TNtuple Class Reference

A simple TTree restricted to a list of float variables only.

Each variable goes to a separate branch.

A Ntuple is created via

TNtuple(name,title,varlist,bufsize)

It is filled via:

TNtuple::Fill(*x)  or
TNtuple::Fill(v1,v2,v3.....)

Definition at line 28 of file TNtuple.h.

Public Member Functions
	TNtuple ()
	Default constructor for Ntuple.
	TNtuple (const char *name, const char *title, const char *varlist, Int_t bufsize=32000)
	Create an Ntuple.
virtual	~TNtuple ()
	Default destructor for an Ntuple.
virtual void	Browse (TBrowser *b)
	Browse content of the ntuple.
virtual TTree *	CloneTree (Long64_t nentries=-1, Option_t *option="")
	Create a clone of this tree and copy nentries.
virtual Int_t	Fill (const Float_t *x)
	Fill a Ntuple with an array of floats.
Int_t	Fill (Double_t x0)
virtual Int_t	Fill (Float_t x0, Float_t x1=0, Float_t x2=0, Float_t x3=0, Float_t x4=0, Float_t x5=0, Float_t x6=0, Float_t x7=0, Float_t x8=0, Float_t x9=0, Float_t x10=0, Float_t x11=0, Float_t x12=0, Float_t x13=0, Float_t x14=0)
	Fill a Ntuple: Each Ntuple item is an argument.
Int_t	Fill (Int_t x0)
Float_t *	GetArgs () const
virtual Int_t	GetNvar () const
virtual Long64_t	ReadStream (std::istream &inputStream, const char *branchDescriptor="", char delimiter=' ')
	Read from filename as many columns as variables in the ntuple the function returns the number of rows found in the file The second argument "branchDescriptor" is currently not used.
virtual void	ResetBranchAddress (TBranch *)
	Reset the branch addresses to the internal fArgs array.
void	ResetBranchAddresses ()
	Reset the branch addresses to the internal fArgs array.
Public Member Functions inherited from TTree
	TTree ()
	Default constructor and I/O constructor.
	TTree (const char *name, const char *title, Int_t splitlevel=99, TDirectory *dir=gDirectory)
	Normal tree constructor.
	TTree (const TTree &tt)=delete
virtual	~TTree ()
	Destructor.
void	AddAllocationCount (UInt_t count)
virtual Int_t	AddBranchToCache (const char *bname, Bool_t subbranches=kFALSE)
	Add branch with name bname to the Tree cache.
virtual Int_t	AddBranchToCache (TBranch *branch, Bool_t subbranches=kFALSE)
	Add branch b to the Tree cache.
void	AddClone (TTree *)
	Add a cloned tree to our list of trees to be notified whenever we change our branch addresses or when we are deleted.
virtual TFriendElement *	AddFriend (const char *treename, const char *filename="")
	Add a TFriendElement to the list of friends.
virtual TFriendElement *	AddFriend (const char *treename, TFile *file)
	Add a TFriendElement to the list of friends.
virtual TFriendElement *	AddFriend (TTree *tree, const char *alias="", Bool_t warn=kFALSE)
	Add a TFriendElement to the list of friends.
virtual void	AddTotBytes (Int_t tot)
virtual void	AddZipBytes (Int_t zip)
virtual Long64_t	AutoSave (Option_t *option="")
	AutoSave tree header every fAutoSave bytes.
virtual Int_t	Branch (const char *folder, Int_t bufsize=32000, Int_t splitlevel=99)
	Create one branch for each element in the folder.
TBranch *	Branch (const char *name, char *address, const char *leaflist, Int_t bufsize=32000)
template<class T >
TBranch *	Branch (const char *name, const char *classname, T **addobj, Int_t bufsize=32000, Int_t splitlevel=99)
template<class T >
TBranch *	Branch (const char *name, const char *classname, T *obj, Int_t bufsize=32000, Int_t splitlevel=99)
virtual TBranch *	Branch (const char *name, const char *classname, void *addobj, Int_t bufsize=32000, Int_t splitlevel=99)
	Create a new branch with the object of class classname at address addobj.
TBranch *	Branch (const char *name, int address, const char *leaflist, Int_t bufsize=32000)
TBranch *	Branch (const char *name, Longptr_t address, const char *leaflist, Int_t bufsize=32000)
template<typename T , std::size_t N>
TBranch *	Branch (const char *name, std::array< T, N > *obj, Int_t bufsize=32000, Int_t splitlevel=99)
template<class T >
TBranch *	Branch (const char *name, T **addobj, Int_t bufsize=32000, Int_t splitlevel=99)
	Add a new branch, and infer the data type from the array addobj being passed.
template<class T >
TBranch *	Branch (const char *name, T *obj, Int_t bufsize=32000, Int_t splitlevel=99)
	Add a new branch, and infer the data type from the type of obj being passed.
virtual TBranch *	Branch (const char *name, void *address, const char *leaflist, Int_t bufsize=32000)
	Create a new TTree Branch.
virtual Int_t	Branch (TCollection *list, Int_t bufsize=32000, Int_t splitlevel=99, const char *name="")
	Create one branch for each element in the collection.
virtual Int_t	Branch (TList *list, Int_t bufsize=32000, Int_t splitlevel=99)
	Deprecated function. Use next function instead.
virtual TBranch *	BranchOld (const char *name, const char *classname, void *addobj, Int_t bufsize=32000, Int_t splitlevel=1)
	Create a new TTree BranchObject.
virtual TBranch *	BranchRef ()
	Build the optional branch supporting the TRefTable.
virtual TBranch *	Bronch (const char *name, const char *classname, void *addobj, Int_t bufsize=32000, Int_t splitlevel=99)
	Create a new TTree BranchElement.
virtual Int_t	BuildIndex (const char *majorname, const char *minorname="0")
	Build a Tree Index (default is TTreeIndex).
TStreamerInfo *	BuildStreamerInfo (TClass *cl, void *pointer=0, Bool_t canOptimize=kTRUE)
	Build StreamerInfo for class cl.
virtual TFile *	ChangeFile (TFile *file)
	Called by TTree::Fill() when file has reached its maximum fgMaxTreeSize.
virtual void	CopyAddresses (TTree *, Bool_t undo=kFALSE)
	Set branch addresses of passed tree equal to ours.
virtual Long64_t	CopyEntries (TTree *tree, Long64_t nentries=-1, Option_t *option="", Bool_t needCopyAddresses=false)
	Copy nentries from given tree to this tree.
virtual TTree *	CopyTree (const char *selection, Option_t *option="", Long64_t nentries=kMaxEntries, Long64_t firstentry=0)
	Copy a tree with selection.
virtual TBasket *	CreateBasket (TBranch *)
	Create a basket for this tree and given branch.
Int_t	Debug () const
virtual void	Delete (Option_t *option="")
	Delete this tree from memory or/and disk.
virtual void	DirectoryAutoAdd (TDirectory *)
	Called by TKey and TObject::Clone to automatically add us to a directory when we are read from a file.
virtual Long64_t	Draw (const char *varexp, const char *selection, Option_t *option="", Long64_t nentries=kMaxEntries, Long64_t firstentry=0)
	Draw expression varexp for entries and objects that pass a (optional) selection.
virtual Long64_t	Draw (const char *varexp, const TCut &selection, Option_t *option="", Long64_t nentries=kMaxEntries, Long64_t firstentry=0)
	Draw expression varexp for specified entries.
virtual void	Draw (Option_t *opt)
	Default Draw method for all objects.
virtual void	DropBaskets ()
	Remove some baskets from memory.
virtual Int_t	DropBranchFromCache (const char *bname, Bool_t subbranches=kFALSE)
	Remove the branch with name 'bname' from the Tree cache.
virtual Int_t	DropBranchFromCache (TBranch *branch, Bool_t subbranches=kFALSE)
	Remove the branch b from the Tree cache.
virtual void	DropBuffers (Int_t nbytes)
	Drop branch buffers to accommodate nbytes below MaxVirtualsize.
Bool_t	EnableCache ()
	Enable the TTreeCache unless explicitly disabled for this TTree by a prior call to SetCacheSize(0).
virtual TBranch *	FindBranch (const char *name)
	Return the branch that correspond to the path 'branchname', which can include the name of the tree or the omitted name of the parent branches.
virtual TLeaf *	FindLeaf (const char *name)
	Find leaf..
virtual Int_t	Fit (const char *funcname, const char *varexp, const char *selection="", Option_t *option="", Option_t *goption="", Long64_t nentries=kMaxEntries, Long64_t firstentry=0)
	Fit a projected item(s) from a tree.
virtual Int_t	FlushBaskets (Bool_t create_cluster=true) const
	Write to disk all the basket that have not yet been individually written and create an event cluster boundary (by default).
virtual const char *	GetAlias (const char *aliasName) const
	Returns the expanded value of the alias. Search in the friends if any.
UInt_t	GetAllocationCount () const
virtual Long64_t	GetAutoFlush () const
virtual Long64_t	GetAutoSave () const
virtual TBranch *	GetBranch (const char *name)
	Return pointer to the branch with the given name in this tree or its friends.
virtual TBranchRef *	GetBranchRef () const
virtual Bool_t	GetBranchStatus (const char *branchname) const
	Return status of branch with name branchname.
virtual Long64_t	GetCacheSize () const
virtual Long64_t	GetChainEntryNumber (Long64_t entry) const
virtual Long64_t	GetChainOffset () const
virtual TClusterIterator	GetClusterIterator (Long64_t firstentry)
	Return an iterator over the cluster of baskets starting at firstentry.
virtual Bool_t	GetClusterPrefetch () const
TFile *	GetCurrentFile () const
	Return pointer to the current file.
Long64_t	GetDebugMax () const
Long64_t	GetDebugMin () const
Int_t	GetDefaultEntryOffsetLen () const
TDirectory *	GetDirectory () const
virtual Long64_t	GetEntries () const
virtual Long64_t	GetEntries (const char *selection)
	Return the number of entries matching the selection.
virtual Long64_t	GetEntriesFast () const
virtual Long64_t	GetEntriesFriend () const
	Return pointer to the 1st Leaf named name in any Branch of this Tree or any branch in the list of friend trees.
virtual Int_t	GetEntry (Long64_t entry, Int_t getall=0)
	Read all branches of entry and return total number of bytes read.
virtual TEntryList *	GetEntryList ()
	Returns the entry list assigned to this tree.
virtual Long64_t	GetEntryNumber (Long64_t entry) const
	Return entry number corresponding to entry.
virtual Long64_t	GetEntryNumberWithBestIndex (Long64_t major, Long64_t minor=0) const
	Return entry number corresponding to major and minor number.
virtual Long64_t	GetEntryNumberWithIndex (Long64_t major, Long64_t minor=0) const
	Return entry number corresponding to major and minor number.
virtual Int_t	GetEntryWithIndex (Int_t major, Int_t minor=0)
	Read entry corresponding to major and minor number.
virtual Long64_t	GetEstimate () const
Int_t	GetEvent (Long64_t entry, Int_t getall=0)
TEventList *	GetEventList () const
virtual Int_t	GetFileNumber () const
virtual TTree *	GetFriend (const char *) const
	Return a pointer to the TTree friend whose name or alias is friendname.
virtual const char *	GetFriendAlias (TTree *) const
	If the 'tree' is a friend, this method returns its alias name.
TH1 *	GetHistogram ()
virtual Bool_t	GetImplicitMT ()
virtual Int_t *	GetIndex ()
virtual Double_t *	GetIndexValues ()
ROOT::TIOFeatures	GetIOFeatures () const
	Returns the current set of IO settings.
virtual TIterator *	GetIteratorOnAllLeaves (Bool_t dir=kIterForward)
	Creates a new iterator that will go through all the leaves on the tree itself and its friend.
virtual TLeaf *	GetLeaf (const char *branchname, const char *leafname)
	Return pointer to the 1st Leaf named name in any Branch of this Tree or any branch in the list of friend trees.
virtual TLeaf *	GetLeaf (const char *name)
	Return pointer to first leaf named.
virtual TList *	GetListOfAliases () const
virtual TObjArray *	GetListOfBranches ()
virtual TList *	GetListOfClones ()
virtual TList *	GetListOfFriends () const
virtual TObjArray *	GetListOfLeaves ()
Int_t	GetMakeClass () const
virtual Long64_t	GetMaxEntryLoop () const
virtual Double_t	GetMaximum (const char *columname)
	Return maximum of column with name columname.
virtual Long64_t	GetMaxVirtualSize () const
virtual Double_t	GetMinimum (const char *columname)
	Return minimum of column with name columname.
virtual Int_t	GetNbranches ()
TObject *	GetNotify () const
virtual Int_t	GetPacketSize () const
virtual TVirtualPerfStats *	GetPerfStats () const
TVirtualTreePlayer *	GetPlayer ()
	Load the TTreePlayer (if not already done).
TTreeCache *	GetReadCache (TFile *file) const
	Find and return the TTreeCache registered with the file and which may contain branches for us.
TTreeCache *	GetReadCache (TFile *file, Bool_t create)
	Find and return the TTreeCache registered with the file and which may contain branches for us.
virtual Long64_t	GetReadEntry () const
virtual Long64_t	GetReadEvent () const
virtual Int_t	GetScanField () const
TTreeFormula *	GetSelect ()
virtual Long64_t	GetSelectedRows ()
Float_t	GetTargetMemoryRatio () const
virtual Int_t	GetTimerInterval () const
virtual Long64_t	GetTotBytes () const
TBuffer *	GetTransientBuffer (Int_t size)
	Returns the transient buffer currently used by this TTree for reading/writing baskets.
virtual TTree *	GetTree () const
virtual TVirtualIndex *	GetTreeIndex () const
virtual Int_t	GetTreeNumber () const
virtual Int_t	GetUpdate () const
virtual TList *	GetUserInfo ()
	Return a pointer to the list containing user objects associated to this tree.
virtual Double_t *	GetV1 ()
virtual Double_t *	GetV2 ()
virtual Double_t *	GetV3 ()
virtual Double_t *	GetV4 ()
virtual Double_t *	GetVal (Int_t i)
TTreeFormula *	GetVar (Int_t i)
TTreeFormula *	GetVar1 ()
TTreeFormula *	GetVar2 ()
TTreeFormula *	GetVar3 ()
TTreeFormula *	GetVar4 ()
virtual Double_t *	GetW ()
virtual Double_t	GetWeight () const
virtual Long64_t	GetZipBytes () const
virtual void	IncrementTotalBuffers (Int_t nbytes)
virtual Bool_t	InPlaceClone (TDirectory *newdirectory, const char *options="")
	Copy the content to a new new file, update this TTree with the new location information and attach this TTree to the new directory.
Bool_t	IsFolder () const
	Returns kTRUE in case object contains browsable objects (like containers or lists of other objects).
virtual Int_t	LoadBaskets (Long64_t maxmemory=2000000000)
	Read in memory all baskets from all branches up to the limit of maxmemory bytes.
virtual Long64_t	LoadTree (Long64_t entry)
	Set current entry.
virtual Long64_t	LoadTreeFriend (Long64_t entry, TTree *T)
	Load entry on behalf of our master tree, we may use an index.
virtual Int_t	MakeClass (const char *classname=0, Option_t *option="")
	Generate a skeleton analysis class for this tree.
virtual Int_t	MakeCode (const char *filename=0)
	Generate a skeleton function for this tree.
virtual Int_t	MakeProxy (const char *classname, const char *macrofilename=0, const char *cutfilename=0, const char *option=0, Int_t maxUnrolling=3)
	Generate a skeleton analysis class for this Tree using TBranchProxy.
virtual Int_t	MakeSelector (const char *selector=0, Option_t *option="")
	Generate skeleton selector class for this tree.
Bool_t	MemoryFull (Int_t nbytes)
	Check if adding nbytes to memory we are still below MaxVirtualsize.
virtual Long64_t	Merge (TCollection *list, Option_t *option="")
	Merge the trees in the TList into this tree.
virtual Long64_t	Merge (TCollection *list, TFileMergeInfo *info)
	Merge the trees in the TList into this tree.
virtual Bool_t	Notify ()
	Function called when loading a new class library.
TTree &	operator= (const TTree &tt)=delete
virtual void	OptimizeBaskets (ULong64_t maxMemory=10000000, Float_t minComp=1.1, Option_t *option="")
	This function may be called after having filled some entries in a Tree.
TPrincipal *	Principal (const char *varexp="", const char *selection="", Option_t *option="np", Long64_t nentries=kMaxEntries, Long64_t firstentry=0)
	Interface to the Principal Components Analysis class.
virtual void	Print (Option_t *option="") const
	Print a summary of the tree contents.
virtual void	PrintCacheStats (Option_t *option="") const
	Print statistics about the TreeCache for this tree.
virtual Long64_t	Process (const char *filename, Option_t *option="", Long64_t nentries=kMaxEntries, Long64_t firstentry=0)
	Process this tree executing the TSelector code in the specified filename.
virtual Long64_t	Process (TSelector *selector, Option_t *option="", Long64_t nentries=kMaxEntries, Long64_t firstentry=0)
	Process this tree executing the code in the specified selector.
virtual Long64_t	Project (const char *hname, const char *varexp, const char *selection="", Option_t *option="", Long64_t nentries=kMaxEntries, Long64_t firstentry=0)
	Make a projection of a tree using selections.
virtual TSQLResult *	Query (const char *varexp="", const char *selection="", Option_t *option="", Long64_t nentries=kMaxEntries, Long64_t firstentry=0)
	Loop over entries and return a TSQLResult object containing entries following selection.
virtual Long64_t	ReadFile (const char *filename, const char *branchDescriptor="", char delimiter=' ')
	Create or simply read branches from filename.
virtual void	RecursiveRemove (TObject *obj)
	Make sure that obj (which is being deleted or will soon be) is no longer referenced by this TTree.
virtual void	Refresh ()
	Refresh contents of this tree and its branches from the current status on disk.
virtual void	RegisterExternalFriend (TFriendElement *)
	Record a TFriendElement that we need to warn when the chain switches to a new file (typically this is because this chain is a friend of another TChain)
virtual void	RemoveExternalFriend (TFriendElement *)
	Removes external friend.
virtual void	RemoveFriend (TTree *)
	Remove a friend from the list of friends.
virtual void	Reset (Option_t *option="")
	Reset baskets, buffers and entries count in all branches and leaves.
virtual void	ResetAfterMerge (TFileMergeInfo *)
	Resets the state of this TTree after a merge (keep the customization but forget the data).
virtual Long64_t	Scan (const char *varexp="", const char *selection="", Option_t *option="", Long64_t nentries=kMaxEntries, Long64_t firstentry=0)
	Loop over tree entries and print entries passing selection.
virtual Bool_t	SetAlias (const char *aliasName, const char *aliasFormula)
	Set a tree variable alias.
virtual void	SetAutoFlush (Long64_t autof=-30000000)
	This function may be called at the start of a program to change the default value for fAutoFlush.
virtual void	SetAutoSave (Long64_t autos=-300000000)
	This function may be called at the start of a program to change the default value for fAutoSave (and for SetAutoSave) is -300000000, ie 300 MBytes.
virtual void	SetBasketSize (const char *bname, Int_t buffsize=16000)
	Set a branch's basket size.
template<class T >
Int_t	SetBranchAddress (const char *bname, T **add, TBranch **ptr=0)
template<class T >
Int_t	SetBranchAddress (const char *bname, T *add, TBranch **ptr=0)
virtual Int_t	SetBranchAddress (const char *bname, void *add, TBranch **ptr, TClass *realClass, EDataType datatype, Bool_t isptr)
	Verify the validity of the type of addr before calling SetBranchAddress.
virtual Int_t	SetBranchAddress (const char *bname, void *add, TBranch **ptr=0)
	Change branch address, dealing with clone trees properly.
virtual Int_t	SetBranchAddress (const char *bname, void *add, TClass *realClass, EDataType datatype, Bool_t isptr)
	Verify the validity of the type of addr before calling SetBranchAddress.
virtual void	SetBranchStatus (const char *bname, Bool_t status=1, UInt_t *found=0)
	Set branch status to Process or DoNotProcess.
virtual Int_t	SetCacheEntryRange (Long64_t first, Long64_t last)
	interface to TTreeCache to set the cache entry range
virtual void	SetCacheLearnEntries (Int_t n=10)
	Interface to TTreeCache to set the number of entries for the learning phase.
virtual Int_t	SetCacheSize (Long64_t cachesize=-1)
	Set maximum size of the file cache .
virtual void	SetChainOffset (Long64_t offset=0)
virtual void	SetCircular (Long64_t maxEntries)
	Enable/Disable circularity for this tree.
virtual void	SetClusterPrefetch (Bool_t enabled)
virtual void	SetDebug (Int_t level=1, Long64_t min=0, Long64_t max=9999999)
	Set the debug level and the debug range.
virtual void	SetDefaultEntryOffsetLen (Int_t newdefault, Bool_t updateExisting=kFALSE)
	Update the default value for the branch's fEntryOffsetLen.
virtual void	SetDirectory (TDirectory *dir)
	Change the tree's directory.
virtual Long64_t	SetEntries (Long64_t n=-1)
	Change number of entries in the tree.
virtual void	SetEntryList (TEntryList *list, Option_t *opt="")
	Set an EntryList.
virtual void	SetEstimate (Long64_t nentries=1000000)
	Set number of entries to estimate variable limits.
virtual void	SetEventList (TEventList *list)
	This function transfroms the given TEventList into a TEntryList The new TEntryList is owned by the TTree and gets deleted when the tree is deleted.
virtual void	SetFileNumber (Int_t number=0)
	Set fFileNumber to number.
virtual void	SetImplicitMT (Bool_t enabled)
ROOT::TIOFeatures	SetIOFeatures (const ROOT::TIOFeatures &)
	Provide the end-user with the ability to enable/disable various experimental IO features for this TTree.
virtual void	SetMakeClass (Int_t make)
	Set all the branches in this TTree to be in decomposed object mode (also known as MakeClass mode).
virtual void	SetMaxEntryLoop (Long64_t maxev=kMaxEntries)
virtual void	SetMaxVirtualSize (Long64_t size=0)
virtual void	SetName (const char *name)
	Change the name of this tree.
virtual void	SetNotify (TObject *obj)
	Sets the address of the object to be notified when the tree is loaded.
virtual void	SetObject (const char *name, const char *title)
	Change the name and title of this tree.
virtual void	SetParallelUnzip (Bool_t opt=kTRUE, Float_t RelSize=-1)
	Enable or disable parallel unzipping of Tree buffers.
virtual void	SetPerfStats (TVirtualPerfStats *perf)
	Set perf stats.
virtual void	SetScanField (Int_t n=50)
void	SetTargetMemoryRatio (Float_t ratio)
virtual void	SetTimerInterval (Int_t msec=333)
virtual void	SetTreeIndex (TVirtualIndex *index)
	The current TreeIndex is replaced by the new index.
virtual void	SetUpdate (Int_t freq=0)
virtual void	SetWeight (Double_t w=1, Option_t *option="")
	Set tree weight.
virtual void	Show (Long64_t entry=-1, Int_t lenmax=20)
	Print values of all active leaves for entry.
virtual void	StartViewer ()
	Start the TTreeViewer on this tree.
virtual Int_t	StopCacheLearningPhase ()
	Stop the cache learning phase.
virtual Int_t	UnbinnedFit (const char *funcname, const char *varexp, const char *selection="", Option_t *option="", Long64_t nentries=kMaxEntries, Long64_t firstentry=0)
	Unbinned fit of one or more variable(s) from a tree.
void	UseCurrentStyle ()
	Replace current attributes by current style.
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 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 TObject *	Clone (const char *newname="") const
	Make a clone of an object using the Streamer facility.
virtual Int_t	Compare (const TObject *obj) const
	Compare two TNamed objects.
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 Bool_t	IsSortable () const
virtual void	ls (Option_t *option="") const
	List TNamed name and title.
TNamed &	operator= (const TNamed &rhs)
	TNamed assignment operator.
virtual void	SetNameTitle (const char *name, const char *title)
	Set all the TNamed parameters (name and title).
virtual void	SetTitle (const char *title="")
	Set the title of the TNamed.
virtual Int_t	Sizeof () const
	Return size of the TNamed part of the TObject.
Public Member Functions inherited from TObject
	TObject ()
	TObject constructor.
	TObject (const TObject &object)
	TObject copy ctor.
virtual	~TObject ()
	TObject destructor.
void	AbstractMethod (const char *method) const
	Use this method to implement an "abstract" method that you don't want to leave purely abstract.
virtual void	AppendPad (Option_t *option="")
	Append graphics object to current pad.
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 Int_t	DistancetoPrimitive (Int_t px, Int_t py)
	Computes distance from point (px,py) to the object.
virtual void	DrawClass () const
	Draw class inheritance tree of the class to which this object belongs.
virtual TObject *	DrawClone (Option_t *option="") const
	Draw a clone of this object in the current selected pad for instance with: gROOT->SetSelectedPad(gPad).
virtual void	Dump () const
	Dump contents of object on stdout.
virtual void	Error (const char *method, const char *msgfmt,...) const
	Issue error message.
virtual void	Execute (const char *method, const char *params, Int_t *error=0)
	Execute method on this object with the given parameter string, e.g.
virtual void	Execute (TMethod *method, TObjArray *params, Int_t *error=0)
	Execute method on this object with parameters stored in the TObjArray.
virtual void	ExecuteEvent (Int_t event, Int_t px, Int_t py)
	Execute action corresponding to an event at (px,py).
virtual void	Fatal (const char *method, const char *msgfmt,...) const
	Issue fatal error message.
virtual TObject *	FindObject (const char *name) const
	Must be redefined in derived classes.
virtual TObject *	FindObject (const TObject *obj) const
	Must be redefined in derived classes.
virtual Option_t *	GetDrawOption () const
	Get option used by the graphics system to draw this object.
virtual const char *	GetIconName () const
	Returns mime type name of object.
virtual char *	GetObjectInfo (Int_t px, Int_t py) const
	Returns string containing info about the object at position (px,py).
virtual Option_t *	GetOption () const
virtual UInt_t	GetUniqueID () const
	Return the unique object id.
virtual Bool_t	HandleTimer (TTimer *timer)
	Execute action in response of a timer timing out.
Bool_t	HasInconsistentHash () const
	Return true is the type of this object is known to have an inconsistent setup for Hash and RecursiveRemove (i.e.
virtual void	Info (const char *method, const char *msgfmt,...) const
	Issue info message.
virtual Bool_t	InheritsFrom (const char *classname) const
	Returns kTRUE if object inherits from class "classname".
virtual Bool_t	InheritsFrom (const TClass *cl) const
	Returns kTRUE if object inherits from TClass cl.
virtual void	Inspect () const
	Dump contents of this object in a graphics canvas.
void	InvertBit (UInt_t f)
Bool_t	IsDestructed () const
	IsDestructed.
virtual Bool_t	IsEqual (const TObject *obj) const
	Default equal comparison (objects are equal if they have the same address in memory).
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).
void	Obsolete (const char *method, const char *asOfVers, const char *removedFromVers) const
	Use this method to declare a method obsolete.
void	operator delete (void *ptr)
	Operator delete.
void	operator delete[] (void *ptr)
	Operator delete [].
void *	operator new (size_t sz)
void *	operator new (size_t sz, void *vp)
void *	operator new[] (size_t sz)
void *	operator new[] (size_t sz, void *vp)
TObject &	operator= (const TObject &rhs)
	TObject assignment operator.
virtual void	Paint (Option_t *option="")
	This method must be overridden if a class wants to paint itself.
virtual void	Pop ()
	Pop on object drawn in a pad to the top of the display list.
virtual Int_t	Read (const char *name)
	Read contents of object with specified name from the current directory.
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	Warning (const char *method, const char *msgfmt,...) const
	Issue warning message.
Public Member Functions inherited from TAttLine
	TAttLine ()
	AttLine default constructor.
	TAttLine (Color_t lcolor, Style_t lstyle, Width_t lwidth)
	AttLine normal constructor.
virtual	~TAttLine ()
	AttLine destructor.
void	Copy (TAttLine &attline) const
	Copy this line attributes to a new TAttLine.
Int_t	DistancetoLine (Int_t px, Int_t py, Double_t xp1, Double_t yp1, Double_t xp2, Double_t yp2)
	Compute distance from point px,py to a line.
virtual Color_t	GetLineColor () const
	Return the line color.
virtual Style_t	GetLineStyle () const
	Return the line style.
virtual Width_t	GetLineWidth () const
	Return the line width.
virtual void	Modify ()
	Change current line attributes if necessary.
virtual void	ResetAttLine (Option_t *option="")
	Reset this line attributes to default values.
virtual void	SaveLineAttributes (std::ostream &out, const char *name, Int_t coldef=1, Int_t stydef=1, Int_t widdef=1)
	Save line attributes as C++ statement(s) on output stream out.
virtual void	SetLineAttributes ()
	Invoke the DialogCanvas Line attributes.
virtual void	SetLineColor (Color_t lcolor)
	Set the line color.
virtual void	SetLineColorAlpha (Color_t lcolor, Float_t lalpha)
	Set a transparent line color.
virtual void	SetLineStyle (Style_t lstyle)
	Set the line style.
virtual void	SetLineWidth (Width_t lwidth)
	Set the line width.
Public Member Functions inherited from TAttFill
	TAttFill ()
	AttFill default constructor.
	TAttFill (Color_t fcolor, Style_t fstyle)
	AttFill normal constructor.
virtual	~TAttFill ()
	AttFill destructor.
void	Copy (TAttFill &attfill) const
	Copy this fill attributes to a new TAttFill.
virtual Color_t	GetFillColor () const
	Return the fill area color.
virtual Style_t	GetFillStyle () const
	Return the fill area style.
virtual Bool_t	IsTransparent () const
virtual void	Modify ()
	Change current fill area attributes if necessary.
virtual void	ResetAttFill (Option_t *option="")
	Reset this fill attributes to default values.
virtual void	SaveFillAttributes (std::ostream &out, const char *name, Int_t coldef=1, Int_t stydef=1001)
	Save fill attributes as C++ statement(s) on output stream out.
virtual void	SetFillAttributes ()
	Invoke the DialogCanvas Fill attributes.
virtual void	SetFillColor (Color_t fcolor)
	Set the fill area color.
virtual void	SetFillColorAlpha (Color_t fcolor, Float_t falpha)
	Set a transparent fill color.
virtual void	SetFillStyle (Style_t fstyle)
	Set the fill area style.
Public Member Functions inherited from TAttMarker
	TAttMarker ()
	TAttMarker default constructor.
	TAttMarker (Color_t color, Style_t style, Size_t msize)
	TAttMarker normal constructor.
virtual	~TAttMarker ()
	TAttMarker destructor.
void	Copy (TAttMarker &attmarker) const
	Copy this marker attributes to a new TAttMarker.
virtual Color_t	GetMarkerColor () const
	Return the marker color.
virtual Size_t	GetMarkerSize () const
	Return the marker size.
virtual Style_t	GetMarkerStyle () const
	Return the marker style.
virtual void	Modify ()
	Change current marker attributes if necessary.
virtual void	ResetAttMarker (Option_t *toption="")
	Reset this marker attributes to the default values.
virtual void	SaveMarkerAttributes (std::ostream &out, const char *name, Int_t coldef=1, Int_t stydef=1, Int_t sizdef=1)
	Save line attributes as C++ statement(s) on output stream out.
virtual void	SetMarkerAttributes ()
	Invoke the DialogCanvas Marker attributes.
virtual void	SetMarkerColor (Color_t mcolor=1)
	Set the marker color.
virtual void	SetMarkerColorAlpha (Color_t mcolor, Float_t malpha)
	Set a transparent marker color.
virtual void	SetMarkerSize (Size_t msize=1)
	Set the marker size.
virtual void	SetMarkerStyle (Style_t mstyle=1)
	Set the marker style.

Protected Member Functions
virtual Int_t	Fill ()
	Fill a Ntuple with current values in fArgs.
Protected Member Functions inherited from TTree
virtual TBranch *	BranchImp (const char *branchname, const char *classname, TClass *ptrClass, void *addobj, Int_t bufsize, Int_t splitlevel)
	Same as TTree::Branch() with added check that addobj matches className.
virtual TBranch *	BranchImp (const char *branchname, TClass *ptrClass, void *addobj, Int_t bufsize, Int_t splitlevel)
	Same as TTree::Branch but automatic detection of the class name.
virtual TBranch *	BranchImpArr (const char *branchname, EDataType datatype, std::size_t N, void *addobj, Int_t bufsize, Int_t splitlevel)
virtual TBranch *	BranchImpRef (const char *branchname, const char *classname, TClass *ptrClass, void *addobj, Int_t bufsize, Int_t splitlevel)
	Same as TTree::Branch but automatic detection of the class name.
virtual TBranch *	BranchImpRef (const char *branchname, TClass *ptrClass, EDataType datatype, void *addobj, Int_t bufsize, Int_t splitlevel)
	Same as TTree::Branch but automatic detection of the class name.
virtual TBranch *	BronchExec (const char *name, const char *classname, void *addobj, Bool_t isptrptr, Int_t bufsize, Int_t splitlevel)
	Helper function implementing TTree::Bronch and TTree::Branch(const char *name, T &obj);.
virtual Int_t	CheckBranchAddressType (TBranch *branch, TClass *ptrClass, EDataType datatype, Bool_t ptr)
	Check whether or not the address described by the last 3 parameters matches the content of the branch.
Long64_t	GetCacheAutoSize (Bool_t withDefault=kFALSE)
	Used for automatic sizing of the cache.
virtual TLeaf *	GetLeafImpl (const char *branchname, const char *leafname)
	Return pointer to the 1st Leaf named name in any Branch of this Tree or any branch in the list of friend trees.
char	GetNewlineValue (std::istream &inputStream)
	Determine which newline this file is using.
void	ImportClusterRanges (TTree *fromtree)
	Appends the cluster range information stored in 'fromtree' to this tree, including the value of fAutoFlush.
virtual void	KeepCircular ()
	Keep a maximum of fMaxEntries in memory.
void	MoveReadCache (TFile *src, TDirectory *dir)
	Move a cache from a file to the current file in dir.
Int_t	SetBranchAddressImp (TBranch *branch, void *addr, TBranch **ptr)
	Change branch address, dealing with clone trees properly.
Int_t	SetCacheSizeAux (Bool_t autocache=kTRUE, Long64_t cacheSize=0)
	Set the size of the file cache and create it if possible.
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
Float_t *	fArgs
	! [fNvar] Array of variables
Int_t	fNvar
	Number of columns.
Protected Attributes inherited from TTree
TList *	fAliases
	List of aliases for expressions based on the tree branches.
std::atomic< UInt_t >	fAllocationCount {0}
	indicates basket should be resized to exact memory usage, but causes significant
Long64_t	fAutoFlush
	Auto-flush tree when fAutoFlush entries written or -fAutoFlush (compressed) bytes produced.
Long64_t	fAutoSave
	Autosave tree when fAutoSave entries written or -fAutoSave (compressed) bytes produced.
TObjArray	fBranches
	List of Branches.
TBranchRef *	fBranchRef
	Branch supporting the TRefTable (if any)
Bool_t	fCacheDoAutoInit
	! true if cache auto creation or resize check is needed
Bool_t	fCacheDoClusterPrefetch
	! true if cache is prefetching whole clusters
Long64_t	fCacheSize
	! Maximum size of file buffers
Bool_t	fCacheUserSet
	! true if the cache setting was explicitly given by user
Long64_t	fChainOffset
	! Offset of 1st entry of this Tree in a TChain
TList *	fClones
	! List of cloned trees which share our addresses
Long64_t *	fClusterRangeEnd
	[fNClusterRange] Last entry of a cluster range.
Long64_t *	fClusterSize
	[fNClusterRange] Number of entries in each cluster for a given range.
Int_t	fDebug
	! Debug level
Long64_t	fDebugMax
	! Last entry number to debug
Long64_t	fDebugMin
	! First entry number to debug
Int_t	fDefaultEntryOffsetLen
	Initial Length of fEntryOffset table in the basket buffers.
TDirectory *	fDirectory
	! Pointer to directory holding this tree
Long64_t	fEntries
	Number of entries.
TEntryList *	fEntryList
	! Pointer to event selection list (if one)
Long64_t	fEstimate
	Number of entries to estimate histogram limits.
TEventList *	fEventList
	! Pointer to event selection list (if one)
TList *	fExternalFriends
	! List of TFriendsElement pointing to us and need to be notified of LoadTree. Content not owned.
Int_t	fFileNumber
	! current file number (if file extensions)
Long64_t	fFlushedBytes
	Number of auto-flushed bytes.
UInt_t	fFriendLockStatus
	! Record which method is locking the friend recursion
TList *	fFriends
	pointer to list of friend elements
Bool_t	fIMTEnabled
	! true if implicit multi-threading is enabled for this tree
TArrayI	fIndex
	Index of sorted values.
TArrayD	fIndexValues
	Sorted index values.
TIOFeatures	fIOFeatures {0}
	IO features to define for newly-written baskets and branches.
TObjArray	fLeaves
	Direct pointers to individual branch leaves.
Int_t	fMakeClass
	! not zero when processing code generated by MakeClass
Int_t	fMaxClusterRange
	! Memory allocated for the cluster range.
Long64_t	fMaxEntries
	Maximum number of entries in case of circular buffers.
Long64_t	fMaxEntryLoop
	Maximum number of entries to process.
Long64_t	fMaxVirtualSize
	Maximum total size of buffers kept in memory.
Int_t	fNClusterRange
	Number of Cluster range in addition to the one defined by 'AutoFlush'.
UInt_t	fNEntriesSinceSorting
	! Number of entries processed since the last re-sorting of branches
Int_t	fNfill
	! Local for EntryLoop
TObject *	fNotify
	! Object to be notified when loading a Tree
Int_t	fPacketSize
	! Number of entries in one packet for parallel root
TVirtualPerfStats *	fPerfStats
	! pointer to the current perf stats object
TVirtualTreePlayer *	fPlayer
	! Pointer to current Tree player
Long64_t	fReadEntry
	! Number of the entry being processed
Long64_t	fSavedBytes
	Number of autosaved bytes.
Int_t	fScanField
	Number of runs before prompting in Scan.
std::vector< TBranch * >	fSeqBranches
	! Branches to be processed sequentially when IMT is on
std::vector< std::pair< Long64_t, TBranch * > >	fSortedBranches
	! Branches to be processed in parallel when IMT is on, sorted by average task time
Float_t	fTargetMemoryRatio {1.1f}
	! Ratio for memory usage in uncompressed buffers versus actual occupancy.
Int_t	fTimerInterval
	Timer interval in milliseconds.
std::atomic< Long64_t >	fTotalBuffers
	! Total number of bytes in branch buffers
Long64_t	fTotBytes
	Total number of bytes in all branches before compression.
TBuffer *	fTransientBuffer
	! Pointer to the current transient buffer.
TVirtualIndex *	fTreeIndex
	Pointer to the tree Index (if any)
Int_t	fUpdate
	Update frequency for EntryLoop.
TList *	fUserInfo
	pointer to a list of user objects associated to this Tree
Double_t	fWeight
	Tree weight (see TTree::SetWeight)
Long64_t	fZipBytes
	Total number of bytes in all branches after compression.
Protected Attributes inherited from TNamed
TString	fName
TString	fTitle
Protected Attributes inherited from TAttLine
Color_t	fLineColor
	Line color.
Style_t	fLineStyle
	Line style.
Width_t	fLineWidth
	Line width.
Protected Attributes inherited from TAttFill
Color_t	fFillColor
	Fill area color.
Style_t	fFillStyle
	Fill area style.
Protected Attributes inherited from TAttMarker
Color_t	fMarkerColor
	Marker color.
Size_t	fMarkerSize
	Marker size.
Style_t	fMarkerStyle
	Marker style.

Private Member Functions
	TNtuple (const TNtuple &)
TNtuple &	operator= (const TNtuple &)

Additional Inherited Members
Public Types inherited from TTree
enum	{ kSplitCollectionOfPointers = 100 }
enum	ESetBranchAddressStatus {   kMissingBranch = -5 , kInternalError = -4 , kMissingCompiledCollectionProxy = -3 , kMismatch = -2 ,   kClassMismatch = -1 , kMatch = 0 , kMatchConversion = 1 , kMatchConversionCollection = 2 ,   kMakeClass = 3 , kVoidPtr = 4 , kNoCheck = 5 , kNeedEnableDecomposedObj = BIT(29) ,   kNeedDisableDecomposedObj = BIT(30) , kDecomposedObjMask = kNeedEnableDecomposedObj | kNeedDisableDecomposedObj }
enum	EStatusBits { kForceRead = BIT(11) , kCircular = BIT(12) , kOnlyFlushAtCluster = BIT(14) , kEntriesReshuffled = BIT(19) }
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) }
Static Public Member Functions inherited from TTree
static Int_t	GetBranchStyle ()
	Static function returning the current branch style.
static Long64_t	GetMaxTreeSize ()
	Static function which returns the tree file size limit in bytes.
static TTree *	MergeTrees (TList *list, Option_t *option="")
	Static function merging the trees in the TList into a new tree.
static void	SetBranchStyle (Int_t style=1)
	Set the current branch style.
static void	SetMaxTreeSize (Long64_t maxsize=100000000000LL)
	Set the maximum size in bytes of a Tree file (static function).
Static Public Member Functions inherited from TObject
static Longptr_t	GetDtorOnly ()
	Return destructor only flag.
static Bool_t	GetObjectStat ()
	Get status of object stat flag.
static void	SetDtorOnly (void *obj)
	Set destructor only flag.
static void	SetObjectStat (Bool_t stat)
	Turn on/off tracking of objects in the TObjectTable.
Static Public Member Functions inherited from TAttMarker
static Width_t	GetMarkerLineWidth (Style_t style)
	Internal helper function that returns the line width of the given marker style (0 = filled marker)
static Style_t	GetMarkerStyleBase (Style_t style)
	Internal helper function that returns the corresponding marker style with line width 1 for the given style.
Static Public Attributes inherited from TTree
static constexpr Long64_t	kMaxEntries = TVirtualTreePlayer::kMaxEntries
Protected Types inherited from TTree
enum	ELockStatusBits {   kFindBranch = BIT(0) , kFindLeaf = BIT(1) , kGetAlias = BIT(2) , kGetBranch = BIT(3) ,   kGetEntry = BIT(4) , kGetEntryWithIndex = BIT(5) , kGetFriend = BIT(6) , kGetFriendAlias = BIT(7) ,   kGetLeaf = BIT(8) , kLoadTree = BIT(9) , kPrint = BIT(10) , kRemoveFriend = BIT(11) ,   kSetBranchStatus = BIT(12) }
Protected Types inherited from TObject
enum	{ kOnlyPrepStep = BIT(3) }
Static Protected Attributes inherited from TTree
static Int_t	fgBranchStyle = 1
	Old/New branch style.
static Long64_t	fgMaxTreeSize = 100000000000LL
	Maximum size of a file containing a Tree.

#include <TNtuple.h>

Inheritance diagram for TNtuple:

Constructor & Destructor Documentation

TNtuple() [1/3]

TNtuple::TNtuple ( const TNtuple &  )

private

TNtuple() [2/3]

TNtuple::TNtuple

(

)

Default constructor for Ntuple.

Definition at line 46 of file TNtuple.cxx.

TNtuple() [3/3]

TNtuple::TNtuple	(	const char *	name,
		const char *	title,
		const char *	varlist,
		Int_t	bufsize = 32000
	)

Create an Ntuple.

The parameter varlist describes the list of the ntuple variables separated by a colon:

Example: x:y:z:energy

For each variable in the list a separate branch is created.

NOTE:

• Use TTree to create branches with variables of different data types.
• Use TTree when the number of branches is large (> 100).

Definition at line 66 of file TNtuple.cxx.

~TNtuple()

TNtuple::~TNtuple ( )

virtual

Default destructor for an Ntuple.

Definition at line 103 of file TNtuple.cxx.

Member Function Documentation

Browse()

void TNtuple::Browse ( TBrowser *  b )

virtual

Browse content of the ntuple.

Reimplemented from TTree.

Definition at line 158 of file TNtuple.cxx.

CloneTree()

TTree * TNtuple::CloneTree ( Long64_t  nentries = -1, Option_t *  option = ""  )

virtual

Create a clone of this tree and copy nentries.

By default copy all entries. Note that only active branches are copied. The compression level of the cloned tree is set to the destination file's compression level.

See TTree::CloneTree for more details.

Reimplemented from TTree.

Definition at line 119 of file TNtuple.cxx.

Fill() [1/5]

Int_t TNtuple::Fill ( )

protectedvirtual

Fill a Ntuple with current values in fArgs.

Note that this function is protected. Currently called only by TChain::Merge

Reimplemented from TTree.

Definition at line 169 of file TNtuple.cxx.

Fill() [2/5]

Int_t TNtuple::Fill ( const Float_t *  x )

virtual

Fill a Ntuple with an array of floats.

Definition at line 177 of file TNtuple.cxx.

Fill() [3/5]

Int_t TNtuple::Fill ( Double_t  x0 )

inline

Definition at line 49 of file TNtuple.h.

Fill() [4/5]

Int_t TNtuple::Fill ( Float_t  x0, Float_t  x1 = 0, Float_t  x2 = 0, Float_t  x3 = 0, Float_t  x4 = 0, Float_t  x5 = 0, Float_t  x6 = 0, Float_t  x7 = 0, Float_t  x8 = 0, Float_t  x9 = 0, Float_t  x10 = 0, Float_t  x11 = 0, Float_t  x12 = 0, Float_t  x13 = 0, Float_t  x14 = 0  )

virtual

Fill a Ntuple: Each Ntuple item is an argument.

Definition at line 191 of file TNtuple.cxx.

Fill() [5/5]

Int_t TNtuple::Fill ( Int_t  x0 )

inline

Definition at line 48 of file TNtuple.h.

GetArgs()

Float_t * TNtuple::GetArgs ( ) const

inline

Definition at line 56 of file TNtuple.h.

GetNvar()

virtual Int_t TNtuple::GetNvar ( ) const

inlinevirtual

Definition at line 55 of file TNtuple.h.

operator=()

TNtuple & TNtuple::operator= ( const TNtuple &  )

private

ReadStream()

Long64_t TNtuple::ReadStream ( std::istream &  inputStream, const char *  branchDescriptor = "", char  delimiter = ' '  )

virtual

Read from filename as many columns as variables in the ntuple the function returns the number of rows found in the file The second argument "branchDescriptor" is currently not used.

Lines in the input file starting with "#" are ignored.

Reimplemented from TTree.

Definition at line 220 of file TNtuple.cxx.

ResetBranchAddress()

void TNtuple::ResetBranchAddress ( TBranch *  branch )

virtual

Reset the branch addresses to the internal fArgs array.

Use this method when the addresses were changed via calls to SetBranchAddress().

Reimplemented from TTree.

Definition at line 133 of file TNtuple.cxx.

ResetBranchAddresses()

void TNtuple::ResetBranchAddresses ( )

virtual

Reset the branch addresses to the internal fArgs array.

Use this method when the addresses were changed via calls to SetBranchAddress().

Reimplemented from TTree.

Definition at line 147 of file TNtuple.cxx.

Member Data Documentation

fArgs

Float_t* TNtuple::fArgs

protected

! [fNvar] Array of variables

Definition at line 32 of file TNtuple.h.

fNvar

Int_t TNtuple::fNvar

protected

Number of columns.

Definition at line 31 of file TNtuple.h.

Libraries for TNtuple:

---

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

• tree/tree/inc/TNtuple.h
• tree/tree/src/TNtuple.cxx