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1// @(#)root/hist:$Id: TGraph2D.h,v 1.00
2// Author: Olivier Couet
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_TGraph2D
13#define ROOT_TGraph2D
17// //
18// TGraph2D //
19// //
20// Graph 2D graphics class. //
21// //
24#include "TNamed.h"
25#include "TAttLine.h"
26#include "TAttFill.h"
27#include "TAttMarker.h"
29class TAxis;
30class TList;
31class TF2;
32class TH1;
33class TH2;
34class TH2D;
35class TView;
36class TDirectory;
39#include "TFitResultPtr.h"
41class TGraph2D : public TNamed, public TAttLine, public TAttFill, public TAttMarker {
45 Int_t fNpoints; ///< Number of points in the data set
46 Int_t fNpx; ///< Number of bins along X in fHistogram
47 Int_t fNpy; ///< Number of bins along Y in fHistogram
48 Int_t fMaxIter; ///< Maximum number of iterations to find Delaunay triangles
49 Int_t fSize; ///<!Real size of fX, fY and fZ
50 Double_t *fX; ///<[fNpoints]
51 Double_t *fY; ///<[fNpoints] Data set to be plotted
52 Double_t *fZ; ///<[fNpoints]
53 Double_t fMinimum; ///< Minimum value for plotting along z
54 Double_t fMaximum; ///< Maximum value for plotting along z
55 Double_t fMargin; ///< Extra space (in %) around interpolated area for fHistogram
56 Double_t fZout; ///< fHistogram bin height for points lying outside the interpolated area
57 TList *fFunctions; ///< Pointer to list of functions (fits and user)
58 TH2D *fHistogram; ///<!2D histogram of z values linearly interpolated on the triangles
59 TObject *fDelaunay; ///<! Pointer to Delaunay interpolator object
60 TDirectory *fDirectory; ///<!Pointer to directory holding this 2D graph
61 TVirtualHistPainter *fPainter; ///<!Pointer to histogram painter
63 void Build(Int_t n);
67 Bool_t fUserHisto; // True when SetHistogram has been called
71 };
73 void CreateInterpolator(Bool_t oldInterp);
79 TGraph2D();
81 TGraph2D(Int_t n, Int_t *x, Int_t *y, Int_t *z);
84 TGraph2D(TH2 *h2);
85 TGraph2D(const char *name, const char *title, Int_t n, Double_t *x, Double_t *y, Double_t *z);
86 TGraph2D(const char *filename, const char *format="%lg %lg %lg", Option_t *option="");
87 TGraph2D(const TGraph2D &);
89 virtual ~TGraph2D();
91 TGraph2D& operator=(const TGraph2D &);
93 virtual void Browse(TBrowser *);
94 virtual void Clear(Option_t *option="");
95 virtual void DirectoryAutoAdd(TDirectory *);
97 virtual void Draw(Option_t *option="P0");
98 void ExecuteEvent(Int_t event, Int_t px, Int_t py);
99 virtual TObject *FindObject(const char *name) const;
100 virtual TObject *FindObject(const TObject *obj) const;
101 virtual TFitResultPtr Fit(const char *formula ,Option_t *option="" ,Option_t *goption=""); // *MENU*
102 virtual TFitResultPtr Fit(TF2 *f2 ,Option_t *option="" ,Option_t *goption=""); // *MENU*
103 virtual void FitPanel(); // *MENU*
104 TList *GetContourList(Double_t contour);
106 Int_t GetNpx() const {return fNpx;}
107 Int_t GetNpy() const {return fNpy;}
108 TH2D *GetHistogram(Option_t *option="");
110 virtual Double_t GetErrorX(Int_t bin) const;
111 virtual Double_t GetErrorY(Int_t bin) const;
112 virtual Double_t GetErrorZ(Int_t bin) const;
113 Double_t GetMargin() const {return fMargin;}
114 Double_t GetMaximum() const {return fMaximum;};
115 Double_t GetMinimum() const {return fMinimum;};
116 TAxis *GetXaxis() const ;
117 TAxis *GetYaxis() const ;
118 TAxis *GetZaxis() const ;
119 Int_t GetN() const {return fNpoints;}
120 Double_t *GetX() const {return fX;}
121 Double_t *GetY() const {return fY;}
122 Double_t *GetZ() const {return fZ;}
123 virtual Double_t *GetEX() const {return 0;}
124 virtual Double_t *GetEY() const {return 0;}
125 virtual Double_t *GetEZ() const {return 0;}
126 Double_t GetXmax() const;
127 Double_t GetXmin() const;
128 Double_t GetYmax() const;
129 Double_t GetYmin() const;
130 Double_t GetZmax() const;
131 Double_t GetZmin() const;
132 virtual Double_t GetXmaxE() const {return GetXmax();};
133 virtual Double_t GetXminE() const {return GetXmin();};
134 virtual Double_t GetYmaxE() const {return GetYmax();};
135 virtual Double_t GetYminE() const {return GetYmin();};
136 virtual Double_t GetZmaxE() const {return GetZmax();};
137 virtual Double_t GetZminE() const {return GetZmin();};
138 virtual Int_t GetPoint(Int_t i, Double_t &x, Double_t &y, Double_t &z) const;
140 void Paint(Option_t *option="");
141 virtual void Print(Option_t *chopt="") const;
142 TH1 *Project(Option_t *option="x") const; // *MENU*
143 Int_t RemovePoint(Int_t ipoint); // *MENU*
144 virtual void SavePrimitive(std::ostream &out, Option_t *option = "");
145 virtual void Set(Int_t n);
146 virtual void SetDirectory(TDirectory *dir);
147 virtual void SetHistogram(TH2 *h);
148 void SetMargin(Double_t m=0.1); // *MENU*
149 void SetMarginBinsContent(Double_t z=0.); // *MENU*
150 void SetMaximum(Double_t maximum=-1111); // *MENU*
151 void SetMinimum(Double_t minimum=-1111); // *MENU*
152 void SetMaxIter(Int_t n=100000) {fMaxIter = n;} // *MENU*
153 virtual void SetName(const char *name); // *MENU*
154 virtual void SetNameTitle(const char *name, const char *title);
155 void SetNpx(Int_t npx=40); // *MENU*
156 void SetNpy(Int_t npx=40); // *MENU*
157 virtual void SetPoint(Int_t point, Double_t x, Double_t y, Double_t z); // *MENU*
158 virtual void SetTitle(const char *title=""); // *MENU*
161 ClassDef(TGraph2D,1) //Set of n x[n],y[n],z[n] points with 3-d graphics including Delaunay triangulation
#define h(i)
Definition: RSha256.hxx:106
int Int_t
Definition: RtypesCore.h:43
bool Bool_t
Definition: RtypesCore.h:61
double Double_t
Definition: RtypesCore.h:57
float Float_t
Definition: RtypesCore.h:55
const char Option_t
Definition: RtypesCore.h:64
#define ClassDef(name, id)
Definition: Rtypes.h:322
#define BIT(n)
Definition: Rtypes.h:83
char name[80]
Definition: TGX11.cxx:109
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
Describe directory structure in memory.
Definition: TDirectory.h:40
A 2-Dim function with parameters.
Definition: TF2.h:29
Provides an indirection to the TFitResult class and with a semantics identical to a TFitResult pointe...
Definition: TFitResultPtr.h:31
Graphics object made of three arrays X, Y and Z with the same number of points each.
Definition: TGraph2D.h:41
Int_t fMaxIter
Maximum number of iterations to find Delaunay triangles.
Definition: TGraph2D.h:48
Double_t GetMaximum() const
Definition: TGraph2D.h:114
virtual Double_t GetYminE() const
Definition: TGraph2D.h:135
Graph2D default constructor.
Definition: TGraph2D.cxx:208
void Build(Int_t n)
Creates the 2D graph basic data structure.
Definition: TGraph2D.cxx:580
Double_t Interpolate(Double_t x, Double_t y)
Finds the z value at the position (x,y) thanks to the Delaunay interpolation.
Definition: TGraph2D.cxx:1301
Int_t fNpoints
Number of points in the data set.
Definition: TGraph2D.h:45
virtual Double_t GetZminE() const
Definition: TGraph2D.h:137
virtual void Print(Option_t *chopt="") const
Print 2D graph values.
Definition: TGraph2D.cxx:1380
virtual Double_t GetErrorZ(Int_t bin) const
This function is called by Graph2DFitChisquare.
Definition: TGraph2D.cxx:1033
Double_t GetMinimum() const
Definition: TGraph2D.h:115
Double_t * GetY() const
Definition: TGraph2D.h:121
virtual void FitPanel()
Display a GUI panel with all graph fit options.
Definition: TGraph2D.cxx:935
void SetMarginBinsContent(Double_t z=0.)
Sets the histogram bin height for points lying outside the TGraphDelaunay convex hull ie: the bins in...
Definition: TGraph2D.cxx:1642
Int_t fNpx
Number of bins along X in fHistogram.
Definition: TGraph2D.h:46
virtual Double_t GetYmaxE() const
Definition: TGraph2D.h:134
Double_t GetYmin() const
Returns the Y minimum.
Definition: TGraph2D.cxx:1254
Bool_t fUserHisto
Definition: TGraph2D.h:67
Double_t GetZmin() const
Returns the Z minimum.
Definition: TGraph2D.cxx:1276
Double_t * GetX() const
Definition: TGraph2D.h:120
virtual Double_t GetZmaxE() const
Definition: TGraph2D.h:136
Double_t * fZ
Definition: TGraph2D.h:52
virtual Double_t GetErrorX(Int_t bin) const
This function is called by Graph2DFitChisquare.
Definition: TGraph2D.cxx:1013
Double_t fMargin
Extra space (in %) around interpolated area for fHistogram.
Definition: TGraph2D.h:55
Double_t fMinimum
Minimum value for plotting along z.
Definition: TGraph2D.h:53
Double_t GetXmin() const
Returns the X minimum.
Definition: TGraph2D.cxx:1232
Int_t DistancetoPrimitive(Int_t px, Int_t py)
Computes distance from point px,py to a graph.
Definition: TGraph2D.cxx:676
virtual void Browse(TBrowser *)
Definition: TGraph2D.cxx:617
virtual Double_t * GetEZ() const
Definition: TGraph2D.h:125
TH2D * GetHistogram(Option_t *option="")
By default returns a pointer to the Delaunay histogram.
Definition: TGraph2D.cxx:1077
TVirtualHistPainter * fPainter
!Pointer to histogram painter
Definition: TGraph2D.h:61
virtual TFitResultPtr Fit(const char *formula, Option_t *option="", Option_t *goption="")
Fits this graph with function with name fname Predefined functions such as gaus, expo and poln are au...
Definition: TGraph2D.cxx:761
virtual TObject * FindObject(const char *name) const
search object named name in the list of functions
Definition: TGraph2D.cxx:737
virtual void SavePrimitive(std::ostream &out, Option_t *option="")
Saves primitive as a C++ statement(s) on output stream out.
Definition: TGraph2D.cxx:1520
Double_t GetMargin() const
Definition: TGraph2D.h:113
Double_t GetZmax() const
Returns the Z maximum.
Definition: TGraph2D.cxx:1265
Int_t RemovePoint(Int_t ipoint)
Deletes point number ipoint.
Definition: TGraph2D.cxx:1484
Double_t fMaximum
Maximum value for plotting along z.
Definition: TGraph2D.h:54
TAxis * GetZaxis() const
Get z axis of the graph.
Definition: TGraph2D.cxx:981
void SetMargin(Double_t m=0.1)
Sets the extra space (in %) around interpolated area for the 2D histogram.
Definition: TGraph2D.cxx:1622
void SetNpy(Int_t npx=40)
Sets the number of bins along Y used to draw the function.
Definition: TGraph2D.cxx:1728
Double_t fZout
fHistogram bin height for points lying outside the interpolated area
Definition: TGraph2D.h:56
TH2D * fHistogram
!2D histogram of z values linearly interpolated on the triangles
Definition: TGraph2D.h:58
virtual Double_t GetXminE() const
Definition: TGraph2D.h:133
TList * GetContourList(Double_t contour)
Returns the X and Y graphs building a contour.
Definition: TGraph2D.cxx:994
Double_t GetXmax() const
Returns the X maximum.
Definition: TGraph2D.cxx:1221
virtual Int_t GetPoint(Int_t i, Double_t &x, Double_t &y, Double_t &z) const
Get x, y and z values for point number i.
Definition: TGraph2D.cxx:1287
virtual void SetTitle(const char *title="")
Sets the 2D graph title.
Definition: TGraph2D.cxx:1799
TAxis * GetYaxis() const
Get y axis of the graph.
Definition: TGraph2D.cxx:970
virtual ~TGraph2D()
TGraph2D destructor.
Definition: TGraph2D.cxx:526
virtual Double_t GetErrorY(Int_t bin) const
This function is called by Graph2DFitChisquare.
Definition: TGraph2D.cxx:1023
virtual Double_t * GetEY() const
Definition: TGraph2D.h:124
TList * GetListOfFunctions() const
Definition: TGraph2D.h:109
TObject * fDelaunay
! Pointer to Delaunay interpolator object
Definition: TGraph2D.h:59
TH1 * Project(Option_t *option="x") const
Projects a 2-d graph into 1 or 2-d histograms depending on the option parameter.
Definition: TGraph2D.cxx:1397
Int_t GetN() const
Definition: TGraph2D.h:119
virtual void SetHistogram(TH2 *h)
Sets the histogram to be filled.
Definition: TGraph2D.cxx:1609
virtual Double_t GetXmaxE() const
Definition: TGraph2D.h:132
virtual void Set(Int_t n)
Set number of points in the 2D graph.
Definition: TGraph2D.cxx:1572
void SetMinimum(Double_t minimum=-1111)
Set minimum.
Definition: TGraph2D.cxx:1667
TGraph2D & operator=(const TGraph2D &)
Graph2D operator "=".
Definition: TGraph2D.cxx:535
Double_t * fX
Definition: TGraph2D.h:50
Double_t * fY
[fNpoints] Data set to be plotted
Definition: TGraph2D.h:51
void SetMaximum(Double_t maximum=-1111)
Set maximum.
Definition: TGraph2D.cxx:1656
virtual void SetNameTitle(const char *name, const char *title)
Change the name and title of this 2D graph.
Definition: TGraph2D.cxx:1692
Double_t GetYmax() const
Returns the Y maximum.
Definition: TGraph2D.cxx:1243
virtual void SetDirectory(TDirectory *dir)
By default when an 2D graph is created, it is added to the list of 2D graph objects in the current di...
Definition: TGraph2D.cxx:1588
TDirectory * fDirectory
!Pointer to directory holding this 2D graph
Definition: TGraph2D.h:60
virtual Double_t * GetEX() const
Definition: TGraph2D.h:123
virtual void DirectoryAutoAdd(TDirectory *)
Perform the automatic addition of the graph to the given directory.
Definition: TGraph2D.cxx:661
void CreateInterpolator(Bool_t oldInterp)
Add a TGraphDelaunay in the list of the fHistogram's functions.
Definition: TGraph2D.cxx:1042
Int_t GetNpy() const
Definition: TGraph2D.h:107
TDirectory * GetDirectory() const
Definition: TGraph2D.h:105
Int_t fNpy
Number of bins along Y in fHistogram.
Definition: TGraph2D.h:47
virtual void SetName(const char *name)
Changes the name of this 2D graph.
Definition: TGraph2D.cxx:1678
TList * fFunctions
Pointer to list of functions (fits and user)
Definition: TGraph2D.h:57
virtual void SetPoint(Int_t point, Double_t x, Double_t y, Double_t z)
Sets point number n.
Definition: TGraph2D.cxx:1752
void Paint(Option_t *option="")
Paints this 2D graph with its current attributes.
Definition: TGraph2D.cxx:1338
virtual void Draw(Option_t *option="P0")
Specific drawing options can be used to paint a TGraph2D:
Definition: TGraph2D.cxx:708
void ExecuteEvent(Int_t event, Int_t px, Int_t py)
Executes action corresponding to one event.
Definition: TGraph2D.cxx:728
Int_t GetNpx() const
Definition: TGraph2D.h:106
Int_t fSize
!Real size of fX, fY and fZ
Definition: TGraph2D.h:49
virtual void Clear(Option_t *option="")
Free all memory allocated by this object.
Definition: TGraph2D.cxx:627
void SetMaxIter(Int_t n=100000)
Definition: TGraph2D.h:152
@ kOldInterpolation
Definition: TGraph2D.h:70
TAxis * GetXaxis() const
Get x axis of the graph.
Definition: TGraph2D.cxx:959
Double_t * GetZ() const
Definition: TGraph2D.h:122
void SetNpx(Int_t npx=40)
Sets the number of bins along X used to draw the function.
Definition: TGraph2D.cxx:1706
The TH1 histogram class.
Definition: TH1.h:56
2-D histogram with a double per channel (see TH1 documentation)}
Definition: TH2.h:292
Service class for 2-Dim histogram classes.
Definition: TH2.h:30
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
Definition: TObject.h:57
See TView3D.
Definition: TView.h:25
Abstract interface to a histogram painter.
Double_t y[n]
Definition: legend1.C:17
Double_t x[n]
Definition: legend1.C:17
const Int_t n
Definition: legend1.C:16
auto * m
Definition: textangle.C:8