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1 // @(#)root/hist:$Id: TGraph2D.h,v 1.00
2 // Author: Olivier Couet
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  *************************************************************************/
12 #ifndef ROOT_TGraph2D
13 #define ROOT_TGraph2D
16 //////////////////////////////////////////////////////////////////////////
17 // //
18 // TGraph2D //
19 // //
20 // Graph 2D graphics class. //
21 // //
22 //////////////////////////////////////////////////////////////////////////
24 #include "TNamed.h"
25 #include "TVirtualHistPainter.h"
26 #include "TAttLine.h"
27 #include "TAttFill.h"
28 #include "TAttMarker.h"
30 class TAxis;
31 class TList;
32 class TF2;
33 class TH2;
34 class TH2D;
35 class TView;
36 class TDirectory;
38 #include "TFitResultPtr.h"
40 class TGraph2D : public TNamed, public TAttLine, public TAttFill, public TAttMarker {
42 protected:
44  Int_t fNpoints; ///< Number of points in the data set
45  Int_t fNpx; ///< Number of bins along X in fHistogram
46  Int_t fNpy; ///< Number of bins along Y in fHistogram
47  Int_t fMaxIter; ///< Maximum number of iterations to find Delaunay triangles
48  Int_t fSize; ///<!Real size of fX, fY and fZ
49  Double_t *fX; ///<[fNpoints]
50  Double_t *fY; ///<[fNpoints] Data set to be plotted
51  Double_t *fZ; ///<[fNpoints]
52  Double_t fMinimum; ///< Minimum value for plotting along z
53  Double_t fMaximum; ///< Maximum value for plotting along z
54  Double_t fMargin; ///< Extra space (in %) around interpolated area for fHistogram
55  Double_t fZout; ///< fHistogram bin height for points lying outside the interpolated area
56  TList *fFunctions; ///< Pointer to list of functions (fits and user)
57  TH2D *fHistogram; ///<!2D histogram of z values linearly interpolated on the triangles
58  TObject *fDelaunay; ///<! Pointer to Delaunay interpolator object
59  TDirectory *fDirectory; ///<!Pointer to directory holding this 2D graph
60  TVirtualHistPainter *fPainter; ///<!Pointer to histogram painter
62  void Build(Int_t n);
64 private:
66  Bool_t fUserHisto; // True when SetHistogram has been called
68  enum {
70  };
73 protected:
75 public:
77  TGraph2D();
78  TGraph2D(Int_t n);
79  TGraph2D(Int_t n, Int_t *x, Int_t *y, Int_t *z);
82  TGraph2D(TH2 *h2);
83  TGraph2D(const char *name, const char *title, Int_t n, Double_t *x, Double_t *y, Double_t *z);
84  TGraph2D(const char *filename, const char *format="%lg %lg %lg", Option_t *option="");
85  TGraph2D(const TGraph2D &);
87  virtual ~TGraph2D();
89  TGraph2D& operator=(const TGraph2D &);
91  virtual void Browse(TBrowser *);
92  virtual void Clear(Option_t *option="");
93  virtual void DirectoryAutoAdd(TDirectory *);
95  virtual void Draw(Option_t *option="");
96  void ExecuteEvent(Int_t event, Int_t px, Int_t py);
97  virtual TObject *FindObject(const char *name) const;
98  virtual TObject *FindObject(const TObject *obj) const;
99  virtual TFitResultPtr Fit(const char *formula ,Option_t *option="" ,Option_t *goption=""); // *MENU*
100  virtual TFitResultPtr Fit(TF2 *f2 ,Option_t *option="" ,Option_t *goption=""); // *MENU*
101  virtual void FitPanel(); // *MENU*
102  TList *GetContourList(Double_t contour);
103  TDirectory *GetDirectory() const {return fDirectory;}
104  Int_t GetNpx() const {return fNpx;}
105  Int_t GetNpy() const {return fNpy;}
106  TH2D *GetHistogram(Option_t *option="");
107  TList *GetListOfFunctions() const { return fFunctions; }
108  virtual Double_t GetErrorX(Int_t bin) const;
109  virtual Double_t GetErrorY(Int_t bin) const;
110  virtual Double_t GetErrorZ(Int_t bin) const;
111  Double_t GetMargin() const {return fMargin;}
112  Double_t GetMaximum() const {return fMaximum;};
113  Double_t GetMinimum() const {return fMinimum;};
114  TAxis *GetXaxis() const ;
115  TAxis *GetYaxis() const ;
116  TAxis *GetZaxis() const ;
117  Int_t GetN() const {return fNpoints;}
118  Double_t *GetX() const {return fX;}
119  Double_t *GetY() const {return fY;}
120  Double_t *GetZ() const {return fZ;}
121  virtual Double_t *GetEX() const {return 0;}
122  virtual Double_t *GetEY() const {return 0;}
123  virtual Double_t *GetEZ() const {return 0;}
124  Double_t GetXmax() const;
125  Double_t GetXmin() const;
126  Double_t GetYmax() const;
127  Double_t GetYmin() const;
128  Double_t GetZmax() const;
129  Double_t GetZmin() const;
130  virtual Double_t GetXmaxE() const {return GetXmax();};
131  virtual Double_t GetXminE() const {return GetXmin();};
132  virtual Double_t GetYmaxE() const {return GetYmax();};
133  virtual Double_t GetYminE() const {return GetYmin();};
134  virtual Double_t GetZmaxE() const {return GetZmax();};
135  virtual Double_t GetZminE() const {return GetZmin();};
137  void Paint(Option_t *option="");
138  TH1 *Project(Option_t *option="x") const; // *MENU*
139  Int_t RemovePoint(Int_t ipoint); // *MENU*
140  virtual void SavePrimitive(std::ostream &out, Option_t *option = "");
141  virtual void Set(Int_t n);
142  virtual void SetDirectory(TDirectory *dir);
143  virtual void SetHistogram(TH2 *h);
144  void SetMargin(Double_t m=0.1); // *MENU*
145  void SetMarginBinsContent(Double_t z=0.); // *MENU*
146  void SetMaximum(Double_t maximum=-1111); // *MENU*
147  void SetMinimum(Double_t minimum=-1111); // *MENU*
148  void SetMaxIter(Int_t n=100000) {fMaxIter = n;} // *MENU*
149  virtual void SetName(const char *name); // *MENU*
150  virtual void SetNameTitle(const char *name, const char *title);
151  void SetNpx(Int_t npx=40); // *MENU*
152  void SetNpy(Int_t npx=40); // *MENU*
153  virtual void SetPoint(Int_t point, Double_t x, Double_t y, Double_t z); // *MENU*
154  virtual void SetTitle(const char *title=""); // *MENU*
157  ClassDef(TGraph2D,1) //Set of n x[n],y[n],z[n] points with 3-d graphics including Delaunay triangulation
158 };
160 #endif
Int_t fMaxIter
Maximum number of iterations to find Delaunay triangles.
Definition: TGraph2D.h:47
Int_t DistancetoPrimitive(Int_t px, Int_t py)
Computes distance from point px,py to a graph.
Definition: TGraph2D.cxx:672
TH2D * GetHistogram(Option_t *option="")
By default returns a pointer to the Delaunay histogram.
Definition: TGraph2D.cxx:1037
virtual void DirectoryAutoAdd(TDirectory *)
Perform the automatic addition of the graph to the given directory.
Definition: TGraph2D.cxx:657
virtual Double_t GetErrorZ(Int_t bin) const
This function is called by Graph2DFitChisquare.
Definition: TGraph2D.cxx:1019
TList * GetListOfFunctions() const
Definition: TGraph2D.h:107
virtual void Draw(Option_t *option="")
Specific drawing options can be used to paint a TGraph2D:
Definition: TGraph2D.cxx:704
Bool_t fUserHisto
Definition: TGraph2D.h:66
Double_t * fX
Definition: TGraph2D.h:49
float Float_t
Definition: RtypesCore.h:53
const char Option_t
Definition: RtypesCore.h:62
Int_t fNpx
Number of bins along X in fHistogram.
Definition: TGraph2D.h:45
#define BIT(n)
Definition: Rtypes.h:75
TH1 * h
Definition: legend2.C:5
void SetMargin(Double_t m=0.1)
Sets the extra space (in %) around interpolated area for the 2D histogram.
Definition: TGraph2D.cxx:1566
Double_t GetXmax() const
Returns the X maximum.
Definition: TGraph2D.cxx:1197
TGraph2D & operator=(const TGraph2D &)
Graph2D operator "=".
Definition: TGraph2D.cxx:533
TDirectory * GetDirectory() const
Definition: TGraph2D.h:103
See TView3D.
Definition: TView.h:25
virtual void Set(Int_t n)
Set number of points in the 2D graph.
Definition: TGraph2D.cxx:1517
TList * fFunctions
Pointer to list of functions (fits and user)
Definition: TGraph2D.h:56
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:1585
Double_t GetZmin() const
Returns the Z minimum.
Definition: TGraph2D.cxx:1252
TVirtualHistPainter * fPainter
!Pointer to histogram painter
Definition: TGraph2D.h:60
int Int_t
Definition: RtypesCore.h:41
bool Bool_t
Definition: RtypesCore.h:59
Int_t GetNpy() const
Definition: TGraph2D.h:105
Double_t GetYmax() const
Returns the Y maximum.
Definition: TGraph2D.cxx:1219
static std::string format(double x, double y, int digits, int width)
TObject * fDelaunay
! Pointer to Delaunay interpolator object
Definition: TGraph2D.h:58
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:757
Double_t GetMinimum() const
Definition: TGraph2D.h:113
virtual void SetHistogram(TH2 *h)
Sets the histogram to be filled.
Definition: TGraph2D.cxx:1554
virtual Double_t GetXmaxE() const
Definition: TGraph2D.h:130
Marker Attributes class.
Definition: TAttMarker.h:19
Fill Area Attributes class.
Definition: TAttFill.h:19
Double_t x[n]
Definition: legend1.C:17
void ExecuteEvent(Int_t event, Int_t px, Int_t py)
Executes action corresponding to one event.
Definition: TGraph2D.cxx:724
Int_t fNpy
Number of bins along Y in fHistogram.
Definition: TGraph2D.h:46
#define ClassDef(name, id)
Definition: Rtypes.h:297
virtual Double_t * GetEY() const
Definition: TGraph2D.h:122
virtual void SetTitle(const char *title="")
Sets graph title.
Definition: TGraph2D.cxx:1732
TDirectory * fDirectory
!Pointer to directory holding this 2D graph
Definition: TGraph2D.h:59
The TNamed class is the base class for all named ROOT classes.
Definition: TNamed.h:29
Double_t GetXmin() const
Returns the X minimum.
Definition: TGraph2D.cxx:1208
Int_t GetNpx() const
Definition: TGraph2D.h:104
Int_t fSize
!Real size of fX, fY and fZ
Definition: TGraph2D.h:48
virtual void Clear(Option_t *option="")
Free all memory allocated by this object.
Definition: TGraph2D.cxx:624
Abstract interface to a histogram painter.
virtual Double_t GetZminE() const
Definition: TGraph2D.h:135
virtual Double_t * GetEZ() const
Definition: TGraph2D.h:123
Double_t fMaximum
Maximum value for plotting along z.
Definition: TGraph2D.h:53
void SetMaximum(Double_t maximum=-1111)
Set maximum.
Definition: TGraph2D.cxx:1598
A doubly linked list.
Definition: TList.h:43
virtual Double_t GetErrorY(Int_t bin) const
This function is called by Graph2DFitChisquare.
Definition: TGraph2D.cxx:1009
void Paint(Option_t *option="")
Paints this 2D graph with its current attributes.
Definition: TGraph2D.cxx:1301
virtual void SetName(const char *name)
Changes the name of this 2D graph.
Definition: TGraph2D.cxx:1620
Using a TBrowser one can browse all ROOT objects.
Definition: TBrowser.h:37
virtual Double_t GetYminE() const
Definition: TGraph2D.h:133
void SetMaxIter(Int_t n=100000)
Definition: TGraph2D.h:148
void SetMinimum(Double_t minimum=-1111)
Set minimum.
Definition: TGraph2D.cxx:1609
Service class for 2-Dim histogram classes.
Definition: TH2.h:30
Class to manage histogram axis.
Definition: TAxis.h:30
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:1533
virtual void SavePrimitive(std::ostream &out, Option_t *option="")
Saves primitive as a C++ statement(s) on output stream out.
Definition: TGraph2D.cxx:1471
TList * GetContourList(Double_t contour)
Returns the X and Y graphs building a contour.
Definition: TGraph2D.cxx:980
Provides an indirection to the TFitResult class and with a semantics identical to a TFitResult pointe...
Definition: TFitResultPtr.h:31
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:1264
TMarker * m
Definition: textangle.C:8
Double_t GetMaximum() const
Definition: TGraph2D.h:112
Double_t GetMargin() const
Definition: TGraph2D.h:111
Double_t fMinimum
Minimum value for plotting along z.
Definition: TGraph2D.h:52
A 2-Dim function with parameters.
Definition: TF2.h:29
Int_t fNpoints
Number of points in the data set.
Definition: TGraph2D.h:44
virtual ~TGraph2D()
TGraph2D destructor.
Definition: TGraph2D.cxx:524
TH2D * fHistogram
!2D histogram of z values linearly interpolated on the triangles
Definition: TGraph2D.h:57
Int_t RemovePoint(Int_t ipoint)
Deletes point number ipoint.
Definition: TGraph2D.cxx:1436
virtual Double_t * GetEX() const
Definition: TGraph2D.h:121
Double_t * GetY() const
Definition: TGraph2D.h:119
Double_t GetZmax() const
Returns the Z maximum.
Definition: TGraph2D.cxx:1241
virtual TObject * FindObject(const char *name) const
search object named name in the list of functions
Definition: TGraph2D.cxx:733
Double_t fZout
fHistogram bin height for points lying outside the interpolated area
Definition: TGraph2D.h:55
virtual void SetPoint(Int_t point, Double_t x, Double_t y, Double_t z)
Sets point number n.
Definition: TGraph2D.cxx:1692
double Double_t
Definition: RtypesCore.h:55
Describe directory structure in memory.
Definition: TDirectory.h:34
virtual Double_t GetYmaxE() const
Definition: TGraph2D.h:132
Double_t y[n]
Definition: legend1.C:17
Double_t * GetZ() const
Definition: TGraph2D.h:120
The TH1 histogram class.
Definition: TH1.h:56
virtual Double_t GetErrorX(Int_t bin) const
This function is called by Graph2DFitChisquare.
Definition: TGraph2D.cxx:999
TH1 * Project(Option_t *option="x") const
Projects a 2-d graph into 1 or 2-d histograms depending on the option parameter option may contain a ...
Definition: TGraph2D.cxx:1349
Mother of all ROOT objects.
Definition: TObject.h:37
you should not use this method at all Int_t Int_t z
Definition: TRolke.cxx:630
Graph2D default constructor.
Definition: TGraph2D.cxx:207
Double_t * fZ
Definition: TGraph2D.h:51
virtual void FitPanel()
Display a GUI panel with all graph fit options.
Definition: TGraph2D.cxx:921
TAxis * GetXaxis() const
Get x axis of the graph.
Definition: TGraph2D.cxx:945
void Build(Int_t n)
Creates the 2D graph basic data structure.
Definition: TGraph2D.cxx:577
double f2(const double *x)
virtual Double_t GetZmaxE() const
Definition: TGraph2D.h:134
Double_t GetYmin() const
Returns the Y minimum.
Definition: TGraph2D.cxx:1230
void SetNpy(Int_t npx=40)
Sets the number of bins along Y used to draw the function.
Definition: TGraph2D.cxx:1669
Int_t GetN() const
Definition: TGraph2D.h:117
virtual void Browse(TBrowser *)
Definition: TGraph2D.cxx:614
TAxis * GetZaxis() const
Get z axis of the graph.
Definition: TGraph2D.cxx:967
virtual Double_t GetXminE() const
Definition: TGraph2D.h:131
void SetNpx(Int_t npx=40)
Sets the number of bins along X used to draw the function.
Definition: TGraph2D.cxx:1648
Double_t fMargin
Extra space (in %) around interpolated area for fHistogram.
Definition: TGraph2D.h:54
Graphics object made of three arrays X, Y and Z with the same number of points each.
Definition: TGraph2D.h:40
virtual void SetNameTitle(const char *name, const char *title)
Change the name and title of this 2D graph.
Definition: TGraph2D.cxx:1634
const Int_t n
Definition: legend1.C:16
Line Attributes class.
Definition: TAttLine.h:18
Double_t * GetX() const
Definition: TGraph2D.h:118
Double_t * fY
[fNpoints] Data set to be plotted
Definition: TGraph2D.h:50
tomato 2-D histogram with a double per channel (see TH1 documentation)}
Definition: TH2.h:290
TAxis * GetYaxis() const
Get y axis of the graph.
Definition: TGraph2D.cxx:956