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Reference Guide
RooTreeDataStore Class Reference

RooTreeDataStore is a TTree-backed data storage. When a file is opened before creating the data storage, the storage will be file-backed. This reduces memory pressure because it allows storing the data in the file and reading it on demand. For a completely memory-backed storage, which is faster than the file-backed storage, RooVectorDataStore can be used.

With tree-backed storage, the tree can be found in the file with the name RooTreeDataStore_name_title for a dataset created as RooDataSet("name", "title", ...).

Note
A file needs to be opened before creating the data storage to enable file-backed storage.
TFile outputFile("filename.root", "RECREATE");
RooDataSet mydata(...);

One can also change between TTree- and std::vector-backed storage using RooAbsData::convertToTreeStore() and RooAbsData::convertToVectorStore().

Definition at line 31 of file RooTreeDataStore.h.

Public Member Functions

 RooTreeDataStore ()
 
 RooTreeDataStore (const char *name, const char *title, const RooArgSet &vars, const char *wgtVarName=0)
 
 RooTreeDataStore (const char *name, const char *title, const RooArgSet &vars, const RooAbsDataStore &tds, const char *selExpr=0, const char *wgtVarName=0)
 
 RooTreeDataStore (const char *name, const char *title, const RooArgSet &vars, const RooAbsDataStore &tds, const RooFormulaVar &select, const char *wgtVarName=0)
 
 RooTreeDataStore (const char *name, const char *title, const RooArgSet &vars, TTree &t, const char *selExpr=0, const char *wgtVarName=0)
 
 RooTreeDataStore (const char *name, const char *title, const RooArgSet &vars, TTree &t, const RooFormulaVar &select, const char *wgtVarName=0)
 
 RooTreeDataStore (const char *name, const char *title, RooAbsDataStore &tds, const RooArgSet &vars, const RooFormulaVar *cutVar, const char *cutRange, Int_t nStart, Int_t nStop, Bool_t, const char *wgtVarName=0)
 
 RooTreeDataStore (const RooTreeDataStore &other, const char *newname=0)
 
 RooTreeDataStore (const RooTreeDataStore &other, const RooArgSet &vars, const char *newname=0)
 
 RooTreeDataStore (TTree *t, const RooArgSet &vars, const char *wgtVarName=0)
 Constructor to facilitate reading of legacy RooDataSets. More...
 
virtual ~RooTreeDataStore ()
 Destructor. More...
 
virtual RooAbsArgaddColumn (RooAbsArg &var, Bool_t adjustRange=kTRUE)
 Add a new column to the data set which holds the pre-calculated values of 'newVar'. More...
 
virtual RooArgSetaddColumns (const RooArgList &varList)
 Utility function to add multiple columns in one call See addColumn() for details. More...
 
virtual void append (RooAbsDataStore &other)
 
virtual void attachBuffers (const RooArgSet &extObs)
 
virtual void cacheArgs (const RooAbsArg *owner, RooArgSet &varSet, const RooArgSet *nset=0, Bool_t skipZeroWeights=kFALSE)
 Cache given RooAbsArgs with this tree: The tree is given direct write access of the args internal cache the args values is pre-calculated for all data points in this data collection. More...
 
virtual const RooAbsArgcacheOwner ()
 
virtual Bool_t changeObservableName (const char *from, const char *to)
 Change name of internal observable named 'from' into 'to'. More...
 
virtual void checkInit () const
 
virtual RooAbsDataStoreclone (const char *newname=0) const
 
virtual RooAbsDataStoreclone (const RooArgSet &vars, const char *newname=0) const
 
void Draw (Option_t *option="")
 Default Draw method for all objects. More...
 
virtual Int_t fill ()
 Interface function to TTree::Fill. More...
 
Int_t Fill ()
 Interface function to TTree::Fill. More...
 
virtual const RooArgSetget () const
 
virtual const RooArgSetget (Int_t index) const
 Load the n-th data point (n='index') in memory and return a pointer to the internal RooArgSet holding its coordinates. More...
 
virtual const RooArgSetget (Int_t index) const=0
 
virtual std::vector< RooSpan< const double > > getBatch (std::size_t first, std::size_t last) const
 
Stat_t GetEntries () const
 Interface function to TTree::GetEntries. More...
 
Int_t GetEntry (Int_t entry=0, Int_t getall=0)
 Interface function to TTree::GetEntry. More...
 
virtual Bool_t isWeighted () const
 
void loadValues (const RooAbsDataStore *tds, const RooFormulaVar *select=0, const char *rangeName=0, std::size_t nStart=0, std::size_t nStop=std::numeric_limits< std::size_t >::max())
 Load values from dataset 't' into this data collection, optionally selecting events using 'select' RooFormulaVar. More...
 
void loadValues (const TTree *t, const RooFormulaVar *select=0, const char *rangeName=0, Int_t nStart=0, Int_t nStop=2000000000)
 Load values from tree 't' into this data collection, optionally selecting events using the RooFormulaVar 'select'. More...
 
RooAbsDataStoremerge (const RooArgSet &allvars, std::list< RooAbsDataStore * > dstoreList)
 Merge columns of supplied data set(s) with this data set. More...
 
virtual Int_t numEntries () const
 
virtual void reset ()
 
void Reset (Option_t *option=0)
 Interface function to TTree::Reset. More...
 
virtual void resetBuffers ()
 
virtual void resetCache ()
 Remove tree with values of cached observables and clear list of cached observables. More...
 
void restoreAlternateBuffers ()
 
const RooArgSetrow ()
 
virtual void setArgStatus (const RooArgSet &set, Bool_t active)
 Activate or deactivate the branch status of the TTree branch associated with the given set of dataset observables. More...
 
void setExternalWeightArray (const Double_t *arrayWgt, const Double_t *arrayWgtErrLo, const Double_t *arrayWgtErrHi, const Double_t *arraySumW2)
 
virtual Double_t sumEntries () const
 
TTreetree ()
 
virtual const TTreetree () const
 
virtual Bool_t valid () const
 Return true if currently loaded coordinate is considered valid within the current range definitions of all observables. More...
 
virtual Double_t weight () const
 Return the weight of the n-th data point (n='index') in memory. More...
 
virtual Double_t weight (Int_t index) const
 Return the weight of the n-th data point (n='index') in memory. More...
 
virtual void weightError (Double_t &lo, Double_t &hi, RooAbsData::ErrorType etype=RooAbsData::Poisson) const
 
virtual Double_t weightError (RooAbsData::ErrorType etype=RooAbsData::Poisson) const
 
- Public Member Functions inherited from RooAbsDataStore
 RooAbsDataStore ()
 Default constructor. More...
 
 RooAbsDataStore (const char *name, const char *title, const RooArgSet &vars)
 Default constructor. More...
 
 RooAbsDataStore (const RooAbsDataStore &other, const char *newname=0)
 
 RooAbsDataStore (const RooAbsDataStore &other, const RooArgSet &vars, const char *newname=0)
 
virtual ~RooAbsDataStore ()
 Destructor. More...
 
const RooArgSetcachedVars () const
 
virtual Int_t defaultPrintContents (Option_t *opt) const
 Define default print options, for a given print style. More...
 
Bool_t dirtyProp () const
 
virtual void dump ()
 
virtual void forceCacheUpdate ()
 
virtual const RooArgSetget () const
 
virtual RooSpan< const doublegetWeightBatch (std::size_t first, std::size_t len) const
 Get the weights of the events in the range [first, first+size). More...
 
virtual Bool_t hasFilledCache () const
 
virtual void Print (Option_t *options=0) const
 Print TNamed name and title. More...
 
virtual void printArgs (std::ostream &os) const
 Print argument of dataset, i.e. the observable names. More...
 
virtual void printClassName (std::ostream &os) const
 Print class name of dataset. More...
 
void printMultiline (std::ostream &os, Int_t content, Bool_t verbose, TString indent) const
 Detailed printing interface. More...
 
virtual void printName (std::ostream &os) const
 Print name of dataset. More...
 
virtual void printTitle (std::ostream &os) const
 Print title of dataset. More...
 
virtual void printValue (std::ostream &os) const
 Print value of the dataset, i.e. the sum of weights contained in the dataset. More...
 
virtual void recalculateCache (const RooArgSet *, Int_t, Int_t, Int_t, Bool_t)
 
virtual void setDirtyProp (Bool_t flag)
 
- Public Member Functions inherited from TNamed
 TNamed ()
 
 TNamed (const char *name, const char *title)
 
 TNamed (const TNamed &named)
 TNamed copy ctor. More...
 
 TNamed (const TString &name, const TString &title)
 
virtual ~TNamed ()
 TNamed destructor. More...
 
virtual void Clear (Option_t *option="")
 Set name and title to empty strings (""). More...
 
virtual TObjectClone (const char *newname="") const
 Make a clone of an object using the Streamer facility. More...
 
virtual Int_t Compare (const TObject *obj) const
 Compare two TNamed objects. More...
 
virtual void Copy (TObject &named) const
 Copy this to obj. More...
 
virtual void FillBuffer (char *&buffer)
 Encode TNamed into output buffer. More...
 
virtual const char * GetName () const
 Returns name of object. More...
 
virtual const char * GetTitle () const
 Returns title of object. More...
 
virtual ULong_t Hash () const
 Return hash value for this object. More...
 
virtual Bool_t IsSortable () const
 
virtual void ls (Option_t *option="") const
 List TNamed name and title. More...
 
TNamedoperator= (const TNamed &rhs)
 TNamed assignment operator. More...
 
virtual void SetName (const char *name)
 Set the name of the TNamed. More...
 
virtual void SetNameTitle (const char *name, const char *title)
 Set all the TNamed parameters (name and title). More...
 
virtual void SetTitle (const char *title="")
 Set the title of the TNamed. More...
 
virtual Int_t Sizeof () const
 Return size of the TNamed part of the TObject. More...
 
- Public Member Functions inherited from TObject
 TObject ()
 TObject constructor. More...
 
 TObject (const TObject &object)
 TObject copy ctor. More...
 
virtual ~TObject ()
 TObject destructor. More...
 
void AbstractMethod (const char *method) const
 Use this method to implement an "abstract" method that you don't want to leave purely abstract. More...
 
virtual void AppendPad (Option_t *option="")
 Append graphics object to current pad. More...
 
virtual void Browse (TBrowser *b)
 Browse object. May be overridden for another default action. More...
 
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. More...
 
virtual const char * ClassName () const
 Returns name of class to which the object belongs. More...
 
virtual void Delete (Option_t *option="")
 Delete this object. More...
 
virtual Int_t DistancetoPrimitive (Int_t px, Int_t py)
 Computes distance from point (px,py) to the object. More...
 
virtual void DrawClass () const
 Draw class inheritance tree of the class to which this object belongs. More...
 
virtual TObjectDrawClone (Option_t *option="") const
 Draw a clone of this object in the current selected pad for instance with: gROOT->SetSelectedPad(gPad). More...
 
virtual void Dump () const
 Dump contents of object on stdout. More...
 
virtual void Error (const char *method, const char *msgfmt,...) const
 Issue error message. More...
 
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. More...
 
virtual void Execute (TMethod *method, TObjArray *params, Int_t *error=0)
 Execute method on this object with parameters stored in the TObjArray. More...
 
virtual void ExecuteEvent (Int_t event, Int_t px, Int_t py)
 Execute action corresponding to an event at (px,py). More...
 
virtual void Fatal (const char *method, const char *msgfmt,...) const
 Issue fatal error message. More...
 
virtual TObjectFindObject (const char *name) const
 Must be redefined in derived classes. More...
 
virtual TObjectFindObject (const TObject *obj) const
 Must be redefined in derived classes. More...
 
virtual Option_tGetDrawOption () const
 Get option used by the graphics system to draw this object. More...
 
virtual const char * GetIconName () const
 Returns mime type name of object. More...
 
virtual char * GetObjectInfo (Int_t px, Int_t py) const
 Returns string containing info about the object at position (px,py). More...
 
virtual Option_tGetOption () const
 
virtual UInt_t GetUniqueID () const
 Return the unique object id. More...
 
virtual Bool_t HandleTimer (TTimer *timer)
 Execute action in response of a timer timing out. More...
 
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. More...
 
virtual void Info (const char *method, const char *msgfmt,...) const
 Issue info message. More...
 
virtual Bool_t InheritsFrom (const char *classname) const
 Returns kTRUE if object inherits from class "classname". More...
 
virtual Bool_t InheritsFrom (const TClass *cl) const
 Returns kTRUE if object inherits from TClass cl. More...
 
virtual void Inspect () const
 Dump contents of this object in a graphics canvas. More...
 
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). More...
 
virtual Bool_t IsFolder () const
 Returns kTRUE in case object contains browsable objects (like containers or lists of other objects). More...
 
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). More...
 
virtual Bool_t Notify ()
 This method must be overridden to handle object notification. More...
 
void Obsolete (const char *method, const char *asOfVers, const char *removedFromVers) const
 Use this method to declare a method obsolete. More...
 
void operator delete (void *ptr)
 Operator delete. More...
 
void operator delete[] (void *ptr)
 Operator delete []. More...
 
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. More...
 
virtual void Paint (Option_t *option="")
 This method must be overridden if a class wants to paint itself. More...
 
virtual void Pop ()
 Pop on object drawn in a pad to the top of the display list. More...
 
virtual Int_t Read (const char *name)
 Read contents of object with specified name from the current directory. More...
 
virtual void RecursiveRemove (TObject *obj)
 Recursively remove this object from a list. More...
 
void ResetBit (UInt_t f)
 
virtual void SaveAs (const char *filename="", Option_t *option="") const
 Save this object in the file specified by filename. More...
 
virtual void SavePrimitive (std::ostream &out, Option_t *option="")
 Save a primitive as a C++ statement(s) on output stream "out". More...
 
void SetBit (UInt_t f)
 
void SetBit (UInt_t f, Bool_t set)
 Set or unset the user status bits as specified in f. More...
 
virtual void SetDrawOption (Option_t *option="")
 Set drawing option for object. More...
 
virtual void SetUniqueID (UInt_t uid)
 Set the unique object id. More...
 
virtual void SysError (const char *method, const char *msgfmt,...) const
 Issue system error message. More...
 
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. More...
 
virtual void Warning (const char *method, const char *msgfmt,...) const
 Issue warning message. More...
 
virtual Int_t Write (const char *name=0, Int_t option=0, Int_t bufsize=0)
 Write this object to the current directory. More...
 
virtual Int_t Write (const char *name=0, Int_t option=0, Int_t bufsize=0) const
 Write this object to the current directory. More...
 
- Public Member Functions inherited from RooPrintable
 RooPrintable ()
 
virtual ~RooPrintable ()
 
virtual StyleOption defaultPrintStyle (Option_t *opt) const
 
virtual void printAddress (std::ostream &os) const
 Print class name of object. More...
 
virtual void printExtras (std::ostream &os) const
 Interface to print extras of object. More...
 
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'. More...
 
virtual void printTree (std::ostream &os, TString indent="") const
 Interface for tree structure printing of object. More...
 

Private Member Functions

void attachCache (const RooAbsArg *newOwner, const RooArgSet &cachedVars)
 Initialize cache of dataset: attach variables of cache ArgSet to the corresponding TTree branches. More...
 
void createTree (const char *name, const char *title)
 Create TTree object that lives in memory, independent of current location of gDirectory. More...
 
Int_t getBranchBufferSize () const
 
void initialize ()
 One-time initialization common to all constructor forms. More...
 
std::string makeTreeName () const
 Generate a name for the storage tree from the name and title of this instance. More...
 
void setBranchBufferSize (Int_t size)
 
RooArgSet varsNoWeight (const RooArgSet &allVars, const char *wgtName=0)
 Utility function for constructors Return RooArgSet that is copy of allVars minus variable matching wgtName if specified. More...
 
RooRealVarweightVar (const RooArgSet &allVars, const char *wgtName=0)
 Utility function for constructors Return pointer to weight variable if it is defined. More...
 

Private Attributes

RooArgSet _attachedBuffers
 
const RooAbsArg_cacheOwner
 TTree holding the cached function values. More...
 
TTree_cacheTree
 
Double_t _curWgt
 External sum of weights array. More...
 
Double_t _curWgtErr
 
Double_t _curWgtErrHi
 
Double_t _curWgtErrLo
 
Bool_t _defCtor
 Object owning cache contents. More...
 
const Double_t_extSumW2Array {nullptr}
 External weight array - high error. More...
 
const Double_t_extWgtArray {nullptr}
 
const Double_t_extWgtErrHiArray {nullptr}
 External weight array - low error. More...
 
const Double_t_extWgtErrLoArray {nullptr}
 External weight array. More...
 
TTree_tree
 
RooArgSet _varsww
 Was object constructed with default ctor? More...
 
RooRealVar_wgtVar
 

Static Private Attributes

static Int_t _defTreeBufSize = 10*1024*1024
 

Friends

class RooVectorDataStore
 

Additional Inherited Members

- 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
}
 
- Static Public Member Functions inherited from TObject
static Long_t GetDtorOnly ()
 Return destructor only flag. More...
 
static Bool_t GetObjectStat ()
 Get status of object stat flag. More...
 
static void SetDtorOnly (void *obj)
 Set destructor only flag. More...
 
static void SetObjectStat (Bool_t stat)
 Turn on/off tracking of objects in the TObjectTable. More...
 
- 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(). More...
 
static void nameFieldLength (Int_t newLen)
 Set length of field reserved from printing name of RooAbsArgs in multi-line collection printing to given amount. More...
 
- 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). More...
 
void MakeZombie ()
 
- Protected Attributes inherited from RooAbsDataStore
RooArgSet _cachedVars
 
Bool_t _doDirtyProp
 
RooArgSet _vars
 
- Protected Attributes inherited from TNamed
TString fName
 
TString fTitle
 
- Static Protected Attributes inherited from RooPrintable
static Int_t _nameLength
 

#include <RooTreeDataStore.h>

Inheritance diagram for RooTreeDataStore:
[legend]

Constructor & Destructor Documentation

◆ RooTreeDataStore() [1/10]

RooTreeDataStore::RooTreeDataStore ( )

Definition at line 74 of file RooTreeDataStore.cxx.

◆ RooTreeDataStore() [2/10]

RooTreeDataStore::RooTreeDataStore ( TTree t,
const RooArgSet vars,
const char *  wgtVarName = 0 
)

Constructor to facilitate reading of legacy RooDataSets.

Definition at line 92 of file RooTreeDataStore.cxx.

◆ RooTreeDataStore() [3/10]

RooTreeDataStore::RooTreeDataStore ( const char *  name,
const char *  title,
const RooArgSet vars,
const char *  wgtVarName = 0 
)

Definition at line 109 of file RooTreeDataStore.cxx.

◆ RooTreeDataStore() [4/10]

RooTreeDataStore::RooTreeDataStore ( const char *  name,
const char *  title,
const RooArgSet vars,
TTree t,
const RooFormulaVar select,
const char *  wgtVarName = 0 
)

Definition at line 130 of file RooTreeDataStore.cxx.

◆ RooTreeDataStore() [5/10]

RooTreeDataStore::RooTreeDataStore ( const char *  name,
const char *  title,
const RooArgSet vars,
TTree t,
const char *  selExpr = 0,
const char *  wgtVarName = 0 
)

Definition at line 151 of file RooTreeDataStore.cxx.

◆ RooTreeDataStore() [6/10]

RooTreeDataStore::RooTreeDataStore ( const char *  name,
const char *  title,
const RooArgSet vars,
const RooAbsDataStore tds,
const RooFormulaVar select,
const char *  wgtVarName = 0 
)

Definition at line 179 of file RooTreeDataStore.cxx.

◆ RooTreeDataStore() [7/10]

RooTreeDataStore::RooTreeDataStore ( const char *  name,
const char *  title,
const RooArgSet vars,
const RooAbsDataStore tds,
const char *  selExpr = 0,
const char *  wgtVarName = 0 
)

Definition at line 200 of file RooTreeDataStore.cxx.

◆ RooTreeDataStore() [8/10]

RooTreeDataStore::RooTreeDataStore ( const char *  name,
const char *  title,
RooAbsDataStore tds,
const RooArgSet vars,
const RooFormulaVar cutVar,
const char *  cutRange,
Int_t  nStart,
Int_t  nStop,
Bool_t  ,
const char *  wgtVarName = 0 
)

Definition at line 229 of file RooTreeDataStore.cxx.

◆ RooTreeDataStore() [9/10]

RooTreeDataStore::RooTreeDataStore ( const RooTreeDataStore other,
const char *  newname = 0 
)

Definition at line 330 of file RooTreeDataStore.cxx.

◆ RooTreeDataStore() [10/10]

RooTreeDataStore::RooTreeDataStore ( const RooTreeDataStore other,
const RooArgSet vars,
const char *  newname = 0 
)

Definition at line 353 of file RooTreeDataStore.cxx.

◆ ~RooTreeDataStore()

RooTreeDataStore::~RooTreeDataStore ( )
virtual

Destructor.

Definition at line 379 of file RooTreeDataStore.cxx.

Member Function Documentation

◆ addColumn()

RooAbsArg * RooTreeDataStore::addColumn ( RooAbsArg newVar,
Bool_t  adjustRange = kTRUE 
)
virtual

Add a new column to the data set which holds the pre-calculated values of 'newVar'.

This operation is only meaningful if 'newVar' is a derived value.

The return value points to the added element holding 'newVar's value in the data collection. The element is always the corresponding fundamental type of 'newVar' (e.g. a RooRealVar if 'newVar' is a RooFormulaVar)

Note: This function is explicitly NOT intended as a speed optimization opportunity for the user. Components of complex PDFs that can be precalculated with the dataset are automatically identified as such and will be precalculated when fitting to a dataset

By forcibly precalculating functions with non-trivial Jacobians, or functions of multiple variables occurring in the data set, using addColumn(), you may alter the outcome of the fit.

Only in cases where such a modification of fit behaviour is intentional, this function should be used.

Implements RooAbsDataStore.

Definition at line 877 of file RooTreeDataStore.cxx.

◆ addColumns()

RooArgSet * RooTreeDataStore::addColumns ( const RooArgList varList)
virtual

Utility function to add multiple columns in one call See addColumn() for details.

Implements RooAbsDataStore.

Definition at line 937 of file RooTreeDataStore.cxx.

◆ append()

void RooTreeDataStore::append ( RooAbsDataStore other)
virtual

Implements RooAbsDataStore.

Definition at line 1049 of file RooTreeDataStore.cxx.

◆ attachBuffers()

void RooTreeDataStore::attachBuffers ( const RooArgSet extObs)
virtual

Implements RooAbsDataStore.

Definition at line 1225 of file RooTreeDataStore.cxx.

◆ attachCache()

void RooTreeDataStore::attachCache ( const RooAbsArg newOwner,
const RooArgSet cachedVars 
)
privatevirtual

Initialize cache of dataset: attach variables of cache ArgSet to the corresponding TTree branches.

Implements RooAbsDataStore.

Definition at line 308 of file RooTreeDataStore.cxx.

◆ cacheArgs()

void RooTreeDataStore::cacheArgs ( const RooAbsArg owner,
RooArgSet newVarSet,
const RooArgSet nset = 0,
Bool_t  skipZeroWeights = kFALSE 
)
virtual

Cache given RooAbsArgs with this tree: The tree is given direct write access of the args internal cache the args values is pre-calculated for all data points in this data collection.

Upon a get() call, the internal cache of 'newVar' will be loaded with the precalculated value and it's dirty flag will be cleared.

Implements RooAbsDataStore.

Definition at line 1130 of file RooTreeDataStore.cxx.

◆ cacheOwner()

virtual const RooAbsArg* RooTreeDataStore::cacheOwner ( )
inlinevirtual

Implements RooAbsDataStore.

Definition at line 118 of file RooTreeDataStore.h.

◆ changeObservableName()

Bool_t RooTreeDataStore::changeObservableName ( const char *  from,
const char *  to 
)
virtual

Change name of internal observable named 'from' into 'to'.

Implements RooAbsDataStore.

Definition at line 807 of file RooTreeDataStore.cxx.

◆ checkInit()

void RooTreeDataStore::checkInit ( ) const
virtual

Reimplemented from RooAbsDataStore.

Definition at line 1273 of file RooTreeDataStore.cxx.

◆ clone() [1/2]

virtual RooAbsDataStore* RooTreeDataStore::clone ( const char *  newname = 0) const
inlinevirtual

Implements RooAbsDataStore.

Definition at line 39 of file RooTreeDataStore.h.

◆ clone() [2/2]

virtual RooAbsDataStore* RooTreeDataStore::clone ( const RooArgSet vars,
const char *  newname = 0 
) const
inlinevirtual

Implements RooAbsDataStore.

Definition at line 40 of file RooTreeDataStore.h.

◆ createTree()

void RooTreeDataStore::createTree ( const char *  name,
const char *  title 
)
private

Create TTree object that lives in memory, independent of current location of gDirectory.

Definition at line 414 of file RooTreeDataStore.cxx.

◆ Draw()

void RooTreeDataStore::Draw ( Option_t option = "")
virtual

Default Draw method for all objects.

Reimplemented from TObject.

Definition at line 1326 of file RooTreeDataStore.cxx.

◆ fill()

Int_t RooTreeDataStore::fill ( )
virtual

Interface function to TTree::Fill.

Implements RooAbsDataStore.

Definition at line 624 of file RooTreeDataStore.cxx.

◆ Fill()

Int_t RooTreeDataStore::Fill ( )

Interface function to TTree::Fill.

Definition at line 1306 of file RooTreeDataStore.cxx.

◆ get() [1/3]

virtual const RooArgSet* RooAbsDataStore::get
inline

Definition at line 47 of file RooAbsDataStore.h.

◆ get() [2/3]

const RooArgSet * RooTreeDataStore::get ( Int_t  index) const
virtual

Load the n-th data point (n='index') in memory and return a pointer to the internal RooArgSet holding its coordinates.

Implements RooAbsDataStore.

Definition at line 636 of file RooTreeDataStore.cxx.

◆ get() [3/3]

virtual const RooArgSet* RooAbsDataStore::get

◆ getBatch()

virtual std::vector<RooSpan<const double> > RooTreeDataStore::getBatch ( std::size_t  first,
std::size_t  last 
) const
inlinevirtual

Implements RooAbsDataStore.

Definition at line 71 of file RooTreeDataStore.h.

◆ getBranchBufferSize()

Int_t RooTreeDataStore::getBranchBufferSize ( ) const
inlineprivate

Definition at line 150 of file RooTreeDataStore.h.

◆ GetEntries()

Stat_t RooTreeDataStore::GetEntries ( ) const

Interface function to TTree::GetEntries.

Definition at line 1288 of file RooTreeDataStore.cxx.

◆ GetEntry()

Int_t RooTreeDataStore::GetEntry ( Int_t  entry = 0,
Int_t  getall = 0 
)

Interface function to TTree::GetEntry.

Definition at line 1315 of file RooTreeDataStore.cxx.

◆ initialize()

void RooTreeDataStore::initialize ( )
private

One-time initialization common to all constructor forms.

Attach variables of internal ArgSet to the corresponding TTree branches

Definition at line 395 of file RooTreeDataStore.cxx.

◆ isWeighted()

virtual Bool_t RooTreeDataStore::isWeighted ( ) const
inlinevirtual

Implements RooAbsDataStore.

Definition at line 69 of file RooTreeDataStore.h.

◆ loadValues() [1/2]

void RooTreeDataStore::loadValues ( const RooAbsDataStore tds,
const RooFormulaVar select = 0,
const char *  rangeName = 0,
std::size_t  nStart = 0,
std::size_t  nStop = std::numeric_limits<std::size_t>::max() 
)
virtual

Load values from dataset 't' into this data collection, optionally selecting events using 'select' RooFormulaVar.

Implements RooAbsDataStore.

Definition at line 540 of file RooTreeDataStore.cxx.

◆ loadValues() [2/2]

void RooTreeDataStore::loadValues ( const TTree t,
const RooFormulaVar select = 0,
const char *  rangeName = 0,
Int_t  nStart = 0,
Int_t  nStop = 2000000000 
)

Load values from tree 't' into this data collection, optionally selecting events using the RooFormulaVar 'select'.

The source tree 't' is cloned to not disturb its branch structure when retrieving information from it.

Definition at line 455 of file RooTreeDataStore.cxx.

◆ makeTreeName()

std::string RooTreeDataStore::makeTreeName ( ) const
private

Generate a name for the storage tree from the name and title of this instance.

Definition at line 1377 of file RooTreeDataStore.cxx.

◆ merge()

RooAbsDataStore * RooTreeDataStore::merge ( const RooArgSet allVars,
std::list< RooAbsDataStore * >  dstoreList 
)
virtual

Merge columns of supplied data set(s) with this data set.

All data sets must have equal number of entries. In case of duplicate columns the column of the last dataset in the list prevails

Implements RooAbsDataStore.

Definition at line 1022 of file RooTreeDataStore.cxx.

◆ numEntries()

Int_t RooTreeDataStore::numEntries ( ) const
virtual

Implements RooAbsDataStore.

Definition at line 1106 of file RooTreeDataStore.cxx.

◆ reset()

void RooTreeDataStore::reset ( )
virtual

Implements RooAbsDataStore.

Definition at line 1115 of file RooTreeDataStore.cxx.

◆ Reset()

void RooTreeDataStore::Reset ( Option_t option = 0)

Interface function to TTree::Reset.

Definition at line 1297 of file RooTreeDataStore.cxx.

◆ resetBuffers()

void RooTreeDataStore::resetBuffers ( )
virtual

Implements RooAbsDataStore.

Definition at line 1247 of file RooTreeDataStore.cxx.

◆ resetCache()

void RooTreeDataStore::resetCache ( )
virtual

Remove tree with values of cached observables and clear list of cached observables.

Implements RooAbsDataStore.

Definition at line 1207 of file RooTreeDataStore.cxx.

◆ restoreAlternateBuffers()

void RooTreeDataStore::restoreAlternateBuffers ( )

Definition at line 1260 of file RooTreeDataStore.cxx.

◆ row()

const RooArgSet& RooTreeDataStore::row ( )
inline

Definition at line 136 of file RooTreeDataStore.h.

◆ setArgStatus()

void RooTreeDataStore::setArgStatus ( const RooArgSet set,
Bool_t  active 
)
virtual

Activate or deactivate the branch status of the TTree branch associated with the given set of dataset observables.

Implements RooAbsDataStore.

Definition at line 1185 of file RooTreeDataStore.cxx.

◆ setBranchBufferSize()

void RooTreeDataStore::setBranchBufferSize ( Int_t  size)
inlineprivate

Definition at line 149 of file RooTreeDataStore.h.

◆ setExternalWeightArray()

void RooTreeDataStore::setExternalWeightArray ( const Double_t arrayWgt,
const Double_t arrayWgtErrLo,
const Double_t arrayWgtErrHi,
const Double_t arraySumW2 
)
inlinevirtual

Reimplemented from RooAbsDataStore.

Definition at line 128 of file RooTreeDataStore.h.

◆ sumEntries()

Double_t RooTreeDataStore::sumEntries ( ) const
virtual

Reimplemented from RooAbsDataStore.

Definition at line 1065 of file RooTreeDataStore.cxx.

◆ tree() [1/2]

TTree& RooTreeDataStore::tree ( )
inline

Definition at line 105 of file RooTreeDataStore.h.

◆ tree() [2/2]

virtual const TTree* RooTreeDataStore::tree ( ) const
inlinevirtual

Reimplemented from RooAbsDataStore.

Definition at line 106 of file RooTreeDataStore.h.

◆ valid()

Bool_t RooTreeDataStore::valid ( ) const
virtual

Return true if currently loaded coordinate is considered valid within the current range definitions of all observables.

Implements RooAbsDataStore.

Definition at line 613 of file RooTreeDataStore.cxx.

◆ varsNoWeight()

RooArgSet RooTreeDataStore::varsNoWeight ( const RooArgSet allVars,
const char *  wgtName = 0 
)
private

Utility function for constructors Return RooArgSet that is copy of allVars minus variable matching wgtName if specified.

Definition at line 274 of file RooTreeDataStore.cxx.

◆ weight() [1/2]

Double_t RooTreeDataStore::weight ( ) const
virtual

Return the weight of the n-th data point (n='index') in memory.

Implements RooAbsDataStore.

Definition at line 702 of file RooTreeDataStore.cxx.

◆ weight() [2/2]

Double_t RooTreeDataStore::weight ( Int_t  index) const
virtual

Return the weight of the n-th data point (n='index') in memory.

Implements RooAbsDataStore.

Definition at line 691 of file RooTreeDataStore.cxx.

◆ weightError() [1/2]

void RooTreeDataStore::weightError ( Double_t lo,
Double_t hi,
RooAbsData::ErrorType  etype = RooAbsData::Poisson 
) const
virtual

Implements RooAbsDataStore.

Definition at line 742 of file RooTreeDataStore.cxx.

◆ weightError() [2/2]

Double_t RooTreeDataStore::weightError ( RooAbsData::ErrorType  etype = RooAbsData::Poisson) const
virtual

Implements RooAbsDataStore.

Definition at line 710 of file RooTreeDataStore.cxx.

◆ weightVar()

RooRealVar * RooTreeDataStore::weightVar ( const RooArgSet allVars,
const char *  wgtName = 0 
)
private

Utility function for constructors Return pointer to weight variable if it is defined.

Definition at line 292 of file RooTreeDataStore.cxx.

Friends And Related Function Documentation

◆ RooVectorDataStore

friend class RooVectorDataStore
friend

Definition at line 140 of file RooTreeDataStore.h.

Member Data Documentation

◆ _attachedBuffers

RooArgSet RooTreeDataStore::_attachedBuffers
private

Definition at line 175 of file RooTreeDataStore.h.

◆ _cacheOwner

const RooAbsArg* RooTreeDataStore::_cacheOwner
private

TTree holding the cached function values.

Definition at line 159 of file RooTreeDataStore.h.

◆ _cacheTree

TTree* RooTreeDataStore::_cacheTree
private

Definition at line 158 of file RooTreeDataStore.h.

◆ _curWgt

Double_t RooTreeDataStore::_curWgt
mutableprivate

External sum of weights array.

Definition at line 170 of file RooTreeDataStore.h.

◆ _curWgtErr

Double_t RooTreeDataStore::_curWgtErr
mutableprivate

Definition at line 173 of file RooTreeDataStore.h.

◆ _curWgtErrHi

Double_t RooTreeDataStore::_curWgtErrHi
mutableprivate

Definition at line 172 of file RooTreeDataStore.h.

◆ _curWgtErrLo

Double_t RooTreeDataStore::_curWgtErrLo
mutableprivate

Definition at line 171 of file RooTreeDataStore.h.

◆ _defCtor

Bool_t RooTreeDataStore::_defCtor
mutableprivate

Object owning cache contents.

Definition at line 160 of file RooTreeDataStore.h.

◆ _defTreeBufSize

Int_t RooTreeDataStore::_defTreeBufSize = 10*1024*1024
staticprivate

Definition at line 154 of file RooTreeDataStore.h.

◆ _extSumW2Array

const Double_t* RooTreeDataStore::_extSumW2Array {nullptr}
private

External weight array - high error.

Definition at line 168 of file RooTreeDataStore.h.

◆ _extWgtArray

const Double_t* RooTreeDataStore::_extWgtArray {nullptr}
private

Definition at line 165 of file RooTreeDataStore.h.

◆ _extWgtErrHiArray

const Double_t* RooTreeDataStore::_extWgtErrHiArray {nullptr}
private

External weight array - low error.

Definition at line 167 of file RooTreeDataStore.h.

◆ _extWgtErrLoArray

const Double_t* RooTreeDataStore::_extWgtErrLoArray {nullptr}
private

External weight array.

Definition at line 166 of file RooTreeDataStore.h.

◆ _tree

TTree* RooTreeDataStore::_tree
private

Definition at line 157 of file RooTreeDataStore.h.

◆ _varsww

RooArgSet RooTreeDataStore::_varsww
private

Was object constructed with default ctor?

Definition at line 162 of file RooTreeDataStore.h.

◆ _wgtVar

RooRealVar* RooTreeDataStore::_wgtVar
private

Definition at line 163 of file RooTreeDataStore.h.

Libraries for RooTreeDataStore:
[legend]

The documentation for this class was generated from the following files:
RooAbsData::Tree
@ Tree
Definition: RooAbsData.h:237
RooAbsData::setDefaultStorageType
static void setDefaultStorageType(StorageType s)
Definition: RooAbsData.cxx:78
TFile
Definition: TFile.h:54
RooDataSet
Definition: RooDataSet.h:33