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Reference Guide
Deprecated List
Module proof
We keep PROOF for those who still need it for legacy use cases. PROOF is not developed anymore and receiving only limited support. ROOT has since a few years moved to RDataFrame and related products as multi-core/multi-processing engines.
Member RooAbsArg::checkDependents (const RooArgSet *nset) const
Use checkObservables()
Member RooAbsArg::dependentOverlaps (const RooAbsData *dset, const RooAbsArg &testArg) const
Use observableOverlaps()
Member RooAbsArg::dependentOverlaps (const RooArgSet *depList, const RooAbsArg &testArg) const
Use observableOverlaps()
Member RooAbsArg::getDependents (const RooArgSet &set) const
Use getObservables()
Member RooAbsArg::getDependents (const RooAbsData *set) const
Use getObservables()
Member RooAbsArg::getDependents (const RooArgSet *depList) const
Use getObservables()
Member RooAbsArg::recursiveCheckDependents (const RooArgSet *nset) const
Use recursiveCheckObservables()
Member RooAbsCategory::defineType (const char *label, int index)
Use defineState(const std::string& label, value_type index)
Member RooAbsCategory::defineType (const char *label)
Use defineState(const std::string& label)
Member RooAbsCategory::defineTypeUnchecked (const char *label, value_type index)
Use defineStateUnchecked(const std::string& label, value_type index)
Member RooAbsCategory::lookupType (const RooCatType &type, Bool_t printError=kFALSE) const
RooCatType is not used, any more. This function will create one and let it leak. Use lookupIndex() (preferred) or lookupName() instead.
Member RooAbsCategory::lookupType (value_type index, Bool_t printError=kFALSE) const
RooCatType is not used, any more. This function will create one and let it leak. Use lookupIndex() (preferred) or lookupName() instead.
Member RooAbsCategory::lookupType (const char *label, Bool_t printError=kFALSE) const
RooCatType is not used, any more. This function will create one and let it leak. Use lookupIndex() (preferred) or lookupName() instead.
Member RooAbsCategory::typeIterator () const
Use begin() and end() instead.
Class RooAbsCategoryLegacyIterator

Legacy class to iterate through legacy RooAbsCategory states. Use RooAbsCategory::begin(), RooAbsCategory::end() or range-based for loops instead.

Member RooAbsData::statOn (RooPlot *frame, const RooCmdArg &arg1=RooCmdArg::none(), const RooCmdArg &arg2=RooCmdArg::none(), const RooCmdArg &arg3=RooCmdArg::none(), const RooCmdArg &arg4=RooCmdArg::none(), const RooCmdArg &arg5=RooCmdArg::none(), const RooCmdArg &arg6=RooCmdArg::none(), const RooCmdArg &arg7=RooCmdArg::none(), const RooCmdArg &arg8=RooCmdArg::none())
Classing parameter formatting options, provided for backward compatibility
Member RooAbsPdf::fitTo (RooAbsData &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())
Steer fit with classic options string (for backward compatibility).
Member RooAbsPdf::paramOn (RooPlot *frame, const RooAbsData *data, const char *label="", Int_t sigDigits=2, Option_t *options="NELU", Double_t xmin=0.65, Double_t xmax=0.9, Double_t ymax=0.9)
Obsolete, provided for backward compatibility. Don't use.
Member RooAbsPdf::paramOn (RooPlot *frame, const RooCmdArg &arg1=RooCmdArg::none(), const RooCmdArg &arg2=RooCmdArg::none(), const RooCmdArg &arg3=RooCmdArg::none(), const RooCmdArg &arg4=RooCmdArg::none(), const RooCmdArg &arg5=RooCmdArg::none(), const RooCmdArg &arg6=RooCmdArg::none(), const RooCmdArg &arg7=RooCmdArg::none(), const RooCmdArg &arg8=RooCmdArg::none())
Classing parameter formatting options, provided for backward compatibility
Member RooAbsReal::evaluateBatch (std::size_t, std::size_t)=delete
evaluateBatch() has been removed in favour of the faster evaluateSpan(). If your code is affected by this change, please consult the release notes for ROOT 6.24 for guidance on how to make this transition. https://root.cern/doc/v624/release-notes.html
Member RooAbsReal::getValBatch (std::size_t, std::size_t, const RooArgSet *=nullptr)=delete
getValBatch() has been removed in favour of the faster getValues(). If your code is affected by this change, please consult the release notes for ROOT 6.24 for guidance on how to make this transition. https://root.cern/doc/v624/release-notes.html
Member RooAbsReal::plotSliceOn (RooPlot *frame, const RooArgSet &sliceSet, Option_t *drawOptions="L", Double_t scaleFactor=1.0, ScaleType stype=Relative, const RooAbsData *projData=0) const
OBSOLETE – RETAINED FOR BACKWARD COMPATIBILITY. Use plotOn() with Slice() instead
Member RooCategoryProxy
Use RooTemplateProxy<RooAbsCategory> or more appropriate template parameters.
Member RooDataHist::binVolume () const
Use binVolume(std::size_t) const.
Member RooDataHist::calcTreeIndex () const
Use calcTreeIndex(const RooArgSet&,bool) const.
Member RooDataHist::set (Double_t weight, Double_t wgtErr=-1)

Use set(std::size_t,double,double)

Prefer set(std::size_t, double, double).

Member RooDataHist::valid () const override
Use the safer valid(std::size_t) const.
Member RooDataHist::weight () const override
Use the safer weight(std::size_t) const.
Member RooDataHist::weightSquared () const override
Use the safer weightSquared(std::size_t) const.
Member RooMCStudy::RooMCStudy (const RooAbsPdf &genModel, const RooAbsPdf &fitModel, const RooArgSet &dependents, const char *genOptions="", const char *fitOptions="", const RooDataSet *genProtoData=0, const RooArgSet &projDeps=RooArgSet())
PLEASE USE CONSTRUCTOR WITH NAMED ARGUMENTS. RETAINED FOR BACKWARD COMPATIBILY.
Class RooMultiCatIter
RooMultiCatIter is unnecessary, since all multi category classes know how to generate their own states. Use begin() / end() and range-based for loops on instances of these classes.
Member RooRealProxy
Use RooTemplateProxy<RooAbsReal> or more appropriate template parameters.
Member RooSuperCategory::MakeIterator () const
Use begin(), end() or range-based for loops to iterate through state names.
Member RooTemplateProxy< T >::lvptr (const LValue_t *) const
This function is unneccessary if the template parameter is RooAbsRealLValue (+ derived types) or RooAbsCategoryLValue (+derived types), as arg() will always return the correct type.
Class TGeoTrack
Use of TGeoTrack is deprecated. For the event display please switch to TEve (using TEveTracks or TEvePointSet to display tracks specifically) or to REve.
Class THtml
We keep THtml for those who still need it for legacy use cases. ROOT has since several years moved to doxygen as documentation generator. THtml is not developed nor supported anymore; please migrate to doxygen instead.
Member THttpCallArg::SetPostData (void *data, Long_t length, Bool_t make_copy=kFALSE)
Use signature with std::string Set data, posted with the request If make_copy==kFALSE, data will be released with free(data) call
Member THttpServer::ReadFileContent (const char *filename, Int_t &len)
reads file content