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Reference Guide
TGraphAsymmErrors.h
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1 // @(#)root/hist:$Id$
2 // Author: Rene Brun 03/03/99
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_TGraphAsymmErrors
13 #define ROOT_TGraphAsymmErrors
14 
15 
16 //////////////////////////////////////////////////////////////////////////
17 // //
18 // TGraphAsymmErrors //
19 // //
20 // a Graph with asymmetric error bars //
21 // //
22 //////////////////////////////////////////////////////////////////////////
23 
24 #include "TGraph.h"
25 
26 class TGraphAsymmErrors : public TGraph {
27 
28 protected:
29  Double_t *fEXlow; ///<[fNpoints] array of X low errors
30  Double_t *fEXhigh; ///<[fNpoints] array of X high errors
31  Double_t *fEYlow; ///<[fNpoints] array of Y low errors
32  Double_t *fEYhigh; ///<[fNpoints] array of Y high errors
33 
34  virtual void SwapPoints(Int_t pos1, Int_t pos2);
35 
36  virtual Double_t** Allocate(Int_t size);
37  virtual void CopyAndRelease(Double_t **newarrays,
38  Int_t ibegin, Int_t iend, Int_t obegin);
39  virtual Bool_t CopyPoints(Double_t **arrays, Int_t ibegin, Int_t iend,
40  Int_t obegin);
42  virtual void FillZero(Int_t begin, Int_t end,
43  Bool_t from_ctor = kTRUE);
44  virtual Bool_t DoMerge(const TGraph * g);
45 
46 public:
49  TGraphAsymmErrors(Int_t n, const Float_t *x, const Float_t *y, const Float_t *exl=0, const Float_t *exh=0, const Float_t *eyl=0, const Float_t *eyh=0);
50  TGraphAsymmErrors(Int_t n, const Double_t *x, const Double_t *y, const Double_t *exl=0, const Double_t *exh=0, const Double_t *eyl=0, const Double_t *eyh=0);
51  TGraphAsymmErrors(const TVectorF &vx, const TVectorF &vy, const TVectorF &vexl, const TVectorF &vexh, const TVectorF &veyl, const TVectorF &veyh);
52  TGraphAsymmErrors(const TVectorD &vx, const TVectorD &vy, const TVectorD &vexl, const TVectorD &vexh, const TVectorD &veyl, const TVectorD &veyh);
55  TGraphAsymmErrors(const TH1 *h);
56  TGraphAsymmErrors(const TH1* pass, const TH1* total, Option_t *option="");
57  TGraphAsymmErrors(const char *filename, const char *format="%lg %lg %lg %lg %lg %lg", Option_t *option="");
58 
59  virtual ~TGraphAsymmErrors();
60 
61  virtual void Apply(TF1 *f);
62  virtual void BayesDivide(const TH1* pass, const TH1* total, Option_t *opt="");
63  virtual void Divide(const TH1* pass, const TH1* total, Option_t *opt="cp");
64  virtual void ComputeRange(Double_t &xmin, Double_t &ymin, Double_t &xmax, Double_t &ymax) const;
65  Double_t GetErrorX(Int_t bin) const;
66  Double_t GetErrorY(Int_t bin) const;
67  Double_t GetErrorXlow(Int_t i) const;
68  Double_t GetErrorXhigh(Int_t i) const;
69  Double_t GetErrorYlow(Int_t i) const;
70  Double_t GetErrorYhigh(Int_t i) const;
71  Double_t *GetEXlow() const {return fEXlow;}
72  Double_t *GetEXhigh() const {return fEXhigh;}
73  Double_t *GetEYlow() const {return fEYlow;}
74  Double_t *GetEYhigh() const {return fEYhigh;}
75  virtual Int_t Merge(TCollection* list);
76  virtual void Print(Option_t *chopt="") const;
77  virtual void SavePrimitive(std::ostream &out, Option_t *option = "");
78  virtual void SetPointError(Double_t exl, Double_t exh, Double_t eyl, Double_t eyh); // *MENU*
79  virtual void SetPointError(Int_t i, Double_t exl, Double_t exh, Double_t eyl, Double_t eyh);
80  virtual void SetPointEXlow(Int_t i, Double_t exl);
81  virtual void SetPointEXhigh(Int_t i, Double_t exh);
82  virtual void SetPointEYlow(Int_t i, Double_t eyl);
83  virtual void SetPointEYhigh(Int_t i, Double_t eyh);
84 
85  ClassDef(TGraphAsymmErrors,3) //A graph with asymmetric error bars
86 };
87 
89  return AllocateArrays(6, size);
90 }
91 
92 #endif
Double_t * GetEXlow() const
virtual Bool_t CopyPoints(Double_t **arrays, Int_t ibegin, Int_t iend, Int_t obegin)
Copy errors from fE*** to arrays[] or to f Copy points.
float xmin
Definition: THbookFile.cxx:93
virtual void ComputeRange(Double_t &xmin, Double_t &ymin, Double_t &xmax, Double_t &ymax) const
Compute Range.
Double_t GetErrorY(Int_t bin) const
This function is called by GraphFitChisquare.
float Float_t
Definition: RtypesCore.h:53
const char Option_t
Definition: RtypesCore.h:62
Double_t GetErrorX(Int_t bin) const
This function is called by GraphFitChisquare.
float ymin
Definition: THbookFile.cxx:93
#define g(i)
Definition: RSha256.hxx:105
Double_t GetErrorYlow(Int_t i) const
Get low error on Y.
Double_t * fEXhigh
[fNpoints] array of X high errors
virtual void CopyAndRelease(Double_t **newarrays, Int_t ibegin, Int_t iend, Int_t obegin)
Copy and release.
TVectorT.
Definition: TMatrixTBase.h:79
Double_t GetErrorYhigh(Int_t i) const
Get high error on Y.
virtual Int_t Merge(TCollection *list)
Adds all graphs with asymmetric errors from the collection to this graph.
#define f(i)
Definition: RSha256.hxx:104
int Int_t
Definition: RtypesCore.h:41
bool Bool_t
Definition: RtypesCore.h:59
Bool_t CtorAllocate()
Should be called from ctors after fNpoints has been set Note: This function should be called only fro...
Double_t GetErrorXhigh(Int_t i) const
Get high error on X.
virtual Double_t ** Allocate(Int_t size)
TGraph with asymmetric error bars.
Double_t x[n]
Definition: legend1.C:17
#define ClassDef(name, id)
Definition: Rtypes.h:326
virtual void SetPointEXhigh(Int_t i, Double_t exh)
Set EXhigh for point i.
virtual void SetPointEYlow(Int_t i, Double_t eyl)
Set EYlow for point i.
virtual Bool_t DoMerge(const TGraph *g)
protected function to perform the merge operation of a graph with asymmetric errors ...
virtual void Apply(TF1 *f)
Apply a function to all data points y = f(x,y)
virtual ~TGraphAsymmErrors()
TGraphAsymmErrors default destructor.
virtual void BayesDivide(const TH1 *pass, const TH1 *total, Option_t *opt="")
This function is only kept for backward compatibility.
float ymax
Definition: THbookFile.cxx:93
virtual void SwapPoints(Int_t pos1, Int_t pos2)
Swap points.
Collection abstract base class.
Definition: TCollection.h:63
virtual void Divide(const TH1 *pass, const TH1 *total, Option_t *opt="cp")
Fill this TGraphAsymmErrors by dividing two 1-dimensional histograms pass/total.
Double_t * fEYlow
[fNpoints] array of Y low errors
float xmax
Definition: THbookFile.cxx:93
TGraphErrors * gr
Definition: legend1.C:25
#define h(i)
Definition: RSha256.hxx:106
Double_t GetErrorXlow(Int_t i) const
Get low error on X.
static unsigned int total
virtual void FillZero(Int_t begin, Int_t end, Bool_t from_ctor=kTRUE)
Set zero values for point arrays in the range [begin, end)
TGraphAsymmErrors & operator=(const TGraphAsymmErrors &gr)
TGraphAsymmErrors assignment operator.
TGraphAsymmErrors()
TGraphAsymmErrors default constructor.
double Double_t
Definition: RtypesCore.h:55
Double_t y[n]
Definition: legend1.C:17
The TH1 histogram class.
Definition: TH1.h:56
virtual void SetPointEXlow(Int_t i, Double_t exl)
Set EXlow for point i.
Double_t * GetEYlow() const
Double_t * GetEYhigh() const
1-Dim function class
Definition: TF1.h:211
A Graph is a graphics object made of two arrays X and Y with npoints each.
Definition: TGraph.h:41
virtual void SavePrimitive(std::ostream &out, Option_t *option="")
Save primitive as a C++ statement(s) on output stream out.
Double_t * GetEXhigh() const
const Bool_t kTRUE
Definition: RtypesCore.h:87
virtual void Print(Option_t *chopt="") const
Print graph and errors values.
Double_t ** AllocateArrays(Int_t Narrays, Int_t arraySize)
Allocate arrays.
Definition: TGraph.cxx:531
const Int_t n
Definition: legend1.C:16
Double_t * fEXlow
[fNpoints] array of X low errors
virtual void SetPointEYhigh(Int_t i, Double_t eyh)
Set EYhigh for point i.
Double_t * fEYhigh
[fNpoints] array of Y high errors
virtual void SetPointError(Double_t exl, Double_t exh, Double_t eyl, Double_t eyh)
Set ex and ey values for point pointed by the mouse.