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1// @(#)root/tree:$Id$
2// Author: Rene Brun 06/04/96
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 *************************************************************************/
12#ifndef ROOT_TNtuple
13#define ROOT_TNtuple
17// //
18// TNtuple //
19// //
20// A simple tree with branches of floats. //
21// //
24#include "TTree.h"
26class TBrowser;
28class TNtuple : public TTree {
31 Int_t fNvar; ///< Number of columns
32 Float_t *fArgs; ///<! [fNvar] Array of variables
34 Int_t Fill() override;
37 TNtuple(const TNtuple&) = delete;
38 TNtuple& operator=(const TNtuple&) = delete;
41 TNtuple();
42 TNtuple(const char *name,const char *title, const char *varlist, Int_t bufsize=32000);
43 virtual ~TNtuple();
45 void Browse(TBrowser *b) override;
46 TTree *CloneTree(Long64_t nentries = -1, Option_t* option = "") override;
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 Long64_t ReadStream(std::istream& inputStream, const char *branchDescriptor="", char delimiter = ' ') override;
58 void ResetBranchAddress(TBranch *) override;
59 void ResetBranchAddresses() override;
61 ClassDefOverride(TNtuple,2); //A simple tree with branches of floats.
static const double x4[22]
static const double x3[11]
int Int_t
Definition: RtypesCore.h:45
float Float_t
Definition: RtypesCore.h:57
long long Long64_t
Definition: RtypesCore.h:80
const char Option_t
Definition: RtypesCore.h:66
#define ClassDefOverride(name, id)
Definition: Rtypes.h:339
Option_t Option_t option
Option_t Option_t TPoint TPoint const char GetTextMagnitude GetFillStyle GetLineColor GetLineWidth GetMarkerStyle GetTextAlign GetTextColor GetTextSize void char Point_t Rectangle_t WindowAttributes_t Float_t Float_t Float_t b
Option_t Option_t TPoint TPoint const char x2
Option_t Option_t TPoint TPoint const char x1
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
Long64_t ReadStream(std::istream &inputStream, const char *branchDescriptor="", char delimiter=' ') override
Read from filename as many columns as variables in the ntuple the function returns the number of rows...
Definition: TNtuple.cxx:220
TNtuple(const TNtuple &)=delete
virtual Int_t GetNvar() const
Definition: TNtuple.h:55
void ResetBranchAddresses() override
Reset the branch addresses to the internal fArgs array.
Definition: TNtuple.cxx:147
Float_t * GetArgs() const
Definition: TNtuple.h:56
Int_t fNvar
Number of columns.
Definition: TNtuple.h:31
void ResetBranchAddress(TBranch *) override
Reset the branch addresses to the internal fArgs array.
Definition: TNtuple.cxx:133
void Browse(TBrowser *b) override
Browse content of the ntuple.
Definition: TNtuple.cxx:158
TNtuple & operator=(const TNtuple &)=delete
Int_t Fill(Double_t x0)
Definition: TNtuple.h:49
Default constructor for Ntuple.
Definition: TNtuple.cxx:46
virtual ~TNtuple()
Default destructor for an Ntuple.
Definition: TNtuple.cxx:103
Int_t Fill(Int_t x0)
Definition: TNtuple.h:48
Int_t Fill() override
Fill a Ntuple with current values in fArgs.
Definition: TNtuple.cxx:169
Float_t * fArgs
! [fNvar] Array of variables
Definition: TNtuple.h:32
TTree * CloneTree(Long64_t nentries=-1, Option_t *option="") override
Create a clone of this tree and copy nentries.
Definition: TNtuple.cxx:119
A TTree represents a columnar dataset.
Definition: TTree.h:79
Double_t x[n]
Definition: legend1.C:17