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Reference Guide
TGraph.h
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1// @(#)root/hist:$Id$
2// Author: Rene Brun, Olivier Couet 12/12/94
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_TGraph
13#define ROOT_TGraph
14
15
16//////////////////////////////////////////////////////////////////////////
17// //
18// TGraph //
19// //
20// Graph graphics class. //
21// //
22//////////////////////////////////////////////////////////////////////////
23
24#include "TNamed.h"
25#include "TAttLine.h"
26#include "TAttFill.h"
27#include "TAttMarker.h"
28#include "TVectorFfwd.h"
29#include "TVectorDfwd.h"
30
31class TBrowser;
32class TAxis;
33class TH1;
34class TH1F;
35class TCollection;
36class TF1;
37class TSpline;
38
39#include "TFitResultPtr.h"
40
41class TGraph : public TNamed, public TAttLine, public TAttFill, public TAttMarker {
42
43protected:
44
45 Int_t fMaxSize; ///<!Current dimension of arrays fX and fY
46 Int_t fNpoints; ///< Number of points <= fMaxSize
47 Double_t *fX; ///<[fNpoints] array of X points
48 Double_t *fY; ///<[fNpoints] array of Y points
49 TList *fFunctions; ///< Pointer to list of functions (fits and user)
50 TH1F *fHistogram; ///< Pointer to histogram used for drawing axis
51 Double_t fMinimum; ///< Minimum value for plotting along y
52 Double_t fMaximum; ///< Maximum value for plotting along y
53
54 static void SwapValues(Double_t* arr, Int_t pos1, Int_t pos2);
55 virtual void SwapPoints(Int_t pos1, Int_t pos2);
56
57 virtual Double_t **Allocate(Int_t newsize);
58 Double_t **AllocateArrays(Int_t Narrays, Int_t arraySize);
59 virtual Bool_t CopyPoints(Double_t **newarrays, Int_t ibegin, Int_t iend, Int_t obegin);
60 virtual void CopyAndRelease(Double_t **newarrays, Int_t ibegin, Int_t iend, Int_t obegin);
62 Double_t **ExpandAndCopy(Int_t size, Int_t iend);
63 virtual void FillZero(Int_t begin, Int_t end, Bool_t from_ctor = kTRUE);
64 Double_t **ShrinkAndCopy(Int_t size, Int_t iend);
65 virtual Bool_t DoMerge(const TGraph * g);
66
67public:
68 // TGraph status bits
70 kClipFrame = BIT(10), ///< clip to the frame boundary
71 kResetHisto = BIT(17), ///< fHistogram must be reset in GetHistogram
72 kNotEditable = BIT(18), ///< bit set if graph is non editable
73 kIsSortedX = BIT(19), ///< graph is sorted in X points
74 kIsHighlight = BIT(20) ///< bit set if graph is highlight
75 };
76
77 TGraph();
78 TGraph(Int_t n);
79 TGraph(Int_t n, const Int_t *x, const Int_t *y);
80 TGraph(Int_t n, const Float_t *x, const Float_t *y);
81 TGraph(Int_t n, const Double_t *x, const Double_t *y);
82 TGraph(const TGraph &gr);
83 TGraph& operator=(const TGraph&);
84 TGraph(const TVectorF &vx, const TVectorF &vy);
85 TGraph(const TVectorD &vx, const TVectorD &vy);
86 TGraph(const TH1 *h);
87 TGraph(const TF1 *f, Option_t *option="");
88 TGraph(const char *filename, const char *format="%lg %lg", Option_t *option="");
89 virtual ~TGraph();
90
91 virtual void Apply(TF1 *f);
92 virtual void Browse(TBrowser *b);
93 virtual Double_t Chisquare(TF1 *f1, Option_t *option="") const;
94 static Bool_t CompareArg(const TGraph* gr, Int_t left, Int_t right);
95 static Bool_t CompareX(const TGraph* gr, Int_t left, Int_t right);
96 static Bool_t CompareY(const TGraph* gr, Int_t left, Int_t right);
97 static Bool_t CompareRadius(const TGraph* gr, Int_t left, Int_t right);
98 virtual void ComputeRange(Double_t &xmin, Double_t &ymin, Double_t &xmax, Double_t &ymax) const;
99 virtual Int_t DistancetoPrimitive(Int_t px, Int_t py);
100 virtual void Draw(Option_t *chopt="");
101 virtual void DrawGraph(Int_t n, const Int_t *x, const Int_t *y, Option_t *option="");
102 virtual void DrawGraph(Int_t n, const Float_t *x, const Float_t *y, Option_t *option="");
103 virtual void DrawGraph(Int_t n, const Double_t *x=0, const Double_t *y=0, Option_t *option="");
104 virtual void DrawPanel(); // *MENU*
105 virtual Double_t Eval(Double_t x, TSpline *spline=0, Option_t *option="") const;
106 virtual void ExecuteEvent(Int_t event, Int_t px, Int_t py);
107 virtual void Expand(Int_t newsize);
108 virtual void Expand(Int_t newsize, Int_t step);
109 virtual TObject *FindObject(const char *name) const;
110 virtual TObject *FindObject(const TObject *obj) const;
111 virtual TFitResultPtr Fit(const char *formula ,Option_t *option="" ,Option_t *goption="", Axis_t xmin=0, Axis_t xmax=0); // *MENU*
112 virtual TFitResultPtr Fit(TF1 *f1 ,Option_t *option="" ,Option_t *goption="", Axis_t xmin=0, Axis_t xmax=0);
113 virtual void FitPanel(); // *MENU*
114 Bool_t GetEditable() const;
115 TF1 *GetFunction(const char *name) const;
116 TH1F *GetHistogram() const;
118 virtual Double_t GetCorrelationFactor() const;
119 virtual Double_t GetCovariance() const;
120 virtual Double_t GetMean(Int_t axis=1) const;
121 virtual Double_t GetRMS(Int_t axis=1) const;
122 Int_t GetMaxSize() const {return fMaxSize;}
123 Int_t GetN() const {return fNpoints;}
124 virtual Double_t GetErrorX(Int_t bin) const;
125 virtual Double_t GetErrorY(Int_t bin) const;
126 virtual Double_t GetErrorXhigh(Int_t bin) const;
127 virtual Double_t GetErrorXlow(Int_t bin) const;
128 virtual Double_t GetErrorYhigh(Int_t bin) const;
129 virtual Double_t GetErrorYlow(Int_t bin) const;
130 Double_t *GetX() const {return fX;}
131 Double_t *GetY() const {return fY;}
132 virtual Double_t *GetEX() const {return 0;}
133 virtual Double_t *GetEY() const {return 0;}
134 virtual Double_t *GetEXhigh() const {return 0;}
135 virtual Double_t *GetEXlow() const {return 0;}
136 virtual Double_t *GetEYhigh() const {return 0;}
137 virtual Double_t *GetEYlow() const {return 0;}
138 virtual Double_t *GetEXlowd() const {return 0;}
139 virtual Double_t *GetEXhighd() const {return 0;}
140 virtual Double_t *GetEYlowd() const {return 0;}
141 virtual Double_t *GetEYhighd() const {return 0;}
142 Double_t GetMaximum() const {return fMaximum;}
143 Double_t GetMinimum() const {return fMinimum;}
144 TAxis *GetXaxis() const ;
145 TAxis *GetYaxis() const ;
146 virtual Int_t GetPoint(Int_t i, Double_t &x, Double_t &y) const;
147
148 virtual void InitExpo(Double_t xmin=0, Double_t xmax=0);
149 virtual void InitGaus(Double_t xmin=0, Double_t xmax=0);
150 virtual void InitPolynom(Double_t xmin=0, Double_t xmax=0);
151 virtual Int_t InsertPoint(); // *MENU*
152 virtual void InsertPointBefore(Int_t ipoint, Double_t x, Double_t y);
153 virtual Double_t Integral(Int_t first=0, Int_t last=-1) const;
154 virtual Bool_t IsEditable() const {return !TestBit(kNotEditable);}
155 virtual Bool_t IsHighlight() const { return TestBit(kIsHighlight); }
156 virtual Int_t IsInside(Double_t x, Double_t y) const;
157 virtual void LeastSquareFit(Int_t m, Double_t *a, Double_t xmin=0, Double_t xmax=0);
158 virtual void LeastSquareLinearFit(Int_t n, Double_t &a0, Double_t &a1, Int_t &ifail, Double_t xmin=0, Double_t xmax=0);
159 virtual Int_t Merge(TCollection* list);
160 virtual void Paint(Option_t *chopt="");
161 void PaintGraph(Int_t npoints, const Double_t *x, const Double_t *y, Option_t *chopt);
162 void PaintGrapHist(Int_t npoints, const Double_t *x, const Double_t *y, Option_t *chopt);
163 virtual void PaintStats(TF1 *fit);
164 virtual void Print(Option_t *chopt="") const;
165 virtual void RecursiveRemove(TObject *obj);
166 virtual Int_t RemovePoint(); // *MENU*
167 virtual Int_t RemovePoint(Int_t ipoint);
168 virtual void SavePrimitive(std::ostream &out, Option_t *option = "");
169 virtual void SetEditable(Bool_t editable=kTRUE); // *TOGGLE* *GETTER=GetEditable
170 virtual void SetHighlight(Bool_t set = kTRUE); // *TOGGLE* *GETTER=IsHighlight
171 virtual void SetHistogram(TH1F *h) {fHistogram = h;}
172 virtual void SetMaximum(Double_t maximum=-1111); // *MENU*
173 virtual void SetMinimum(Double_t minimum=-1111); // *MENU*
174 virtual void Set(Int_t n);
175 virtual void SetPoint(Int_t i, Double_t x, Double_t y);
176 virtual void SetName(const char *name=""); // *MENU*
177 virtual void SetNameTitle(const char *name="", const char *title="");
178 virtual void SetTitle(const char *title=""); // *MENU*
179 virtual void Sort(Bool_t (*greater)(const TGraph*, Int_t, Int_t)=&TGraph::CompareX,
180 Bool_t ascending=kTRUE, Int_t low=0, Int_t high=-1111);
181 virtual void UseCurrentStyle();
182 void Zero(Int_t &k,Double_t AZ,Double_t BZ,Double_t E2,Double_t &X,Double_t &Y,Int_t maxiterations);
183
184 ClassDef(TGraph,4) //Graph graphics class
185};
186
187inline Double_t **TGraph::Allocate(Int_t newsize) {
188 return AllocateArrays(2, newsize);
189}
190
191#endif
#define b(i)
Definition: RSha256.hxx:100
#define f(i)
Definition: RSha256.hxx:104
#define g(i)
Definition: RSha256.hxx:105
#define h(i)
Definition: RSha256.hxx:106
int Int_t
Definition: RtypesCore.h:41
bool Bool_t
Definition: RtypesCore.h:59
double Axis_t
Definition: RtypesCore.h:72
double Double_t
Definition: RtypesCore.h:55
float Float_t
Definition: RtypesCore.h:53
const Bool_t kTRUE
Definition: RtypesCore.h:87
const char Option_t
Definition: RtypesCore.h:62
#define ClassDef(name, id)
Definition: Rtypes.h:324
#define BIT(n)
Definition: Rtypes.h:82
float xmin
Definition: THbookFile.cxx:93
float ymin
Definition: THbookFile.cxx:93
float xmax
Definition: THbookFile.cxx:93
float ymax
Definition: THbookFile.cxx:93
Fill Area Attributes class.
Definition: TAttFill.h:19
Line Attributes class.
Definition: TAttLine.h:18
Marker Attributes class.
Definition: TAttMarker.h:19
Class to manage histogram axis.
Definition: TAxis.h:30
Using a TBrowser one can browse all ROOT objects.
Definition: TBrowser.h:37
Collection abstract base class.
Definition: TCollection.h:63
1-Dim function class
Definition: TF1.h:211
Provides an indirection to the TFitResult class and with a semantics identical to a TFitResult pointe...
Definition: TFitResultPtr.h:31
A Graph is a graphics object made of two arrays X and Y with npoints each.
Definition: TGraph.h:41
virtual Double_t Integral(Int_t first=0, Int_t last=-1) const
Integrate the TGraph data within a given (index) range.
Definition: TGraph.cxx:1792
Int_t fNpoints
Number of points <= fMaxSize.
Definition: TGraph.h:46
virtual Int_t IsInside(Double_t x, Double_t y) const
Return 1 if the point (x,y) is inside the polygon defined by the graph vertices 0 otherwise.
Definition: TGraph.cxx:1825
virtual void LeastSquareFit(Int_t m, Double_t *a, Double_t xmin=0, Double_t xmax=0)
Least squares polynomial fitting without weights.
Definition: TGraph.cxx:1840
virtual Double_t Chisquare(TF1 *f1, Option_t *option="") const
Return the chisquare of this graph with respect to f1.
Definition: TGraph.cxx:593
virtual void SetPoint(Int_t i, Double_t x, Double_t y)
Set x and y values for point number i.
Definition: TGraph.cxx:2200
Double_t * GetY() const
Definition: TGraph.h:131
virtual Int_t Merge(TCollection *list)
Adds all graphs from the collection to this graph.
Definition: TGraph.cxx:2444
Int_t fMaxSize
!Current dimension of arrays fX and fY
Definition: TGraph.h:45
Double_t ** ShrinkAndCopy(Int_t size, Int_t iend)
if size*2 <= fMaxSize allocate new arrays of size points, copy points [0,oend).
Definition: TGraph.cxx:2253
virtual Double_t GetRMS(Int_t axis=1) const
Return RMS of X (axis=1) or Y (axis=2)
Definition: TGraph.cxx:1376
virtual Double_t * GetEXhighd() const
Definition: TGraph.h:139
virtual Bool_t IsEditable() const
Definition: TGraph.h:154
TH1F * fHistogram
Pointer to histogram used for drawing axis.
Definition: TGraph.h:50
@ kNotEditable
bit set if graph is non editable
Definition: TGraph.h:72
@ kIsHighlight
bit set if graph is highlight
Definition: TGraph.h:74
@ kIsSortedX
graph is sorted in X points
Definition: TGraph.h:73
@ kClipFrame
clip to the frame boundary
Definition: TGraph.h:70
@ kResetHisto
fHistogram must be reset in GetHistogram
Definition: TGraph.h:71
virtual Double_t GetErrorXlow(Int_t bin) const
This function is called by GraphFitChisquare.
Definition: TGraph.cxx:1428
virtual void SetName(const char *name="")
Set graph name.
Definition: TGraph.cxx:2223
virtual Double_t GetErrorYlow(Int_t bin) const
This function is called by GraphFitChisquare.
Definition: TGraph.cxx:1448
virtual void CopyAndRelease(Double_t **newarrays, Int_t ibegin, Int_t iend, Int_t obegin)
Copy points from fX and fY to arrays[0] and arrays[1] or to fX and fY if arrays == 0 and ibegin !...
Definition: TGraph.cxx:678
Double_t GetMinimum() const
Definition: TGraph.h:143
virtual void SetNameTitle(const char *name="", const char *title="")
Set graph name and title.
Definition: TGraph.cxx:2241
virtual Double_t * GetEYlow() const
Definition: TGraph.h:137
virtual void SetMaximum(Double_t maximum=-1111)
Set the maximum of the graph.
Definition: TGraph.cxx:2182
virtual Double_t * GetEX() const
Definition: TGraph.h:132
static Bool_t CompareY(const TGraph *gr, Int_t left, Int_t right)
Return kTRUE if fY[left] > fY[right]. Can be used by Sort.
Definition: TGraph.cxx:629
virtual TObject * FindObject(const char *name) const
Search object named name in the list of functions.
Definition: TGraph.cxx:1025
static Bool_t CompareRadius(const TGraph *gr, Int_t left, Int_t right)
Return kTRUE if point number "left"'s distance to origin is bigger than that of point number "right".
Definition: TGraph.cxx:638
virtual Double_t GetErrorYhigh(Int_t bin) const
This function is called by GraphFitChisquare.
Definition: TGraph.cxx:1438
static Bool_t CompareX(const TGraph *gr, Int_t left, Int_t right)
Return kTRUE if fX[left] > fX[right]. Can be used by Sort.
Definition: TGraph.cxx:621
Double_t GetMaximum() const
Definition: TGraph.h:142
Int_t GetN() const
Definition: TGraph.h:123
TF1 * GetFunction(const char *name) const
Return pointer to function with name.
Definition: TGraph.cxx:1459
virtual Double_t * GetEXlowd() const
Definition: TGraph.h:138
virtual void LeastSquareLinearFit(Int_t n, Double_t &a0, Double_t &a1, Int_t &ifail, Double_t xmin=0, Double_t xmax=0)
Least square linear fit without weights.
Definition: TGraph.cxx:1915
virtual void SetTitle(const char *title="")
Set graph title.
Definition: TGraph.cxx:2232
Double_t * fY
[fNpoints] array of Y points
Definition: TGraph.h:48
Bool_t CtorAllocate()
In constructors set fNpoints than call this method.
Definition: TGraph.cxx:721
virtual void DrawGraph(Int_t n, const Int_t *x, const Int_t *y, Option_t *option="")
Draw this graph with new attributes.
Definition: TGraph.cxx:801
virtual TFitResultPtr Fit(const char *formula, Option_t *option="", Option_t *goption="", Axis_t xmin=0, Axis_t xmax=0)
Fit this graph with function with name fname.
Definition: TGraph.cxx:1052
virtual void Sort(Bool_t(*greater)(const TGraph *, Int_t, Int_t)=&TGraph::CompareX, Bool_t ascending=kTRUE, Int_t low=0, Int_t high=-1111)
Sorts the points of this TGraph using in-place quicksort (see e.g.
Definition: TGraph.cxx:2286
static Bool_t CompareArg(const TGraph *gr, Int_t left, Int_t right)
Return kTRUE if point number "left"'s argument (angle with respect to positive x-axis) is bigger than...
Definition: TGraph.cxx:610
virtual void ComputeRange(Double_t &xmin, Double_t &ymin, Double_t &xmax, Double_t &ymax) const
Compute the x/y range of the points in this graph.
Definition: TGraph.cxx:647
Double_t ** AllocateArrays(Int_t Narrays, Int_t arraySize)
Allocate arrays.
Definition: TGraph.cxx:531
TList * fFunctions
Pointer to list of functions (fits and user)
Definition: TGraph.h:49
virtual Double_t GetCovariance() const
Return covariance of vectors x,y.
Definition: TGraph.cxx:1345
virtual Double_t * GetEYlowd() const
Definition: TGraph.h:140
static void SwapValues(Double_t *arr, Int_t pos1, Int_t pos2)
Swap values.
Definition: TGraph.cxx:2397
void Zero(Int_t &k, Double_t AZ, Double_t BZ, Double_t E2, Double_t &X, Double_t &Y, Int_t maxiterations)
Find zero of a continuous function.
Definition: TGraph.cxx:2476
virtual Double_t ** Allocate(Int_t newsize)
Definition: TGraph.h:187
virtual void FitPanel()
Display a GUI panel with all graph fit options.
Definition: TGraph.cxx:1311
virtual void Print(Option_t *chopt="") const
Print graph values.
Definition: TGraph.cxx:1997
virtual Bool_t DoMerge(const TGraph *g)
protected function to perform the merge operation of a graph
Definition: TGraph.cxx:2461
virtual void Draw(Option_t *chopt="")
Draw this graph with its current attributes.
Definition: TGraph.cxx:747
virtual void InsertPointBefore(Int_t ipoint, Double_t x, Double_t y)
Insert a new point with coordinates (x,y) before the point number ipoint.
Definition: TGraph.cxx:1738
TList * GetListOfFunctions() const
Definition: TGraph.h:117
virtual void SavePrimitive(std::ostream &out, Option_t *option="")
Save primitive as a C++ statement(s) on output stream out.
Definition: TGraph.cxx:2055
Double_t * GetX() const
Definition: TGraph.h:130
Int_t GetMaxSize() const
Definition: TGraph.h:122
virtual void InitExpo(Double_t xmin=0, Double_t xmax=0)
Compute Initial values of parameters for an exponential.
Definition: TGraph.cxx:1652
virtual Int_t RemovePoint()
Delete point close to the mouse position.
Definition: TGraph.cxx:2018
virtual void InitGaus(Double_t xmin=0, Double_t xmax=0)
Compute Initial values of parameters for a gaussian.
Definition: TGraph.cxx:1614
virtual Bool_t IsHighlight() const
Definition: TGraph.h:155
virtual void Paint(Option_t *chopt="")
Draw this graph with its current attributes.
Definition: TGraph.cxx:1961
virtual void Apply(TF1 *f)
Apply function f to all the data points f may be a 1-D function TF1 or 2-d function TF2 The Y values ...
Definition: TGraph.cxx:554
virtual void SetHighlight(Bool_t set=kTRUE)
Set highlight (enable/disble) mode for the graph by default highlight mode is disable.
Definition: TGraph.cxx:2169
virtual void SwapPoints(Int_t pos1, Int_t pos2)
Swap points.
Definition: TGraph.cxx:2388
virtual Double_t * GetEYhighd() const
Definition: TGraph.h:141
virtual void RecursiveRemove(TObject *obj)
Recursively remove object from the list of functions.
Definition: TGraph.cxx:2007
TAxis * GetXaxis() const
Get x axis of the graph.
Definition: TGraph.cxx:1594
Bool_t GetEditable() const
Return kTRUE if kNotEditable bit is not set, kFALSE otherwise.
Definition: TGraph.cxx:2150
virtual Double_t * GetEXhigh() const
Definition: TGraph.h:134
virtual Double_t GetCorrelationFactor() const
Return graph correlation factor.
Definition: TGraph.cxx:1333
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) Should be redefined in descendant classes.
Definition: TGraph.cxx:1016
virtual Double_t * GetEYhigh() const
Definition: TGraph.h:136
virtual Double_t Eval(Double_t x, TSpline *spline=0, Option_t *option="") const
Interpolate points in this graph at x using a TSpline.
Definition: TGraph.cxx:865
Double_t ** ExpandAndCopy(Int_t size, Int_t iend)
if size > fMaxSize allocate new arrays of 2*size points and copy iend first points.
Definition: TGraph.cxx:1002
virtual void Expand(Int_t newsize)
If array sizes <= newsize, expand storage to 2*newsize.
Definition: TGraph.cxx:977
virtual void UseCurrentStyle()
Set current style settings in this graph This function is called when either TCanvas::UseCurrentStyle...
Definition: TGraph.cxx:2409
virtual Double_t GetMean(Int_t axis=1) const
Return mean value of X (axis=1) or Y (axis=2)
Definition: TGraph.cxx:1361
Double_t * fX
[fNpoints] array of X points
Definition: TGraph.h:47
virtual void PaintStats(TF1 *fit)
Draw the stats.
Definition: TGraph.cxx:1988
TAxis * GetYaxis() const
Get y axis of the graph.
Definition: TGraph.cxx:1604
virtual Int_t DistancetoPrimitive(Int_t px, Int_t py)
Compute distance from point px,py to a graph.
Definition: TGraph.cxx:791
TH1F * GetHistogram() const
Returns a pointer to the histogram used to draw the axis Takes into account the two following cases.
Definition: TGraph.cxx:1471
virtual Double_t GetErrorY(Int_t bin) const
This function is called by GraphFitChisquare.
Definition: TGraph.cxx:1408
virtual Double_t * GetEY() const
Definition: TGraph.h:133
virtual void SetHistogram(TH1F *h)
Definition: TGraph.h:171
Double_t fMinimum
Minimum value for plotting along y.
Definition: TGraph.h:51
void PaintGraph(Int_t npoints, const Double_t *x, const Double_t *y, Option_t *chopt)
Draw the (x,y) as a graph.
Definition: TGraph.cxx:1970
virtual Int_t InsertPoint()
Insert a new point at the mouse position.
Definition: TGraph.cxx:1693
virtual Double_t * GetEXlow() const
Definition: TGraph.h:135
virtual void Browse(TBrowser *b)
Browse.
Definition: TGraph.cxx:567
virtual void DrawPanel()
Display a panel with all graph drawing options.
Definition: TGraph.cxx:844
void PaintGrapHist(Int_t npoints, const Double_t *x, const Double_t *y, Option_t *chopt)
Draw the (x,y) as a histogram.
Definition: TGraph.cxx:1979
virtual ~TGraph()
Graph default destructor.
Definition: TGraph.cxx:507
virtual void Set(Int_t n)
Set number of points in the graph Existing coordinates are preserved New coordinates above fNpoints a...
Definition: TGraph.cxx:2135
virtual Int_t GetPoint(Int_t i, Double_t &x, Double_t &y) const
Get x and y values for point number i.
Definition: TGraph.cxx:1582
virtual void SetEditable(Bool_t editable=kTRUE)
if editable=kFALSE, the graph cannot be modified with the mouse by default a TGraph is editable
Definition: TGraph.cxx:2159
virtual void ExecuteEvent(Int_t event, Int_t px, Int_t py)
Execute action corresponding to one event.
Definition: TGraph.cxx:968
virtual void SetMinimum(Double_t minimum=-1111)
Set the minimum of the graph.
Definition: TGraph.cxx:2191
TGraph()
Graph default constructor.
Definition: TGraph.cxx:86
virtual Bool_t CopyPoints(Double_t **newarrays, Int_t ibegin, Int_t iend, Int_t obegin)
Copy points from fX and fY to arrays[0] and arrays[1] or to fX and fY if arrays == 0 and ibegin !...
Definition: TGraph.cxx:695
Double_t fMaximum
Maximum value for plotting along y.
Definition: TGraph.h:52
virtual Double_t GetErrorXhigh(Int_t bin) const
This function is called by GraphFitChisquare.
Definition: TGraph.cxx:1418
TGraph & operator=(const TGraph &)
Equal operator for this graph.
Definition: TGraph.cxx:187
virtual void InitPolynom(Double_t xmin=0, Double_t xmax=0)
Compute Initial values of parameters for a polynom.
Definition: TGraph.cxx:1673
virtual Double_t GetErrorX(Int_t bin) const
This function is called by GraphFitChisquare.
Definition: TGraph.cxx:1399
1-D histogram with a float per channel (see TH1 documentation)}
Definition: TH1.h:571
The TH1 histogram class.
Definition: TH1.h:56
A doubly linked list.
Definition: TList.h:44
The TNamed class is the base class for all named ROOT classes.
Definition: TNamed.h:29
Mother of all ROOT objects.
Definition: TObject.h:37
R__ALWAYS_INLINE Bool_t TestBit(UInt_t f) const
Definition: TObject.h:172
EStatusBits
Definition: TObject.h:57
Base class for spline implementation containing the Draw/Paint methods.
Definition: TSpline.h:22
TVectorT.
Definition: TVectorT.h:27
Double_t y[n]
Definition: legend1.C:17
Double_t x[n]
Definition: legend1.C:17
const Int_t n
Definition: legend1.C:16
TGraphErrors * gr
Definition: legend1.C:25
TF1 * f1
Definition: legend1.C:11
Definition: first.py:1
auto * m
Definition: textangle.C:8
auto * a
Definition: textangle.C:12