_t verbose=kTRUE, Bool_t splitCutRange=kTRUE)
	Create a test statistic from the given function and the data.
	RooAbsTestStatistic (const RooAbsTestStatistic &other, const char *name=0)
	Copy constructor.
virtual	~RooAbsTestStatistic ()
	Destructor.
void	enableOffsetting (Bool_t flag)
virtual Double_t	globalNormalization () const
Bool_t	isOffsetting () const
virtual Double_t	offset () const
virtual Double_t	offsetCarry () const
Bool_t	setData (RooAbsData &data, Bool_t cloneData=kTRUE)
	Change dataset that is used to given one.
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_t minVal, Double_t maxVal, const char *unit="")
	Constructor with plot range and unit label.
	RooAbsReal (const RooAbsReal &other, const char *name=0)
	Copy constructor.
virtual	~RooAbsReal ()
	Destructor.
virtual Double_t	analyticalIntegral (Int_t code, const char *rangeName=0) const
	Implements the actual analytical integral(s) advertised by getAnalyticalIntegral.
virtual Double_t	analyticalIntegralWN (Int_t code, const RooArgSet *normSet, const char *rangeName=0) 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.
virtual std::list< Double_t > *	binBoundaries (RooAbsRealLValue &obs, Double_t xlo, Double_t xhi) const
	Retrieve bin boundaries if this distribution is binned in obs.
RooAbsFunc *	bindVars (const RooArgSet &vars, const RooArgSet *nset=0, Bool_t clipInvalid=kFALSE) const
	Create an interface adaptor f(vars) that binds us to the specified variables (in arbitrary order).
virtual 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 RooFitResult *	chi2FitTo (RooDataHist &data, const RooLinkedList &cmdList)
	Perform a \( \chi^2 \) fit to given histogram.
virtual 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 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 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.
virtual RooAbsReal *	createChi2 (RooDataHist &data, const RooLinkedList &cmdList)
	Create a \( \chi^2 \) variable from a histogram and this function.
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&)
RooAbsArg *	createFundamental (const char *newname=0) const
	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 (const char *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.
RooAbsReal *	createIntegral (const RooArgSet &iset, const char *rangeName) const
	Create integral over observables in iset in range named rangeName.
RooAbsReal *	createIntegral (const RooArgSet &iset, const RooArgSet &nset, const char *rangeName=0) const
	Create integral over observables in iset in range named rangeName with integrand normalized over observables in nset.
RooAbsReal *	createIntegral (const RooArgSet &iset, const RooArgSet &nset, const RooNumIntConfig &cfg, const char *rangeName=0) 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 RooAbsReal *	createIntegral (const RooArgSet &iset, const RooArgSet *nset=0, const RooNumIntConfig *cfg=0, const char *rangeName=0) const
	Create an object that represents the integral of the function over one or more observables listed in iset.
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 listed in iset.
RooAbsReal *	createIntegral (const RooArgSet &iset, const RooNumIntConfig &cfg, const char *rangeName=0) const
	Create integral over observables in iset in range named rangeName using specified configuration for any numeric integration.
RooAbsReal *	createIntRI (const RooArgSet &iset, const RooArgSet &nset=RooArgSet())
	Utility function for createRunningIntegral.
const RooAbsReal *	createPlotProjection (const RooArgSet &dependentVars, const RooArgSet *projectedVars, RooArgSet *&cloneSet, const char *rangeName=0, const RooArgSet *condObs=0) 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) 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.
RooAbsReal *	createRunningIntegral (const RooArgSet &iset, const RooArgSet &nset=RooArgSet())
	Calls createRunningIntegral(const RooArgSet&, const RooCmdArg&, const RooCmdArg&, const RooCmdArg&, const RooCmdArg&, const RooCmdArg&, const RooCmdArg&, const RooCmdArg&, const RooCmdArg&)
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 listed in iset, i.e.
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_t eps=0.001)
	Return function representing first, second or third order derivative of this function.
RooDerivative *	derivative (RooRealVar &obs, Int_t order=1, Double_t eps=0.001)
	Return function representing first, second or third order derivative of this function.
RooDataHist *	fillDataHist (RooDataHist *hist, const RooArgSet *nset, Double_t scaleFactor, Bool_t correctForBinVolume=kFALSE, Bool_t showProgress=kFALSE) const
	Fill a RooDataHist with values sampled from this function at the bin centers.
TH1 *	fillHistogram (TH1 *hist, const RooArgList &plotVars, Double_t scaleFactor=1, const RooArgSet *projectedVars=0, Bool_t scaling=kTRUE, const RooArgSet *condObs=0, Bool_t setError=kTRUE) const
	Fill the ROOT histogram 'hist' with values sampled from this function at the bin centers.
Double_t	findRoot (RooRealVar &x, Double_t xmin, Double_t xmax, Double_t yval)
	Return value of x (in range xmin,xmax) at which function equals yval.
virtual void	fixAddCoefNormalization (const RooArgSet &addNormSet=RooArgSet(), Bool_t force=kTRUE)
	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=0, Bool_t force=kTRUE)
	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_t	forceAnalyticalInt (const RooAbsArg &) const
virtual void	forceNumInt (Bool_t flag=kTRUE)
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=0) 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=0) 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_t	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_t	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_t appendUnit=kFALSE) const
	Return this variable's title string.
const Text_t *	getUnit () const
Double_t	getVal (const RooArgSet &normalisationSet) const
	Like getVal(const RooArgSet*), but always requires an argument for normalisation.
Double_t	getVal (const RooArgSet *normalisationSet=nullptr) const
	Evaluate object.
virtual RooSpan< const double >	getValBatch (std::size_t, std::size_t, const RooArgSet *=nullptr)=delete
virtual RooSpan< const double >	getValues (RooBatchCompute::RunContext &evalData, const RooArgSet *normSet=nullptr) const
	by this change, please consult the release notes for ROOT 6.24 for guidance on how to make this transition.
virtual Double_t	getValV (const RooArgSet *normalisationSet=nullptr) const
	Return value of object.
RooMultiGenFunction *	iGenFunction (const RooArgSet &observables, const RooArgSet &nset=RooArgSet())
RooGenFunction *	iGenFunction (RooRealVar &x, const RooArgSet &nset=RooArgSet())
virtual Bool_t	isBinnedDistribution (const RooArgSet &) const
	Tests if the distribution is binned. Unless overridden by derived classes, this always returns false.
virtual Bool_t	isIdentical (const RooAbsArg &other, Bool_t assumeSameType=kFALSE) const
void	logEvalError (const char *message, const char *serverValueString=0) const
	Log evaluation error message.
virtual Double_t	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_t central, Bool_t takeRoot, Bool_t 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_t central, Bool_t takeRoot)
	Return function representing moment of function of given order.
RooAbsReal &	operator= (const RooAbsReal &other)
	Assign values, name and configs from another RooAbsReal.
virtual Bool_t	operator== (const RooAbsArg &other) const
	Equality operator when comparing to another RooAbsArg.
Bool_t	operator== (Double_t value) const
	Equality operator comparing to a Double_t.
virtual RooPlot *	plotOn (RooPlot *frame, const RooCmdArg &arg1=RooCmdArg(), const RooCmdArg &arg2=RooCmdArg(), const RooCmdArg &arg3=RooCmdArg(), const RooCmdArg &arg4=RooCmdArg(), const RooCmdArg &arg5=RooCmdArg(), const RooCmdArg &arg6=RooCmdArg(), const RooCmdArg &arg7=RooCmdArg(), const RooCmdArg &arg8=RooCmdArg(), const RooCmdArg &arg9=RooCmdArg(), const RooCmdArg &arg10=RooCmdArg()) 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 std::list< Double_t > *	plotSamplingHint (RooAbsRealLValue &obs, Double_t xlo, Double_t xhi) const
	Interface for returning an optional hint for initial sampling points when constructing a curve projected on observable obs.
virtual RooPlot *	plotSliceOn (RooPlot *frame, const RooArgSet &sliceSet, Option_t *drawOptions="L", Double_t scaleFactor=1.0, ScaleType stype=Relative, const RooAbsData *projData=0) 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.
virtual void	printMultiline (std::ostream &os, Int_t contents, Bool_t verbose=kFALSE, TString indent="") const
	Structure printing.
virtual void	printValue (std::ostream &os) const
	Print object value.
virtual Bool_t	readFromStream (std::istream &is, Bool_t compact, Bool_t verbose=kFALSE)
	Read object contents from stream (dummy for now)
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_t createOnTheFly)
	Returns the specialized integrator configuration for this RooAbsReal.
virtual void	writeToStream (std::ostream &os, Bool_t compact) const
	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=0)
	Copy constructor transfers all boolean and string properties of the original object.
virtual	~RooAbsArg ()
	Destructor.
Bool_t	addOwnedComponents (const RooArgSet &comps)
	Take ownership of the contents of 'comps'.
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_t	checkObservables (const RooArgSet *nset) const
	Overloadable function in which derived classes can implement consistency checks of the variables.
virtual TObject *	Clone (const char *newname=0) const
	Make a clone of an object using the Streamer facility.
virtual RooAbsArg *	cloneTree (const char *newname=0) const
	Clone tree expression of objects.
Int_t	Compare (const TObject *other) const
	Utility function used by TCollection::Sort to compare contained TObjects We implement comparison by name, resulting in alphabetical sorting by object name.
virtual Int_t	defaultPrintContents (Option_t *opt) const
	Define default contents to print.
Bool_t	dependsOn (const RooAbsArg &server, const RooAbsArg *ignoreArg=0, Bool_t valueOnly=kFALSE) const
	Test whether we depend on (ie, are served by) the specified object.
Bool_t	dependsOn (const RooAbsCollection &serverList, const RooAbsArg *ignoreArg=0, Bool_t valueOnly=kFALSE) const
	Test whether we depend on (ie, are served by) any object in the specified collection.
Bool_t	dependsOnValue (const RooAbsArg &server, const RooAbsArg *ignoreArg=0) const
	Check whether this object depends on values served from the object passed as server.
Bool_t	dependsOnValue (const RooAbsCollection &serverList, const RooAbsArg *ignoreArg=0) const
	Check whether this object depends on values from an element in the serverList.
Bool_t	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.
RooArgSet *	getComponents () const
	Create a RooArgSet with all components (branch nodes) of the expression tree headed by this object.
RooArgSet *	getObservables (const RooAbsData &data) const
	Return the observables of this pdf given the observables defined by data.
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).
RooArgSet *	getObservables (const RooArgSet &set, Bool_t valueOnly=kTRUE) const
	Given a set of possible observables, return the observables that this PDF depends on.
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.
bool	getObservables (const RooArgSet *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.
RooArgSet *	getParameters (const RooAbsData &data, bool stripDisconnected=true) const
	Return the parameters of this p.d.f when used in conjuction with dataset 'data'.
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).
RooArgSet *	getParameters (const RooArgSet &observables, bool stripDisconnected=true) const
	Return the parameters of the p.d.f given the provided set of observables.
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_t	getTransientAttribute (const Text_t *name) const
	Check if a named attribute is set.
RooArgSet *	getVariables (Bool_t stripDisconnected=kTRUE) 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_t	hasClients () const
virtual Bool_t	hasRange (const char *) const
virtual Bool_t	importWorkspaceHook (RooWorkspace &ws)
virtual Bool_t	inRange (const char *) const
Bool_t	isCloneOf (const RooAbsArg &other) const
	Check if this object was created as a clone of 'other'.
Bool_t	isConstant () const
	Check if the "Constant" attribute is set.
virtual Bool_t	IsSortable () const
Bool_t	localNoDirtyInhibit () const
const TNamed *	namePtr () const
Int_t	numProxies () const
	Return the number of registered proxies.
Bool_t	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_t	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)
	Assign all boolean and string properties of the original object.
Bool_t	overlaps (const RooAbsArg &testArg, Bool_t valueOnly=kFALSE) const
	Test if any of the nodes of tree are shared with that of the given tree.
const RooArgSet *	ownedComponents () const
virtual void	Print (Option_t *options=0) const
	Print the object to the defaultPrintStream().
virtual void	printAddress (std::ostream &os) const
	Print class name of object.
virtual void	printArgs (std::ostream &os) const
	Print object arguments, ie its proxies.
virtual void	printClassName (std::ostream &os) const
	Print object class name.
void	printCompactTree (const char *indent="", const char *fileName=0, const char *namePat=0, RooAbsArg *client=0)
	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=0, RooAbsArg *client=0)
	Print tree structure of expression tree on given ostream.
void	printComponentTree (const char *indent="", const char *namePat=0, Int_t nLevel=999)
	Print tree structure of expression tree on given ostream, only branch nodes are printed.
void	printDirty (Bool_t depth=kTRUE) const
	Print information about current value dirty state information.
virtual void	printMetaArgs (std::ostream &) const
virtual void	printName (std::ostream &os) const
	Print object name.
virtual void	printTitle (std::ostream &os) const
	Print object title.
virtual void	printTree (std::ostream &os, TString indent="") const
	Print object tree structure.
Bool_t	recursiveCheckObservables (const RooArgSet *nset) const
	Recursively call checkObservables on all nodes in the expression tree.
void	setAttribute (const Text_t *name, Bool_t value=kTRUE)
	Set (default) or clear a named boolean attribute of this object.
void	setLocalNoDirtyInhibit (Bool_t flag) const
void	SetName (const char *name)
	Set the name of the TNamed.
void	SetNameTitle (const char *name, const char *title)
	Set all the TNamed parameters (name and title).
void	setProhibitServerRedirect (Bool_t 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_t value=kTRUE)
	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
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
RooArgSet *	getDependents (const RooArgSet &set) const
RooArgSet *	getDependents (const RooAbsData *set) const
RooArgSet *	getDependents (const RooArgSet *depList) const
Bool_t	dependentOverlaps (const RooAbsData *dset, const RooAbsArg &testArg) const
Bool_t	dependentOverlaps (const RooArgSet *depList, const RooAbsArg &testArg) const
Bool_t	checkDependents (const RooArgSet *nset) const
Bool_t	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_t	isValueServer (const RooAbsArg &arg) const
	Check if this is serving values to arg.
Bool_t	isValueServer (const char *name) const
	Check if this is serving values to an object with name name.
Bool_t	isShapeServer (const RooAbsArg &arg) const
	Check if this is serving shape to arg.
Bool_t	isShapeServer (const char *name) const
	Check if this is serving shape to an object with name name.
void	leafNodeServerList (RooAbsCollection *list, const RooAbsArg *arg=0, Bool_t recurseNonDerived=kFALSE) 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=0, Bool_t recurseNonDerived=kFALSE) 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=0, Bool_t doBranch=kTRUE, Bool_t doLeaf=kTRUE, Bool_t valueOnly=kFALSE, Bool_t recurseNonDerived=kFALSE) const
	Fill supplied list with nodes of the arg tree, following all server links, starting with ourself as top node.
virtual Bool_t	isFundamental () const
	Is this object a fundamental type that can be added to a dataset? Fundamental-type subclasses override this method to return kTRUE.
virtual Bool_t	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_t	redirectServers (const RooAbsCollection &newServerList, Bool_t mustReplaceAll=kFALSE, Bool_t nameChange=kFALSE, Bool_t isRecursionStep=kFALSE)
	Replace all direct servers of this object with the new servers in newServerList.
Bool_t	recursiveRedirectServers (const RooAbsCollection &newServerList, Bool_t mustReplaceAll=kFALSE, Bool_t nameChange=kFALSE, Bool_t recurseInNewSet=kTRUE)
	Recursively replace all servers with the new servers in newSet.
virtual void	serverNameChangeHook (const RooAbsArg *, const RooAbsArg *)
void	addServer (RooAbsArg &server, Bool_t valueProp=kTRUE, Bool_t shapeProp=kFALSE, 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_t valueProp=kTRUE, Bool_t shapeProp=kFALSE)
	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_t valueProp, Bool_t shapeProp)
	Replace 'oldServer' with 'newServer'.
void	changeServer (RooAbsArg &server, Bool_t valueProp, Bool_t shapeProp)
	Change dirty flag propagation mask for specified server.
void	removeServer (RooAbsArg &server, Bool_t force=kFALSE)
	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_t 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_t	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_t	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 CacheMode	canNodeBeCached () const
virtual void	setCacheAndTrackHints (RooArgSet &)
Bool_t	isShapeDirty () const
Bool_t	isValueDirty () const
Bool_t	isValueDirtyAndClear () const
Bool_t	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_t recurseADirty=kTRUE)
	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
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.
virtual void	Clear (Option_t *option="")
	Set name and title to empty strings ("").
virtual void	Copy (TObject &named) const
	Copy this to obj.
virtual void	FillBuffer (char *&buffer)
	Encode TNamed into output buffer.
virtual const char *	GetName () const
	Returns name of object.
virtual const char *	GetTitle () const
	Returns title of object.
virtual ULong_t	Hash () const
	Return hash value for this object.
virtual void	ls (Option_t *option="") const
	List TNamed name and title.
TNamed &	operator= (const TNamed &rhs)
	TNamed assignment operator.
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.
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 for instance with: gROOT->SetSelectedPad(gPad).
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=0)
	Execute method on this object with the given parameter string, e.g.
virtual void	Execute (TMethod *method, TObjArray *params, Int_t *error=0)
	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)
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.
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=0, Int_t option=0, Int_t bufsize=0)
	Write this object to the current directory.
virtual Int_t	Write (const char *name=0, 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'.

Protected Member Functions
virtual Double_t	evaluatePartition (std::size_t firstEvent, std::size_t lastEvent, std::size_t stepSize) const
	Calculate chi^2 in partition from firstEvent to lastEvent using given stepSize.
Protected Member Functions inherited from RooAbsOptTestStatistic
virtual Bool_t	allowFunctionCache ()
void	constOptimizeTestStatistic (ConstOpCode opcode, Bool_t doAlsoTrackingOpt=kTRUE)
	Driver function to propagate constant term optimizations in test statistic.
void	initSlave (RooAbsReal &real, RooAbsData &indata, const RooArgSet &projDeps, const char *rangeName, const char *addCoefRangeName)
void	optimizeCaching ()
	This method changes the value caching logic for all nodes that depends on any of the observables as defined by the given dataset.
void	optimizeConstantTerms (Bool_t, Bool_t=kTRUE)
	Driver function to activate global constant term optimization.
virtual void	printCompactTreeHook (std::ostream &os, const char *indent="")
	Catch print hook function and forward to function clone.
virtual Bool_t	redirectServersHook (const RooAbsCollection &newServerList, Bool_t mustReplaceAll, Bool_t nameChange, Bool_t isRecursive)
	Catch server redirect calls and forward to internal clone of function.
virtual RooArgSet	requiredExtraObservables () const
Bool_t	setDataSlave (RooAbsData &data, Bool_t cloneData=kTRUE, Bool_t ownNewDataAnyway=kFALSE)
	Change dataset that is used to given one.
Protected Member Functions inherited from RooAbsTestStatistic
virtual Double_t	evaluate () const
	Calculate and return value of test statistic.
virtual Double_t	getCarry () const
Bool_t	initialize ()
	One-time initialization of the test statistic.
void	initMPMode (RooAbsReal *real, RooAbsData *data, const RooArgSet *projDeps, const char *rangeName, const char *addCoefRangeName)
	Initialize multi-processor calculation mode.
void	initSimMode (RooSimultaneous *pdf, RooAbsData *data, const RooArgSet *projDeps, const char *rangeName, const char *addCoefRangeName)
	Initialize simultaneous p.d.f processing mode.
Int_t	numSets () const
GOFOpMode	operMode () const
virtual Bool_t	processEmptyDataSets () const
void	setEventCount (Int_t nEvents)
void	setMPSet (Int_t setNum, Int_t numSets)
	Set MultiProcessor set number identification of this instance.
Int_t	setNum () const
void	setSimCount (Int_t simCount)
Protected Member Functions inherited from RooAbsReal
virtual void	attachToTree (TTree &t, Int_t bufSize=32000)
	Attach object to a branch of given TTree.
virtual void	attachToVStore (RooVectorDataStore &vstore)
RooFitResult *	chi2FitDriver (RooAbsReal &fcn, RooLinkedList &cmdList)
	Internal driver function for chi2 fits.
virtual void	copyCache (const RooAbsArg *source, Bool_t valueOnly=kFALSE, Bool_t setValDirty=kTRUE)
	Copy the cached value of another RooAbsArg to our cache.
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.
virtual void	fillTreeBranch (TTree &t)
	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=0, const char *rangeName=0, Bool_t omitEmpty=kFALSE) const
	Construct string with unique suffix name to give to integral object that encodes integrated observables, normalization observables and the integration range name.
Bool_t	isSelectedComp () const
	If true, the current pdf is a selected component (for use in plotting)
virtual Bool_t	isValid () const
	Check if current value is valid.
virtual Bool_t	isValidReal (Double_t value, Bool_t printError=kFALSE) const
	Interface function to check if given value is a valid value for this object.
void	makeProjectionSet (const RooAbsArg *plotVar, const RooArgSet *allVars, RooArgSet &projectedVars, Bool_t silent) const
	Utility function for plotOn() that constructs the set of observables to project when plotting ourselves as function of 'plotVar'.
Bool_t	matchArgs (const RooArgSet &allDeps, RooArgSet &numDeps, const RooArgProxy &a) const
	Utility function for use in getAnalyticalIntegral().
Bool_t	matchArgs (const RooArgSet &allDeps, RooArgSet &numDeps, const RooArgProxy &a, const RooArgProxy &b) const
	Utility function for use in getAnalyticalIntegral().
Bool_t	matchArgs (const RooArgSet &allDeps, RooArgSet &numDeps, const RooArgProxy &a, const RooArgProxy &b, const RooArgProxy &c) const
	Utility function for use in getAnalyticalIntegral().
Bool_t	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_t	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
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_t Z, const RooArgSet *params, const RooLinkedList &argList, Bool_t method1) const
	Plot function or PDF on frame with support for visualization of the uncertainty encoded in the given fit result fr.
Bool_t	plotSanityChecks (RooPlot *frame) const
	Utility function for plotOn(), perform general sanity check on frame to ensure safe plotting operations.
void	selectComp (Bool_t flag)
virtual void	selectNormalization (const RooArgSet *depSet=0, Bool_t force=kFALSE)
	Interface function to force use of a given set of observables to interpret function value.
virtual void	selectNormalizationRange (const char *rangeName=0, Bool_t force=kFALSE)
	Interface function to force use of a given normalization range to interpret function value.
virtual void	setTreeBranchStatus (TTree &t, Bool_t active)
	(De)Activate associated tree branch
virtual void	syncCache (const RooArgSet *set=0)
Double_t	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_t) 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_t	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
RooDataHist::ErrorType	_etype
FuncMode	_funcMode
Protected Attributes inherited from RooAbsOptTestStatistic
RooArgSet	_cachedNodes
RooAbsData *	_dataClone {nullptr}
RooAbsReal *	_funcClone
RooArgSet *	_funcCloneSet
RooArgSet *	_funcObsSet
double	_integrateBinsPrecision {-1.}
RooArgSet *	_normSet
Bool_t	_optimized
RooAbsData *	_origData
RooAbsReal *	_origFunc
	List of nodes that are cached as constant expressions.
Bool_t	_ownData
RooArgSet *	_projDeps
Bool_t	_sealed
TString	_sealNotice
Protected Attributes inherited from RooAbsTestStatistic
std::string	_addCoefRangeName
RooAbsData *	_data
Bool_t	_doOffset
Double_t	_evalCarry
	avoids loss of precision
Int_t	_extSet
RooAbsReal *	_func
pRooAbsTestStatistic *	_gofArray
GOFOpMode	_gofOpMode
	Is object initialized
std::vector< RooFit::MPSplit >	_gofSplitMode
	Array of sub-contexts representing part of the combined test statistic.
Bool_t	_init
pRooRealMPFE *	_mpfeArray
RooFit::MPSplit	_mpinterl
	Array of parallel execution frond ends.
Int_t	_nCPU
	GOF MP Split mode specified by component (when Auto is active)
Int_t	_nEvents
Int_t	_nGof
	Number of designated set to calculated extended term.
Int_t	_numSets
Double_t	_offset
Double_t	_offsetCarry
	Offset.
RooSetProxy	_paramSet
const RooArgSet *	_projDeps
std::string	_rangeName
Int_t	_setNum
Int_t	_simCount
Bool_t	_splitRange
Bool_t	_verbose
Protected Attributes inherited from RooAbsReal
Bool_t	_forceNumInt
TString	_label
RooArgSet *	_lastNSet
Int_t	_plotBins
Double_t	_plotMax
Double_t	_plotMin
Bool_t	_selectComp
RooNumIntConfig *	_specIntegratorConfig
TString	_unit
Double_t	_value
Protected Attributes inherited from RooAbsArg
bool	_allBatchesDirty {true}
std::set< std::string >	_boolAttrib
std::set< std::string >	_boolAttribTransient
std::deque< RooAbsCache * >	_cacheList
RefCountList_t	_clientList
RefCountList_t	_clientListShape
RefCountList_t	_clientListValue
Bool_t	_deleteWatch
RooExpensiveObjectCache *	_eocache {nullptr}
	Prohibit server redirects – Debugging tool.
Bool_t	_fast
Bool_t	_isConstant
	Do not persist. Pointer to global instance of string that matches object named.
Bool_t	_localNoInhibitDirty
	Cached isConstant status.
RooWorkspace *	_myws
	Prevent 'AlwaysDirty' mode for this node.
TNamed *	_namePtr
OperMode	_operMode
	Mark batches as dirty (only meaningful for RooAbsReal).
RooArgSet *	_ownedComponents
Bool_t	_prohibitServerRedirect
	Set of owned component.
RooRefArray	_proxyList
RefCountList_t	_serverList
Bool_t	_shapeDirty
std::map< std::string, std::string >	_stringAttrib
Bool_t	_valueDirty
Protected Attributes inherited from TNamed
TString	fName
TString	fTitle

Static Protected Attributes
static RooArgSet	_emptySet
Static Protected Attributes inherited from RooAbsReal
static Bool_t	_globalSelectComp = false
	Component selection flag for RooAbsPdf::plotCompOn.
static Bool_t	_hideOffset = kTRUE
Static Protected Attributes inherited from RooAbsArg
static Bool_t	_inhibitDirty
static Bool_t	_verboseDirty
Static Protected Attributes inherited from RooPrintable
static Int_t	_nameLength

Additional Inherited Members
Static Public Member Functions inherited from RooAbsReal
static void	clearEvalErrorLog ()
	Clear the stack of evaluation error messages.
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_t	hideOffset ()
static void	logEvalError (const RooAbsReal *originator, const char *origName, const char *message, const char *serverValueString=0)
	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	setCacheCheck (Bool_t flag)
static void	setEvalErrorLoggingMode (ErrorLoggingMode m)
	Set evaluation error logging mode.
static void	setHideOffset (Bool_t flag)
Static Public Member Functions inherited from RooAbsArg
static void	setDirtyInhibit (Bool_t flag)
	Control global dirty inhibit mode.
static void	verboseDirty (Bool_t flag)
	Activate verbose messaging related to dirty flag propagation.
Static Public Member Functions inherited from TObject
static Long_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 std::ostream &	defaultPrintStream (std::ostream *os=0)
	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 Types inherited from RooAbsTestStatistic
enum	GOFOpMode { SimMaster , MPMaster , Slave }
Protected Types inherited from TObject
enum	{ kOnlyPrepStep = BIT(3) }
Static Protected Member Functions inherited from RooAbsReal
static void	globalSelectComp (Bool_t 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.

#include <RooChi2Var.h>

Inheritance diagram for RooChi2Var:

Member Enumeration Documentation

FuncMode

enum RooChi2Var::FuncMode

Enumerator
Function
Pdf
ExtendedPdf

Definition at line 39 of file RooChi2Var.h.

Constructor & Destructor Documentation

RooChi2Var() [1/5]

RooChi2Var::RooChi2Var	(	const char *	name,
		const char *	title,
		RooAbsReal &	func,
		RooDataHist &	hdata,
		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 RooCmdArg &	arg9 = RooCmdArg::none()
	)

RooChi2Var constructor.

Optional arguments are:

Parameters

[in]	name	Name of the PDF
[in]	title	Title for plotting etc.
[in]	func	Function
[in]	hdata	Data histogram
[in]	argX	Optional arguments according to table below. Argument Effect DataError() Choose between Poisson errors and Sum-of-weights errors NumCPU() Activate parallel processing feature Range() Fit only selected region Verbose() Verbose output of GOF framework IntegrateBins() Integrate PDF within each bin. This sets the desired precision. Only useful for binned fits.

Definition at line 93 of file RooChi2Var.cxx.

RooChi2Var() [2/5]

RooChi2Var::RooChi2Var	(	const char *	name,
		const char *	title,
		RooAbsPdf &	pdf,
		RooDataHist &	hdata,
		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 RooCmdArg &	arg9 = RooCmdArg::none()
	)

RooChi2Var constructor.

Optional arguments taken

Parameters

[in]	name	Name of the PDF
[in]	title	Title for plotting etc.
[in]	pdf	PDF to fit
[in]	hdata	Data histogram
[in]	argX	Optional arguments according to table below. Argument Effect Extended() Include extended term in calculation DataError() Choose between Poisson errors and Sum-of-weights errors NumCPU() Activate parallel processing feature Range() Fit only selected region SumCoefRange() Set the range in which to interpret the coefficients of RooAddPdf components SplitRange() Fit range is split by index catory of simultaneous PDF ConditionalObservables() Define projected observables Verbose() Verbose output of GOF framework IntegrateBins() Integrate PDF within each bin. This sets the desired precision.

Definition at line 159 of file RooChi2Var.cxx.

RooChi2Var() [3/5]

RooChi2Var::RooChi2Var	(	const char *	name,
		const char *	title,
		RooAbsPdf &	pdf,
		RooDataHist &	hdata,
		Bool_t	extended = kFALSE,
		const char *	cutRange = 0,
		const char *	addCoefRange = 0,
		Int_t	nCPU = 1,
		RooFit::MPSplit	interleave = RooFit::BulkPartition,
		Bool_t	verbose = kTRUE,
		Bool_t	splitCutRange = kTRUE,
		RooDataHist::ErrorType	etype = RooDataHist::SumW2
	)

Constructor of a chi2 for given p.d.f.

with respect given binned dataset. If cutRange is specified the calculation of the chi2 is restricted to that named range. If addCoefRange is specified, the interpretation of fractions for all component RooAddPdfs that do not have a frozen range interpretation is set to chosen range name. If nCPU is greater than one the chi^2 calculation is paralellized over the specified number of processors. If interleave is true the partitioning of event over processors follows a (i % n == i_set) strategy rather than a bulk partitioning strategy which may result in unequal load balancing in binned datasets with many (adjacent) zero bins. If splitCutRange is true the cutRange is used to construct an individual cutRange for each RooSimultaneous index category state name cutRange_{indexStateName}.

Definition at line 209 of file RooChi2Var.cxx.

RooChi2Var() [4/5]

RooChi2Var::RooChi2Var	(	const char *	name,
		const char *	title,
		RooAbsReal &	func,
		RooDataHist &	hdata,
		const RooArgSet &	projDeps,
		RooChi2Var::FuncMode	fmode,
		const char *	cutRange = 0,
		const char *	addCoefRange = 0,
		Int_t	nCPU = 1,
		RooFit::MPSplit	interleave = RooFit::BulkPartition,
		Bool_t	verbose = kTRUE,
		Bool_t	splitCutRange = kTRUE,
		RooDataHist::ErrorType	etype = RooDataHist::SumW2
	)

Constructor of a chi2 for given p.d.f.

with respect given binned dataset taking the observables specified in projDeps as projected observables. If cutRange is specified the calculation of the chi2 is restricted to that named range. If addCoefRange is specified, the interpretation of fractions for all component RooAddPdfs that do not have a frozen range interpretation is set to chosen range name. If nCPU is greater than one the chi^2 calculation is paralellized over the specified number of processors. If interleave is true the partitioning of event over processors follows a (i % n == i_set) strategy rather than a bulk partitioning strategy which may result in unequal load balancing in binned datasets with many (adjacent) zero bins. If splitCutRange is true the cutRange is used to construct an individual cutRange for each RooSimultaneous index category state name cutRange_{indexStateName}.

Definition at line 236 of file RooChi2Var.cxx.

RooChi2Var() [5/5]

RooChi2Var::RooChi2Var	(	const RooChi2Var &	other,
		const char *	name = 0
	)

Copy constructor.

Definition at line 249 of file RooChi2Var.cxx.

~RooChi2Var()

RooChi2Var::~RooChi2Var ( )

virtual

Destructor.

Definition at line 261 of file RooChi2Var.cxx.

Member Function Documentation

clone()

virtual TObject * RooChi2Var::clone ( const char *  newname ) const

inlinevirtual

Implements RooAbsArg.

Definition at line 50 of file RooChi2Var.h.

create()

virtual RooAbsTestStatistic * RooChi2Var::create ( const char *  name, const char *  title, RooAbsReal &  pdf, RooAbsData &  dhist, const RooArgSet &  projDeps, const char *  rangeName = 0, const char *  addCoefRangeName = 0, Int_t  nCPU = 1, RooFit::MPSplit  interleave = RooFit::BulkPartition, Bool_t  verbose = kTRUE, Bool_t  splitCutRange = kTRUE, Bool_t  = kFALSE  )

inlinevirtual

Implements RooAbsTestStatistic.

Definition at line 52 of file RooChi2Var.h.

defaultErrorLevel()

virtual Double_t RooChi2Var::defaultErrorLevel ( ) const

inlinevirtual

Reimplemented from RooAbsReal.

Definition at line 62 of file RooChi2Var.h.

evaluatePartition()

Double_t RooChi2Var::evaluatePartition ( std::size_t  firstEvent, std::size_t  lastEvent, std::size_t  stepSize  ) const

protectedvirtual

Calculate chi^2 in partition from firstEvent to lastEvent using given stepSize.

Implements RooAbsTestStatistic.

Definition at line 270 of file RooChi2Var.cxx.

Member Data Documentation

_emptySet

RooArgSet RooChi2Var::_emptySet

staticprotected

Definition at line 69 of file RooChi2Var.h.

_etype

RooDataHist::ErrorType RooChi2Var::_etype

protected

Definition at line 71 of file RooChi2Var.h.

_funcMode

FuncMode RooChi2Var::_funcMode

protected

Definition at line 72 of file RooChi2Var.h.

Libraries for RooChi2Var:

---

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

• roofit/roofitcore/inc/RooChi2Var.h
• roofit/roofitcore/src/RooChi2Var.cxx