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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
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.
In this case, one can use the expected errors of the PDF instead of the data errors:
RooChi2Var implements a simple calculation from a binned dataset and a PDF.
Definition RooChi2Var.h:25
RooCmdArg DataError(Int_t)

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 ,
}

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 ,
}

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 TObjectclone (const char *newname) const

virtual RooAbsTestStatisticcreate (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.

RooAbsRealfunction ()

const RooAbsRealfunction () 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.

TF1asTF (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.

RooAbsFuncbindVars (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 RooFitResultchi2FitTo (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 RooFitResultchi2FitTo (RooDataHist &data, const RooLinkedList &cmdList)
Perform a $$\chi^2$$ fit to given histogram.

virtual RooFitResultchi2FitTo (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 RooFitResultchi2FitTo (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 RooAbsRealcreateChi2 (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 RooAbsRealcreateChi2 (RooDataHist &data, const RooLinkedList &cmdList)
Create a $$\chi^2$$ variable from a histogram and this function.

virtual RooAbsRealcreateChi2 (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 RooAbsRealcreateChi2 (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&)

RooAbsArgcreateFundamental (const char *newname=0) const
Create a RooRealVar fundamental object with our properties.

TH1createHistogram (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.

TH1createHistogram (const char *name, const RooAbsRealLValue &xvar, RooLinkedList &argList) const
Internal method implementing createHistogram.

TH1createHistogram (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.

RooAbsRealcreateIntegral (const RooArgSet &iset, const char *rangeName) const
Create integral over observables in iset in range named rangeName.

RooAbsRealcreateIntegral (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.

RooAbsRealcreateIntegral (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 RooAbsRealcreateIntegral (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.

RooAbsRealcreateIntegral (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.

RooAbsRealcreateIntegral (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.

RooAbsRealcreateIntRI (const RooArgSet &iset, const RooArgSet &nset=RooArgSet())
Utility function for createRunningIntegral.

const RooAbsRealcreatePlotProjection (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 RooAbsRealcreatePlotProjection (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 RooAbsRealcreatePlotProjection (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 RooAbsRealcreateProfile (const RooArgSet &paramsOfInterest)
Create a RooProfileLL object that eliminates all nuisance parameters in the present function.

RooAbsRealcreateRunningIntegral (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&)

RooAbsRealcreateRunningIntegral (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.

RooAbsRealcreateScanRI (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.

RooDerivativederivative (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.

RooDerivativederivative (RooRealVar &obs, Int_t order=1, Double_t eps=0.001)
Return function representing first, second or third order derivative of this function.

RooDataHistfillDataHist (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.

TH1fillHistogram (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.

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)

RooFunctorfunctor (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

RooNumIntConfiggetIntegratorConfig ()
Return the numeric integration configuration used for this object.

const RooNumIntConfiggetIntegratorConfig () 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_tgetUnit () 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 doublegetValBatch (std::size_t, std::size_t, const RooArgSet *=nullptr)=delete

virtual RooSpan< const doublegetValues (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.

RooMultiGenFunctioniGenFunction (const RooArgSet &observables, const RooArgSet &nset=RooArgSet())

RooGenFunctioniGenFunction (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.

RooAbsMomentmean (RooRealVar &obs)

RooAbsMomentmean (RooRealVar &obs, const RooArgSet &nset)

virtual Int_t minTrialSamples (const RooArgSet &) const

RooAbsMomentmoment (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.

RooAbsMomentmoment (RooRealVar &obs, Int_t order, Bool_t central, Bool_t takeRoot)
Return function representing moment of function of given order.

RooAbsRealoperator= (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 RooPlotplotOn (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 RooPlotplotOn (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 RooPlotplotSliceOn (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)

RooAbsMomentsigma (RooRealVar &obs)

RooAbsMomentsigma (RooRealVar &obs, const RooArgSet &nset)

RooNumIntConfigspecialIntegratorConfig () const
Returns the specialized integrator configuration for this RooAbsReal.

RooNumIntConfigspecialIntegratorConfig (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.

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 TObjectClone (const char *newname=0) const
Make a clone of an object using the Streamer facility.

virtual RooAbsArgcloneTree (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.

Return ancestors in cloning chain of this RooAbsArg.

RooArgSetgetComponents () const
Create a RooArgSet with all components (branch nodes) of the expression tree headed by this object.

RooArgSetgetObservables (const RooAbsData &data) const
Return the observables of this pdf given the observables defined by data.

RooArgSetgetObservables (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).

RooArgSetgetObservables (const RooArgSet &set, Bool_t valueOnly=kTRUE) const
Given a set of possible observables, return the observables that this PDF depends on.

RooArgSetgetObservables (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.

RooArgSetgetParameters (const RooAbsData &data, bool stripDisconnected=true) const
Return the parameters of this p.d.f when used in conjuction with dataset 'data'.

RooArgSetgetParameters (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).

RooArgSetgetParameters (const RooArgSet &observables, bool stripDisconnected=true) const
Return the parameters of the p.d.f given the provided set of observables.

RooArgSetgetParameters (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.

RooAbsProxygetProxy (Int_t index) const
Return the nth proxy from the proxy list.

const Text_tgetStringAttribute (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.

RooArgSetgetVariables (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 TNamednamePtr () 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.

RooAbsArgoperator= (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 RooArgSetownedComponents () 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

TIteratorclientIterator () const
Retrieve a client iterator.

TIteratorvalueClientIterator () const

TIteratorshapeClientIterator () const

TIteratorserverIterator () const

RooFIter valueClientMIterator () const

RooFIter shapeClientMIterator () const

RooFIter serverMIterator () const

RooArgSetgetDependents (const RooArgSet &set) const

RooArgSetgetDependents (const RooAbsData *set) const

RooArgSetgetDependents (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_tclients () const
List of all clients of this object.

const RefCountList_tvalueClients () const
List of all value clients of this object. Value clients receive value updates.

const RefCountList_tshapeClients () const
List of all shape clients of this object.

const RefCountList_tservers () const
List of all servers of this object.

RooAbsArgfindServer (const char *name) const
Return server of this with name name. Returns nullptr if not found.

RooAbsArgfindServer (const RooAbsArg &arg) const
Return server of this that has the same name as arg. Returns nullptr if not found.

RooAbsArgfindServer (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.

RooAbsArgfindNewServer (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.

RooAbsCachegetCache (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 ()

RooExpensiveObjectCacheexpensiveObjectCache () 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.

TNamedoperator= (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.

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 TObjectDrawClone (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 TObjectFindObject (const char *name) const
Must be redefined in derived classes.

virtual TObjectFindObject (const TObject *obj) const
Must be redefined in derived classes.

virtual Option_tGetDrawOption () 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_tGetOption () 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 [].

voidoperator new (size_t sz)

voidoperator new (size_t sz, void *vp)

voidoperator new[] (size_t sz)

voidoperator new[] (size_t sz, void *vp)

TObjectoperator= (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)

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.

RooAbsRealcreateIntObj (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< doubleevaluateBatch (std::size_t, std::size_t)=delete

virtual RooSpan< doubleevaluateSpan (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 RooPlotplotAsymOn (RooPlot *frame, const RooAbsCategoryLValue &asymCat, PlotOpt o) const

virtual RooPlotplotOn (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.

RooPlotplotOnWithErrorBand (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

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

Static Public Member Functions inherited from RooAbsReal
static void clearEvalErrorLog ()
Clear the stack of evaluation error messages.

static RooNumIntConfigdefaultIntegratorConfig ()
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:
[legend]

## ◆ FuncMode

 enum RooChi2Var::FuncMode
Enumerator
Function
Pdf
ExtendedPdf

Definition at line 39 of file RooChi2Var.h.

## ◆ 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]nameName of the PDF
[in]titleTitle for plotting etc.
[in]funcFunction
[in]argXOptional 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]nameName of the PDF
[in]titleTitle for plotting etc.
[in]pdfPDF to fit
[in]argXOptional 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.

## ◆ 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.

## ◆ _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: