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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(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 TTreeCloneTree (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_tGetArgs () 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 TFriendElementAddFriend (const char *treename, const char *filename="")
 Add a TFriendElement to the list of friends. More...
 
virtual TFriendElementAddFriend (const char *treename, TFile *file)
 Add a TFriendElement to the list of friends. More...
 
virtual TFriendElementAddFriend (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 TBranchBranch (const char *name, void *address, const char *leaflist, Int_t bufsize=32000)
 Create a new TTree Branch. More...
 
TBranchBranch (const char *name, char *address, const char *leaflist, Int_t bufsize=32000)
 
TBranchBranch (const char *name, Long_t address, const char *leaflist, Int_t bufsize=32000)
 
TBranchBranch (const char *name, int address, const char *leaflist, Int_t bufsize=32000)
 
virtual TBranchBranch (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 >
TBranchBranch (const char *name, const char *classname, T *obj, Int_t bufsize=32000, Int_t splitlevel=99)
 
template<class T >
TBranchBranch (const char *name, const char *classname, T **addobj, Int_t bufsize=32000, Int_t splitlevel=99)
 
template<class T >
TBranchBranch (const char *name, T **addobj, Int_t bufsize=32000, Int_t splitlevel=99)
 
template<class T >
TBranchBranch (const char *name, T *obj, Int_t bufsize=32000, Int_t splitlevel=99)
 
virtual TBranchBronch (const char *name, const char *classname, void *addobj, Int_t bufsize=32000, Int_t splitlevel=99)
 Create a new TTree BranchElement. More...
 
virtual TBranchBranchOld (const char *name, const char *classname, void *addobj, Int_t bufsize=32000, Int_t splitlevel=1)
 Create a new TTree BranchObject. More...
 
virtual TBranchBranchRef ()
 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...
 
TStreamerInfoBuildStreamerInfo (TClass *cl, void *pointer=0, Bool_t canOptimize=kTRUE)
 Build StreamerInfo for class cl. More...
 
virtual TFileChangeFile (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 TTreeCopyTree (const char *selection, Option_t *option="", Long64_t nentries=kMaxEntries, Long64_t firstentry=0)
 Copy a tree with selection. More...
 
virtual TBasketCreateBasket (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 TBranchFindBranch (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 TLeafFindLeaf (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 TBranchGetBranch (const char *name)
 Return pointer to the branch with the given name in this tree or its friends. More...
 
virtual TBranchRefGetBranchRef () 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
 
TFileGetCurrentFile () const
 Return pointer to the current file. More...
 
Int_t GetDefaultEntryOffsetLen () const
 
Long64_t GetDebugMax () const
 
Long64_t GetDebugMin () const
 
TDirectoryGetDirectory () 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...
 
TEventListGetEventList () const
 
virtual TEntryListGetEntryList ()
 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 TTreeGetFriend (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...
 
TH1GetHistogram ()
 
virtual Int_tGetIndex ()
 
virtual Double_tGetIndexValues ()
 
virtual TIteratorGetIteratorOnAllLeaves (Bool_t dir=kIterForward)
 Creates a new iterator that will go through all the leaves on the tree itself and its friend. More...
 
virtual TLeafGetLeaf (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 TLeafGetLeaf (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 TListGetListOfClones ()
 
virtual TObjArrayGetListOfBranches ()
 
virtual TObjArrayGetListOfLeaves ()
 
virtual TListGetListOfFriends () const
 
virtual TListGetListOfAliases () 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 ()
 
TObjectGetNotify () const
 
TVirtualTreePlayerGetPlayer ()
 Load the TTreePlayer (if not already done). More...
 
virtual Int_t GetPacketSize () const
 
virtual TVirtualPerfStatsGetPerfStats () const
 
virtual Long64_t GetReadEntry () const
 
virtual Long64_t GetReadEvent () const
 
virtual Int_t GetScanField () const
 
TTreeFormulaGetSelect ()
 
virtual Long64_t GetSelectedRows ()
 
virtual Int_t GetTimerInterval () const
 
TBufferGetTransientBuffer (Int_t size)
 Returns the transient buffer currently used by this TTree for reading/writing baskets. More...
 
virtual Long64_t GetTotBytes () const
 
virtual TTreeGetTree () const
 
virtual TVirtualIndexGetTreeIndex () const
 
virtual Int_t GetTreeNumber () const
 
virtual Int_t GetUpdate () const
 
virtual TListGetUserInfo ()
 Return a pointer to the list containing user objects associated to this tree. More...
 
TTreeFormulaGetVar (Int_t i)
 
TTreeFormulaGetVar1 ()
 
TTreeFormulaGetVar2 ()
 
TTreeFormulaGetVar3 ()
 
TTreeFormulaGetVar4 ()
 
virtual Double_tGetVal (Int_t i)
 
virtual Double_tGetV1 ()
 
virtual Double_tGetV2 ()
 
virtual Double_tGetV3 ()
 
virtual Double_tGetV4 ()
 
virtual Double_tGetW ()
 
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...
 
TPrincipalPrincipal (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 TSQLResultQuery (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)
 
TNamedoperator= (const TNamed &rhs)
 TNamed assignment operator. More...
 
virtual ~TNamed ()
 
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 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...
 
TObjectoperator= (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 TObjectDrawClone (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 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 UInt_t GetUniqueID () const
 Return the unique object id. More...
 
virtual const char * GetIconName () const
 Returns mime type name of object. More...
 
virtual Option_tGetOption () 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...
 
voidoperator new (size_t sz)
 
voidoperator new[] (size_t sz)
 
voidoperator new (size_t sz, void *vp)
 
voidoperator 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 TBranchBranchImp (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 TBranchBranchImp (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 TBranchBranchImpRef (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 TBranchBranchImpRef (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 TBranchBronchExec (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 TLeafGetLeafImpl (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...
 
TTreeCacheGetReadCache (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_tfArgs
 
- 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_tfClusterRangeEnd
 
Long64_tfClusterSize
 
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...
 
TObjectfNotify
 current file number (if file extensions) More...
 
TDirectoryfDirectory
 Object to be notified when loading a Tree. More...
 
TObjArray fBranches
 Pointer to directory holding this tree. More...
 
TObjArray fLeaves
 
TListfAliases
 
TEventListfEventList
 
TEntryListfEntryList
 Pointer to event selection list (if one) More...
 
TArrayD fIndexValues
 Pointer to event selection list (if one) More...
 
TArrayI fIndex
 
TVirtualIndexfTreeIndex
 
TListfFriends
 
TVirtualPerfStatsfPerfStats
 
TListfUserInfo
 pointer to the current perf stats object More...
 
TVirtualTreePlayerfPlayer
 
TListfClones
 Pointer to current Tree player. More...
 
TBranchReffBranchRef
 List of cloned trees which share our addresses. More...
 
UInt_t fFriendLockStatus
 
TBufferfTransientBuffer
 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 &)
 
TNtupleoperator= (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 TTreeMergeTrees (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  ,
 
)
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
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: