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TNtuple.h
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1// @(#)root/tree:$Id$
2// Author: Rene Brun 06/04/96
3
4/*************************************************************************
5 * Copyright (C) 1995-2000, Rene Brun and Fons Rademakers. *
6 * All rights reserved. *
7 * *
8 * For the licensing terms see $ROOTSYS/LICENSE. *
9 * For the list of contributors see $ROOTSYS/README/CREDITS. *
10 *************************************************************************/
11
12#ifndef ROOT_TNtuple
13#define ROOT_TNtuple
14
15
16//////////////////////////////////////////////////////////////////////////
17// //
18// TNtuple //
19// //
20// A simple tree with branches of floats. //
21// //
22//////////////////////////////////////////////////////////////////////////
23
24#include "TTree.h"
25
26class TBrowser;
27
28class TNtuple : public TTree {
29
30protected:
31 Int_t fNvar; ///< Number of columns
32 Float_t *fArgs; ///<! [fNvar] Array of variables
33
34 virtual Int_t Fill();
35
36private:
37 TNtuple(const TNtuple&); // not implemented
38 TNtuple& operator=(const TNtuple&); // not implemented
39
40public:
41 TNtuple();
42 TNtuple(const char *name,const char *title, const char *varlist, Int_t bufsize=32000);
43 virtual ~TNtuple();
44
45 virtual void Browse(TBrowser *b);
46 virtual TTree *CloneTree(Long64_t nentries = -1, Option_t* option = "");
47 virtual Int_t Fill(const Float_t *x);
48 Int_t Fill(Int_t x0) { return Fill((Float_t)x0); }
49 Int_t Fill(Double_t x0) { return Fill((Float_t)x0); }
50 virtual Int_t Fill(Float_t x0, Float_t x1=0, Float_t x2=0, Float_t x3=0,
51 Float_t x4=0, Float_t x5=0, Float_t x6=0, Float_t x7=0,
52 Float_t x8=0, Float_t x9=0, Float_t x10=0,
53 Float_t x11=0, Float_t x12=0, Float_t x13=0,
54 Float_t x14=0);
55 virtual Int_t GetNvar() const { return fNvar; }
56 Float_t *GetArgs() const { return fArgs; }
57 virtual Long64_t ReadStream(std::istream& inputStream, const char *branchDescriptor="", char delimiter = ' ');
58 virtual void ResetBranchAddress(TBranch *);
60
61 ClassDef(TNtuple,2); //A simple tree with branches of floats.
62};
63
64#endif
#define b(i)
Definition: RSha256.hxx:100
static const double x2[5]
static const double x4[22]
static const double x1[5]
static const double x3[11]
int Int_t
Definition: RtypesCore.h:45
double Double_t
Definition: RtypesCore.h:59
long long Long64_t
Definition: RtypesCore.h:80
float Float_t
Definition: RtypesCore.h:57
const char Option_t
Definition: RtypesCore.h:66
#define ClassDef(name, id)
Definition: Rtypes.h:325
char name[80]
Definition: TGX11.cxx:110
int nentries
Definition: THbookFile.cxx:91
A TTree is a list of TBranches.
Definition: TBranch.h:89
Using a TBrowser one can browse all ROOT objects.
Definition: TBrowser.h:37
A simple TTree restricted to a list of float variables only.
Definition: TNtuple.h:28
virtual void ResetBranchAddress(TBranch *)
Reset the branch addresses to the internal fArgs array.
Definition: TNtuple.cxx:133
virtual Int_t GetNvar() const
Definition: TNtuple.h:55
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...
Definition: TNtuple.cxx:220
Float_t * GetArgs() const
Definition: TNtuple.h:56
Int_t fNvar
Number of columns.
Definition: TNtuple.h:31
virtual Int_t Fill()
Fill a Ntuple with current values in fArgs.
Definition: TNtuple.cxx:169
Int_t Fill(Double_t x0)
Definition: TNtuple.h:49
void ResetBranchAddresses()
Reset the branch addresses to the internal fArgs array.
Definition: TNtuple.cxx:147
TNtuple()
Default constructor for Ntuple.
Definition: TNtuple.cxx:46
virtual void Browse(TBrowser *b)
Browse content of the ntuple.
Definition: TNtuple.cxx:158
TNtuple & operator=(const TNtuple &)
virtual ~TNtuple()
Default destructor for an Ntuple.
Definition: TNtuple.cxx:103
Int_t Fill(Int_t x0)
Definition: TNtuple.h:48
TNtuple(const TNtuple &)
virtual TTree * CloneTree(Long64_t nentries=-1, Option_t *option="")
Create a clone of this tree and copy nentries.
Definition: TNtuple.cxx:119
Float_t * fArgs
! [fNvar] Array of variables
Definition: TNtuple.h:32
A TTree represents a columnar dataset.
Definition: TTree.h:79
Double_t x[n]
Definition: legend1.C:17