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

Each variable goes to a separate branch.

A Ntuple is created via

It is filled via:

TNtuple::Fill(v1,v2,v3.....)

Definition at line 30 of file TNtuple.h.

Public Member Functions
	TNtuple ()

	TNtuple (const char name, const char title, const char *varlist, Int_t bufsize=32000)
	Create an Ntuple. More...

virtual	~TNtuple ()
	Default destructor for an Ntuple. More...

virtual void	Browse (TBrowser *b)
	Browse content of the ntuple. More...

virtual TTree *	CloneTree (Long64_t nentries=-1, Option_t *option="")
	Create a clone of this tree and copy nentries. More...

virtual Int_t	Fill (const Float_t *x)
	Fill a Ntuple with an array of floats. More...

Int_t	Fill (Int_t x0)

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. More...

virtual Int_t	GetNvar () const

Float_t *	GetArgs () 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. More...

virtual void	ResetBranchAddress (TBranch *)
	Reset the branch addresses to the internal fArgs array. More...

void	ResetBranchAddresses ()
	Reset the branch addresses to the internal fArgs array. More...

	ClassDef (TNtuple, 2)

Public Member Functions inherited from TTree
	TTree ()
	Default constructor and I/O constructor. More...

	TTree (const char name, const char title, Int_t splitlevel=99)
	Normal tree constructor. More...

virtual	~TTree ()
	Destructor. More...

virtual Int_t	AddBranchToCache (const char *bname, Bool_t subbranches=kFALSE)
	Add branch with name bname to the Tree cache. More...

virtual Int_t	AddBranchToCache (TBranch *branch, Bool_t subbranches=kFALSE)
	Add branch b to the Tree cache. More...

virtual Int_t	DropBranchFromCache (const char *bname, Bool_t subbranches=kFALSE)
	Remove the branch with name 'bname' from the Tree cache. More...

virtual Int_t	DropBranchFromCache (TBranch *branch, Bool_t subbranches=kFALSE)
	Remove the branch b from the Tree cache. More...

virtual TFriendElement *	AddFriend (const char treename, const char filename="")
	Add a TFriendElement to the list of friends. More...

virtual TFriendElement *	AddFriend (const char treename, TFile file)
	Add a TFriendElement to the list of friends. More...

virtual TFriendElement *	AddFriend (TTree tree, const char alias="", Bool_t warn=kFALSE)
	Add a TFriendElement to the list of friends. More...

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. More...

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. More...

virtual Int_t	Branch (TList *list, Int_t bufsize=32000, Int_t splitlevel=99)
	Deprecated function. Use next function instead. More...

virtual Int_t	Branch (const char *folder, Int_t bufsize=32000, Int_t splitlevel=99)
	Create one branch for each element in the folder. More...

virtual TBranch *	Branch (const char name, void address, const char *leaflist, Int_t bufsize=32000)
	Create a new TTree Branch. More...

TBranch *	Branch (const char name, char address, const char *leaflist, Int_t bufsize=32000)

TBranch *	Branch (const char name, Long_t address, const char leaflist, Int_t bufsize=32000)

TBranch *	Branch (const char name, int address, const char leaflist, Int_t bufsize=32000)

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. More...

template<class T >
TBranch *	Branch (const char name, const char classname, T *obj, Int_t bufsize=32000, Int_t splitlevel=99)

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, T *addobj, Int_t bufsize=32000, Int_t splitlevel=99)

template<class T >
TBranch *	Branch (const char name, T obj, Int_t bufsize=32000, Int_t splitlevel=99)

virtual TBranch *	Bronch (const char name, const char classname, void *addobj, Int_t bufsize=32000, Int_t splitlevel=99)
	Create a new TTree BranchElement. More...

virtual TBranch *	BranchOld (const char name, const char classname, void *addobj, Int_t bufsize=32000, Int_t splitlevel=1)
	Create a new TTree BranchObject. More...

virtual TBranch *	BranchRef ()
	Build the optional branch supporting the TRefTable. More...

virtual Int_t	BuildIndex (const char majorname, const char minorname="0")
	Build a Tree Index (default is TTreeIndex). More...

TStreamerInfo *	BuildStreamerInfo (TClass cl, void pointer=0, Bool_t canOptimize=kTRUE)
	Build StreamerInfo for class cl. More...

virtual TFile *	ChangeFile (TFile *file)
	Called by TTree::Fill() when file has reached its maximum fgMaxTreeSize. More...

virtual void	CopyAddresses (TTree *, Bool_t undo=kFALSE)
	Set branch addresses of passed tree equal to ours. More...

virtual Long64_t	CopyEntries (TTree tree, Long64_t nentries=-1, Option_t option="")
	Copy nentries from given tree to this tree. More...

virtual TTree *	CopyTree (const char selection, Option_t option="", Long64_t nentries=kMaxEntries, Long64_t firstentry=0)
	Copy a tree with selection. More...

virtual TBasket *	CreateBasket (TBranch *)
	Create a basket for this tree and given branch. More...

virtual void	DirectoryAutoAdd (TDirectory *)
	Called by TKey and TObject::Clone to automatically add us to a directory when we are read from a file. More...

Int_t	Debug () const

virtual void	Delete (Option_t *option="")
	Delete this tree from memory or/and disk. More...

virtual void	Draw (Option_t *opt)
	Default Draw method for all objects. More...

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. More...

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 specified entries. More...

virtual void	DropBaskets ()
	Remove some baskets from memory. More...

virtual void	DropBuffers (Int_t nbytes)
	Drop branch buffers to accommodate nbytes below MaxVirtualsize. More...

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. More...

virtual TLeaf *	FindLeaf (const char *name)
	Find leaf.. More...

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. More...

virtual Int_t	FlushBaskets () const
	Write to disk all the basket that have not yet been individually written. More...

virtual const char *	GetAlias (const char *aliasName) const
	Returns the expanded value of the alias. Search in the friends if any. More...

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. More...

virtual TBranchRef *	GetBranchRef () const

virtual Bool_t	GetBranchStatus (const char *branchname) const
	Return status of branch with name branchname. More...

virtual Long64_t	GetCacheSize () const

virtual TClusterIterator	GetClusterIterator (Long64_t firstentry)
	Return an iterator over the cluster of baskets starting at firstentry. More...

virtual Long64_t	GetChainEntryNumber (Long64_t entry) const

virtual Long64_t	GetChainOffset () const

TFile *	GetCurrentFile () const
	Return pointer to the current file. More...

Int_t	GetDefaultEntryOffsetLen () const

Long64_t	GetDebugMax () const

Long64_t	GetDebugMin () const

TDirectory *	GetDirectory () const

virtual Long64_t	GetEntries () const

virtual Long64_t	GetEntries (const char *selection)
	Return the number of entries matching the selection. More...

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. More...

virtual Long64_t	GetEstimate () const

virtual Int_t	GetEntry (Long64_t entry=0, Int_t getall=0)
	Read all branches of entry and return total number of bytes read. More...

Int_t	GetEvent (Long64_t entry=0, Int_t getall=0)

virtual Int_t	GetEntryWithIndex (Int_t major, Int_t minor=0)
	Read entry corresponding to major and minor number. More...

virtual Long64_t	GetEntryNumberWithBestIndex (Long64_t major, Long64_t minor=0) const
	Return entry number corresponding to major and minor number. More...

virtual Long64_t	GetEntryNumberWithIndex (Long64_t major, Long64_t minor=0) const
	Return entry number corresponding to major and minor number. More...

TEventList *	GetEventList () const

virtual TEntryList *	GetEntryList ()
	Returns the entry list, set to this tree. More...

virtual Long64_t	GetEntryNumber (Long64_t entry) const
	Return entry number corresponding to entry. More...

virtual Int_t	GetFileNumber () const

virtual TTree *	GetFriend (const char *) const
	Return a pointer to the TTree friend whose name or alias is 'friendname. More...

virtual const char *	GetFriendAlias (TTree *) const
	If the 'tree' is a friend, this method returns its alias name. More...

TH1 *	GetHistogram ()

virtual Int_t *	GetIndex ()

virtual Double_t *	GetIndexValues ()

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. More...

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. More...

virtual TLeaf *	GetLeaf (const char *name)
	Return pointer to the 1st Leaf named name in any Branch of this Tree or any branch in the list of friend trees. More...

virtual TList *	GetListOfClones ()

virtual TObjArray *	GetListOfBranches ()

virtual TObjArray *	GetListOfLeaves ()

virtual TList *	GetListOfFriends () const

virtual TList *	GetListOfAliases () const

Int_t	GetMakeClass () const

virtual Long64_t	GetMaxEntryLoop () const

virtual Double_t	GetMaximum (const char *columname)
	Return maximum of column with name columname. More...

virtual Long64_t	GetMaxVirtualSize () const

virtual Double_t	GetMinimum (const char *columname)
	Return minimum of column with name columname. More...

virtual Int_t	GetNbranches ()

TObject *	GetNotify () const

TVirtualTreePlayer *	GetPlayer ()
	Load the TTreePlayer (if not already done). More...

virtual Int_t	GetPacketSize () const

virtual TVirtualPerfStats *	GetPerfStats () const

virtual Long64_t	GetReadEntry () const

virtual Long64_t	GetReadEvent () const

virtual Int_t	GetScanField () const

TTreeFormula *	GetSelect ()

virtual Long64_t	GetSelectedRows ()

virtual Int_t	GetTimerInterval () const

TBuffer *	GetTransientBuffer (Int_t size)
	Returns the transient buffer currently used by this TTree for reading/writing baskets. More...

virtual Long64_t	GetTotBytes () const

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. More...

TTreeFormula *	GetVar (Int_t i)

TTreeFormula *	GetVar1 ()

TTreeFormula *	GetVar2 ()

TTreeFormula *	GetVar3 ()

TTreeFormula *	GetVar4 ()

virtual Double_t *	GetVal (Int_t i)

virtual Double_t *	GetV1 ()

virtual Double_t *	GetV2 ()

virtual Double_t *	GetV3 ()

virtual Double_t *	GetV4 ()

virtual Double_t *	GetW ()

virtual Double_t	GetWeight () const

virtual Long64_t	GetZipBytes () const

virtual void	IncrementTotalBuffers (Int_t nbytes)

Bool_t	IsFolder () const
	Returns kTRUE in case object contains browsable objects (like containers or lists of other objects). More...

virtual Int_t	LoadBaskets (Long64_t maxmemory=2000000000)
	Read in memory all baskets from all branches up to the limit of maxmemory bytes. More...

virtual Long64_t	LoadTree (Long64_t entry)
	Set current entry. More...

virtual Long64_t	LoadTreeFriend (Long64_t entry, TTree *T)
	Load entry on behalf of our master tree, we may use an index. More...

virtual Int_t	MakeClass (const char classname=0, Option_t option="")
	Generate a skeleton analysis class for this tree. More...

virtual Int_t	MakeCode (const char *filename=0)
	Generate a skeleton function for this tree. More...

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. More...

virtual Int_t	MakeSelector (const char selector=0, Option_t option="")
	Generate skeleton selector class for this tree. More...

Bool_t	MemoryFull (Int_t nbytes)
	Check if adding nbytes to memory we are still below MaxVirtualsize. More...

virtual Long64_t	Merge (TCollection list, Option_t option="")
	Merge the trees in the TList into this tree. More...

virtual Long64_t	Merge (TCollection list, TFileMergeInfo info)
	Merge the trees in the TList into this tree. More...

virtual Bool_t	Notify ()
	Function called when loading a new class library. More...

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 Using the information in the existing branch buffers, it will reassign new branch buffer sizes to optimize time and memory. More...

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. More...

virtual void	Print (Option_t *option="") const
	Print a summary of the tree contents. More...

virtual void	PrintCacheStats (Option_t *option="") const
	print statistics about the TreeCache for this tree, like ****TreeCache statistics for file: cms2.root **** Reading 73921562 bytes in 716 transactions Average transaction = 103.242405 Kbytes Number of blocks in current cache: 202, total size : 6001193 if option = "a" the list of blocks in the cache is printed More...

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. More...

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. More...

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. More...

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. More...

virtual Long64_t	ReadFile (const char filename, const char branchDescriptor="", char delimiter= ' ')
	Create or simply read branches from filename. More...

virtual void	Refresh ()
	Refresh contents of this tree and its branches from the current status on disk. More...

virtual void	RecursiveRemove (TObject *obj)
	Make sure that obj (which is being deleted or will soon be) is no longer referenced by this TTree. More...

virtual void	RemoveFriend (TTree *)
	Remove a friend from the list of friends. More...

virtual void	Reset (Option_t *option="")
	Reset baskets, buffers and entries count in all branches and leaves. More...

virtual void	ResetAfterMerge (TFileMergeInfo *)
	Resets the state of this TTree after a merge (keep the customization but forget the data). More...

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. More...

virtual Bool_t	SetAlias (const char aliasName, const char aliasFormula)
	Set a tree variable alias. More...

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 When filling the Tree the branch buffers as well as the Tree header will be flushed to disk when the watermark is reached. More...

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. More...

virtual void	SetBasketSize (const char *bname, Int_t buffsize=16000)
	Set a branch's basket size. More...

virtual Int_t	SetBranchAddress (const char bname, void add, TBranch **ptr=0)
	Change branch address, dealing with clone trees properly. More...

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. More...

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. More...

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 void	SetBranchStatus (const char bname, Bool_t status=1, UInt_t found=0)
	Set branch status to Process or DoNotProcess. More...

virtual Int_t	SetCacheSize (Long64_t cachesize=-1)
	Set maximum size of the file cache . More...

virtual Int_t	SetCacheEntryRange (Long64_t first, Long64_t last)
	interface to TTreeCache to set the cache entry range More...

virtual void	SetCacheLearnEntries (Int_t n=10)
	Interface to TTreeCache to set the number of entries for the learning phase. More...

virtual void	SetChainOffset (Long64_t offset=0)

virtual void	SetCircular (Long64_t maxEntries)
	Enable/Disable circularity for this tree. More...

virtual void	SetDebug (Int_t level=1, Long64_t min=0, Long64_t max=9999999)
	Set the debug level and the debug range. More...

virtual void	SetDefaultEntryOffsetLen (Int_t newdefault, Bool_t updateExisting=kFALSE)
	Update the default value for the branch's fEntryOffsetLen. More...

virtual void	SetDirectory (TDirectory *dir)
	Change the tree's directory. More...

virtual Long64_t	SetEntries (Long64_t n=-1)
	Change number of entries in the tree. More...

virtual void	SetEstimate (Long64_t nentries=1000000)
	Set number of entries to estimate variable limits. More...

virtual void	SetFileNumber (Int_t number=0)
	Set fFileNumber to number. More...

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. More...

virtual void	SetEntryList (TEntryList list, Option_t opt="")
	Set an EntryList. More...

virtual void	SetMakeClass (Int_t make)
	Set all the branches in this TTree to be in decomposed object mode (also known as MakeClass mode). More...

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. More...

virtual void	SetNotify (TObject *obj)

virtual void	SetObject (const char name, const char title)
	Change the name and title of this tree. More...

virtual void	SetParallelUnzip (Bool_t opt=kTRUE, Float_t RelSize=-1)
	Enable or disable parallel unzipping of Tree buffers. More...

virtual void	SetPerfStats (TVirtualPerfStats *perf)
	Set perf stats. More...

virtual void	SetScanField (Int_t n=50)

virtual void	SetTimerInterval (Int_t msec=333)

virtual void	SetTreeIndex (TVirtualIndex *index)
	The current TreeIndex is replaced by the new index. More...

virtual void	SetWeight (Double_t w=1, Option_t *option="")
	Set tree weight. More...

virtual void	SetUpdate (Int_t freq=0)

virtual void	Show (Long64_t entry=-1, Int_t lenmax=20)
	Print values of all active leaves for entry. More...

virtual void	StartViewer ()
	Start the TTreeViewer on this tree. More...

virtual Int_t	StopCacheLearningPhase ()
	Stop the cache learning phase. More...

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. More...

void	UseCurrentStyle ()
	Replace current attributes by current style. 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 TNamed
	TNamed ()

	TNamed (const char name, const char title)

	TNamed (const TString &name, const TString &title)

	TNamed (const TNamed &named)

TNamed &	operator= (const TNamed &rhs)
	TNamed assignment operator. More...

virtual	~TNamed ()

virtual void	Clear (Option_t *option="")
	Set name and title to empty strings (""). More...

virtual TObject *	Clone (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	SetNameTitle (const char name, const char title)
	Change (i.e. set) all the TNamed parameters (name and title). More...

virtual void	SetTitle (const char *title="")
	Change (i.e. set) the title of the TNamed. More...

virtual void	ls (Option_t *option="") const
	List TNamed name and title. More...

virtual Int_t	Sizeof () const
	Return size of the TNamed part of the TObject. More...

Public Member Functions inherited from TObject
	TObject ()

	TObject (const TObject &object)
	TObject copy ctor. More...

TObject &	operator= (const TObject &rhs)
	TObject assignment operator. More...

virtual	~TObject ()
	TObject destructor. More...

virtual void	AppendPad (Option_t *option="")
	Append graphics object to current pad. More...

virtual const char *	ClassName () const
	Returns name of class to which the object belongs. 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 TObject *	DrawClone (Option_t *option="") const
	Draw a clone of this object in the current pad. More...

virtual void	Dump () const
	Dump contents of object on stdout. 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 TObject *	FindObject (const char *name) const
	Must be redefined in derived classes. More...

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

virtual Option_t *	GetDrawOption () const
	Get option used by the graphics system to draw this object. More...

virtual UInt_t	GetUniqueID () const
	Return the unique object id. More...

virtual const char *	GetIconName () const
	Returns mime type name of object. More...

virtual Option_t *	GetOption () const

virtual char *	GetObjectInfo (Int_t px, Int_t py) const
	Returns string containing info about the object at position (px,py). More...

virtual Bool_t	HandleTimer (TTimer *timer)
	Execute action in response of a timer timing out. 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...

virtual Bool_t	IsEqual (const TObject *obj) const
	Default equal comparison (objects are equal if they have the same address in memory). More...

Bool_t	IsOnHeap () const

Bool_t	IsZombie () const

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	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...

virtual void	SetDrawOption (Option_t *option="")
	Set drawing option for object. More...

virtual void	SetUniqueID (UInt_t uid)
	Set the unique object id. More...

void *	operator new (size_t sz)

void *	operator new[] (size_t sz)

void *	operator new (size_t sz, void *vp)

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

void	operator delete (void *ptr)
	Operator delete. More...

void	operator delete[] (void *ptr)
	Operator delete []. More...

void	SetBit (UInt_t f, Bool_t set)
	Set or unset the user status bits as specified in f. More...

void	SetBit (UInt_t f)

void	ResetBit (UInt_t f)

Bool_t	TestBit (UInt_t f) const

Int_t	TestBits (UInt_t f) const

void	InvertBit (UInt_t f)

virtual void	Info (const char method, const char msgfmt,...) const
	Issue info message. More...

virtual void	Warning (const char method, const char msgfmt,...) const
	Issue warning message. More...

virtual void	Error (const char method, const char msgfmt,...) const
	Issue error message. More...

virtual void	SysError (const char method, const char msgfmt,...) const
	Issue system error message. More...

virtual void	Fatal (const char method, const char msgfmt,...) const
	Issue fatal error message. 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...

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...

void	Obsolete (const char method, const char asOfVers, const char *removedFromVers) const
	Use this method to declare a method obsolete. More...

Public Member Functions inherited from TAttLine
	TAttLine ()
	AttLine default constructor. More...

	TAttLine (Color_t lcolor, Style_t lstyle, Width_t lwidth)
	AttLine normal constructor. More...

virtual	~TAttLine ()
	AttLine destructor. More...

void	Copy (TAttLine &attline) const
	Copy this line attributes to a new TAttLine. More...

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. More...

virtual Color_t	GetLineColor () const

virtual Style_t	GetLineStyle () const

virtual Width_t	GetLineWidth () const

virtual void	Modify ()
	Change current line attributes if necessary. More...

virtual void	ResetAttLine (Option_t *option="")
	Reset this line attributes to default values. More...

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. More...

virtual void	SetLineAttributes ()
	Invoke the DialogCanvas Line attributes. More...

virtual void	SetLineColor (Color_t lcolor)

virtual void	SetLineColorAlpha (Color_t lcolor, Float_t lalpha)
	Set a transparent line color. More...

virtual void	SetLineStyle (Style_t lstyle)

virtual void	SetLineWidth (Width_t lwidth)

	ClassDef (TAttLine, 2)

Public Member Functions inherited from TAttFill
	TAttFill ()

	TAttFill (Color_t fcolor, Style_t fstyle)
	AttFill normal constructor. More...

virtual	~TAttFill ()
	AttFill destructor. More...

void	Copy (TAttFill &attfill) const
	Copy this fill attributes to a new TAttFill. More...

virtual Color_t	GetFillColor () const

virtual Style_t	GetFillStyle () const

virtual Bool_t	IsTransparent () const

virtual void	Modify ()
	Change current fill area attributes if necessary. More...

virtual void	ResetAttFill (Option_t *option="")
	Reset this fill attributes to default values. More...

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. More...

virtual void	SetFillAttributes ()
	Invoke the DialogCanvas Fill attributes. More...

virtual void	SetFillColor (Color_t fcolor)

virtual void	SetFillColorAlpha (Color_t fcolor, Float_t falpha)
	Set a transparent fill color. More...

virtual void	SetFillStyle (Style_t fstyle)

Public Member Functions inherited from TAttMarker
	TAttMarker ()

	TAttMarker (Color_t color, Style_t style, Size_t msize)
	TAttMarker normal constructor. More...

virtual	~TAttMarker ()
	TAttMarker destructor. More...

void	Copy (TAttMarker &attmarker) const
	Copy this marker attributes to a new TAttMarker. More...

virtual Color_t	GetMarkerColor () const

virtual Style_t	GetMarkerStyle () const

virtual Size_t	GetMarkerSize () const

virtual void	Modify ()
	Change current marker attributes if necessary. More...

virtual void	ResetAttMarker (Option_t *toption="")
	Reset this marker attributes to the default values. More...

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. More...

virtual void	SetMarkerAttributes ()
	Invoke the DialogCanvas Marker attributes. More...

virtual void	SetMarkerColor (Color_t mcolor=1)

virtual void	SetMarkerColorAlpha (Color_t mcolor, Float_t malpha)
	Set a transparent marker color. More...

virtual void	SetMarkerStyle (Style_t mstyle=1)

virtual void	SetMarkerSize (Size_t msize=1)

	ClassDef (TAttMarker, 2)

Protected Member Functions
virtual Int_t	Fill ()
	[fNvar] Array of variables More...

Protected Member Functions inherited from TTree
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. More...

virtual void	KeepCircular ()
	Keep a maximum of fMaxEntries in memory. More...

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. More...

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. More...

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. More...

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. More...

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. More...

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);. More...

Int_t	SetBranchAddressImp (TBranch branch, void addr, TBranch **ptr)
	Change branch address, dealing with clone trees properly. More...

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. More...

Long64_t	GetCacheAutoSize (Bool_t withDefault=kFALSE) const
	Used for automatic sizing of the cache. More...

char	GetNewlineValue (std::istream &inputStream)
	Determine which newline this file is using. More...

TTreeCache *	GetReadCache (TFile *file, Bool_t create=kFALSE)
	Find and return the TTreeCache registered with the file and which may contain branches for us. More...

void	ImportClusterRanges (TTree *fromtree)
	Appends the cluster range information stored in 'fromtree' to this tree, including the value of fAutoFlush. More...

void	MoveReadCache (TFile src, TDirectory dir)
	Move a cache from a file to the current file in dir. More...

Int_t	SetCacheSizeAux (Bool_t autocache=kTRUE, Long64_t cacheSize=0)
	Set the size of the file cache and create it if possible. More...

Protected Member Functions inherited from TObject
void	MakeZombie ()

virtual void	DoError (int level, const char location, const char fmt, va_list va) const
	Interface to ErrorHandler (protected). More...

Protected Attributes
Int_t	fNvar

Float_t *	fArgs

Protected Attributes inherited from TTree
Long64_t	fEntries

Long64_t	fTotBytes

Long64_t	fZipBytes

Long64_t	fSavedBytes

Long64_t	fFlushedBytes

Double_t	fWeight

Int_t	fTimerInterval

Int_t	fScanField

Int_t	fUpdate

Int_t	fDefaultEntryOffsetLen

Int_t	fNClusterRange

Int_t	fMaxClusterRange

Long64_t	fMaxEntries
	Memory allocated for the cluster range. More...

Long64_t	fMaxEntryLoop

Long64_t	fMaxVirtualSize

Long64_t	fAutoSave

Long64_t	fAutoFlush

Long64_t	fEstimate

Long64_t *	fClusterRangeEnd

Long64_t *	fClusterSize

Long64_t	fCacheSize

Long64_t	fChainOffset
	Maximum size of file buffers. More...

Long64_t	fReadEntry
	Offset of 1st entry of this Tree in a TChain. More...

Long64_t	fTotalBuffers
	Number of the entry being processed. More...

Int_t	fPacketSize
	Total number of bytes in branch buffers. More...

Int_t	fNfill
	Number of entries in one packet for parallel root. More...

Int_t	fDebug
	Local for EntryLoop. More...

Long64_t	fDebugMin
	Debug level. More...

Long64_t	fDebugMax
	First entry number to debug. More...

Int_t	fMakeClass
	Last entry number to debug. More...

Int_t	fFileNumber
	not zero when processing code generated by MakeClass More...

TObject *	fNotify
	current file number (if file extensions) More...

TDirectory *	fDirectory
	Object to be notified when loading a Tree. More...

TObjArray	fBranches
	Pointer to directory holding this tree. More...

TObjArray	fLeaves

TList *	fAliases

TEventList *	fEventList

TEntryList *	fEntryList
	Pointer to event selection list (if one) More...

TArrayD	fIndexValues
	Pointer to event selection list (if one) More...

TArrayI	fIndex

TVirtualIndex *	fTreeIndex

TList *	fFriends

TVirtualPerfStats *	fPerfStats

TList *	fUserInfo
	pointer to the current perf stats object More...

TVirtualTreePlayer *	fPlayer

TList *	fClones
	Pointer to current Tree player. More...

TBranchRef *	fBranchRef
	List of cloned trees which share our addresses. More...

UInt_t	fFriendLockStatus

TBuffer *	fTransientBuffer
	Record which method is locking the friend recursion. More...

Bool_t	fCacheDoAutoInit
	Pointer to the current transient buffer. More...

Bool_t	fCacheUserSet
	true if cache auto creation or resize check is needed More...

Protected Attributes inherited from TNamed
TString	fName

TString	fTitle

Protected Attributes inherited from TAttLine
Color_t	fLineColor

Style_t	fLineStyle

Width_t	fLineWidth

Protected Attributes inherited from TAttFill
Color_t	fFillColor

Style_t	fFillStyle

Protected Attributes inherited from TAttMarker
Color_t	fMarkerColor

Style_t	fMarkerStyle

Size_t	fMarkerSize

Private Member Functions
	TNtuple (const TNtuple &)

TNtuple &	operator= (const TNtuple &)

Additional Inherited Members
Public Types inherited from TTree
enum	ESetBranchAddressStatus { kMissingBranch = -5, kInternalError = -4, kMissingCompiledCollectionProxy = -3, kMismatch = -2, kClassMismatch = -1, kMatch = 0, kMatchConversion = 1, kMatchConversionCollection = 2, kMakeClass = 3, kVoidPtr = 4, kNoCheck = 5 }

enum	{ kForceRead = BIT(11), kCircular = BIT(12) }

enum	{ kSplitCollectionOfPointers = 100 }

Public Types inherited from TObject
enum	EStatusBits { kCanDelete = BIT(0), kMustCleanup = BIT(3), kObjInCanvas = BIT(3), kIsReferenced = BIT(4), kHasUUID = BIT(5), kCannotPick = BIT(6), kNoContextMenu = BIT(8), kInvalidObject = BIT(13) }

enum	{ kIsOnHeap = 0x01000000, kNotDeleted = 0x02000000, kZombie = 0x04000000, kBitMask = 0x00ffffff }

enum	{ kSingleKey = BIT(0), kOverwrite = BIT(1), kWriteDelete = BIT(2) }

Static Public Member Functions inherited from TTree
static Int_t	GetBranchStyle ()
	Static function returning the current branch style. More...

static Long64_t	GetMaxTreeSize ()
	Static function which returns the tree file size limit in bytes. More...

static TTree *	MergeTrees (TList list, Option_t option="")
	Static function merging the trees in the TList into a new tree. More...

static void	SetBranchStyle (Int_t style=1)
	Set the current branch style. More...

static void	SetMaxTreeSize (Long64_t maxsize=1900000000)
	Set the maximum size in bytes of a Tree file (static function). More...

Static Public Member Functions inherited from TObject
static Long_t	GetDtorOnly ()
	Return destructor only flag. More...

static void	SetDtorOnly (void *obj)
	Set destructor only flag. More...

static Bool_t	GetObjectStat ()
	Get status of object stat flag. More...

static void	SetObjectStat (Bool_t stat)
	Turn on/off tracking of objects in the TObjectTable. More...

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) }

Static Protected Attributes inherited from TTree
static Int_t	fgBranchStyle = 1
	true if the cache setting was explicitly given by user More...

static Long64_t	fgMaxTreeSize = 100000000000LL

#include <TNtuple.h>

Inheritance diagram for TNtuple:

[legend]

Constructor & Destructor Documentation

TNtuple::TNtuple ( const TNtuple & )

private

TNtuple::TNtuple ( )

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 65 of file TNtuple.cxx.

TNtuple::~TNtuple ( )

virtual

Default destructor for an Ntuple.

Definition at line 102 of file TNtuple.cxx.

Member Function Documentation

void TNtuple::Browse ( TBrowser * b )

virtual

Browse content of the ntuple.

Reimplemented from TTree.

Definition at line 157 of file TNtuple.cxx.

TNtuple::ClassDef	(	TNtuple	,
		2
	)

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 118 of file TNtuple.cxx.

Int_t TNtuple::Fill ( )

protectedvirtual

[fNvar] Array of variables

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 168 of file TNtuple.cxx.

Referenced by TVirtualPacketizer::HandleTimer(), hsimple(), httpserver(), mlpRegression(), parallelcoord(), TProofProgressDialog::Progress(), and TGeoChecker::TestOverlaps().

Int_t TNtuple::Fill ( const Float_t * x )

virtual

Fill a Ntuple with an array of floats.

Definition at line 176 of file TNtuple.cxx.

Int_t TNtuple::Fill ( Int_t x0 )

inline

Definition at line 50 of file TNtuple.h.

Referenced by Fill().

Int_t TNtuple::Fill ( Double_t x0 )

inline

Definition at line 51 of file TNtuple.h.

Referenced by Fill().

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 190 of file TNtuple.cxx.

Float_t* TNtuple::GetArgs ( ) const

inline

Definition at line 58 of file TNtuple.h.

Referenced by TProofProgressDialog::DoPlotRateGraph(), and TVirtualPacketizer::HandleTimer().

virtual Int_t TNtuple::GetNvar ( ) const

inlinevirtual

Definition at line 57 of file TNtuple.h.

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

private

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 219 of file TNtuple.cxx.

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 132 of file TNtuple.cxx.

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 146 of file TNtuple.cxx.

Member Data Documentation

Float_t* TNtuple::fArgs

protected

Definition at line 34 of file TNtuple.h.

Referenced by Fill(), GetArgs(), ResetBranchAddress(), ResetBranchAddresses(), TNtuple(), and ~TNtuple().

Int_t TNtuple::fNvar

protected

Definition at line 33 of file TNtuple.h.

Referenced by CloneTree(), Fill(), GetNvar(), ResetBranchAddresses(), and TNtuple().

Collaboration diagram for TNtuple:

[legend]

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

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

Public Member Functions

Protected Member Functions

Protected Attributes

Private Member Functions

Additional Inherited Members

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation