// @(#)root/graf:$Name: $:$Id: TGraph.h,v 1.47 2005/05/06 15:40:22 rdm Exp $
// Author: Rene Brun, Olivier Couet 12/12/94
/*************************************************************************
* Copyright (C) 1995-2000, Rene Brun and Fons Rademakers. *
* All rights reserved. *
* *
* For the licensing terms see $ROOTSYS/LICENSE. *
* For the list of contributors see $ROOTSYS/README/CREDITS. *
*************************************************************************/
#ifndef ROOT_TGraph
#define ROOT_TGraph
//////////////////////////////////////////////////////////////////////////
// //
// TGraph //
// //
// Graph graphics class. //
// //
//////////////////////////////////////////////////////////////////////////
#ifndef ROOT_TNamed
#include "TNamed.h"
#endif
#ifndef ROOT_TH1
#include "TH1.h"
#endif
class TBrowser;
class TF1;
class TVector;
class TVectorD;
class TSpline;
class TGraph : public TNamed, public TAttLine, public TAttFill, public TAttMarker {
protected:
Int_t fMaxSize; //!Current dimension of arrays fX and fY
Int_t fNpoints; //Number of points <= fMaxSize
Double_t *fX; //[fNpoints] array of X points
Double_t *fY; //[fNpoints] array of Y points
TList *fFunctions; //Pointer to list of functions (fits and user)
TH1F *fHistogram; //Pointer to histogram used for drawing axis
Double_t fMinimum; //Minimum value for plotting along y
Double_t fMaximum; //Maximum value for plotting along y
static void SwapValues(Double_t* arr, Int_t pos1, Int_t pos2);
virtual void SwapPoints(Int_t pos1, Int_t pos2);
virtual Double_t **Allocate(Int_t newsize);
Double_t **AllocateArrays(Int_t Narrays, Int_t arraySize);
virtual Bool_t CopyPoints(Double_t **newarrays,
Int_t ibegin, Int_t iend, Int_t obegin);
virtual void CopyAndRelease(Double_t **newarrays,
Int_t ibegin, Int_t iend, Int_t obegin);
Bool_t CtorAllocate();
Double_t **ExpandAndCopy(Int_t size, Int_t iend);
virtual void FillZero(Int_t begin, Int_t end,
Bool_t from_ctor = kTRUE);
Double_t **ShrinkAndCopy(Int_t size, Int_t iend);
public:
// TGraph status bits
enum {
kClipFrame = BIT(10), // clip to the frame boundary
kNotEditable = BIT(18) // bit set if graph is non editable
};
TGraph();
TGraph(Int_t n);
TGraph(Int_t n, const Int_t *x, const Int_t *y);
TGraph(Int_t n, const Float_t *x, const Float_t *y);
TGraph(Int_t n, const Double_t *x, const Double_t *y);
TGraph(const TGraph &gr);
TGraph(const TVector &vx, const TVector &vy);
TGraph(const TVectorD &vx, const TVectorD &vy);
TGraph(const TH1 *h);
TGraph(const TF1 *f, Option_t *option="");
TGraph(const char *filename, const char *format="%lg %lg", Option_t *option="");
virtual ~TGraph();
virtual void Apply(TF1 *f);
virtual void Browse(TBrowser *b);
void ComputeLogs(Int_t npoints, Int_t opt);
virtual void ComputeRange(Double_t &xmin, Double_t &ymin, Double_t &xmax, Double_t &ymax) const;
virtual Int_t DistancetoPrimitive(Int_t px, Int_t py);
virtual void Draw(Option_t *chopt="");
virtual void DrawGraph(Int_t n, const Int_t *x, const Int_t *y, Option_t *option="");
virtual void DrawGraph(Int_t n, const Float_t *x, const Float_t *y, Option_t *option="");
virtual void DrawGraph(Int_t n, const Double_t *x=0, const Double_t *y=0, Option_t *option="");
virtual void DrawPanel(); // *MENU*
virtual Double_t Eval(Double_t x, TSpline *spline=0, Option_t *option="") const;
virtual void ExecuteEvent(Int_t event, Int_t px, Int_t py);
virtual void Expand(Int_t newsize);
virtual void Expand(Int_t newsize, Int_t step);
virtual TObject *FindObject(const char *name) const;
virtual TObject *FindObject(const TObject *obj) const;
virtual Int_t Fit(const char *formula ,Option_t *option="" ,Option_t *goption="", Axis_t xmin=0, Axis_t xmax=0); // *MENU*
virtual Int_t Fit(TF1 *f1 ,Option_t *option="" ,Option_t *goption="", Axis_t xmin=0, Axis_t xmax=0); // *MENU*
virtual void FitPanel(); // *MENU*
Bool_t GetEditable() const;
TF1 *GetFunction(const char *name) const;
TH1F *GetHistogram() const;
TList *GetListOfFunctions() const { return fFunctions; }
virtual Double_t GetCorrelationFactor() const;
virtual Double_t GetCovariance() const;
virtual Double_t GetMean(Int_t axis=1) const;
virtual Double_t GetRMS(Int_t axis=1) const;
Int_t GetMaxSize() const {return fMaxSize;}
Int_t GetN() const {return fNpoints;}
virtual Double_t GetErrorX(Int_t bin) const;
virtual Double_t GetErrorY(Int_t bin) const;
virtual Double_t GetErrorXhigh(Int_t bin) const;
virtual Double_t GetErrorXlow(Int_t bin) const;
virtual Double_t GetErrorYhigh(Int_t bin) const;
virtual Double_t GetErrorYlow(Int_t bin) const;
Double_t *GetX() const {return fX;}
Double_t *GetY() const {return fY;}
virtual Double_t *GetEX() const {return 0;}
virtual Double_t *GetEY() const {return 0;}
virtual Double_t *GetEXhigh() const {return 0;}
virtual Double_t *GetEXlow() const {return 0;}
virtual Double_t *GetEYhigh() const {return 0;}
virtual Double_t *GetEYlow() const {return 0;}
TAxis *GetXaxis() const ;
TAxis *GetYaxis() const ;
virtual void GetPoint(Int_t i, Double_t &x, Double_t &y) const;
virtual void InitExpo(Double_t xmin=0, Double_t xmax=0);
virtual void InitGaus(Double_t xmin=0, Double_t xmax=0);
virtual void InitPolynom(Double_t xmin=0, Double_t xmax=0);
virtual Int_t InsertPoint(); // *MENU*
virtual Bool_t IsEditable() const {return !TestBit(kNotEditable);}
virtual void LeastSquareFit(Int_t m, Double_t *a, Double_t xmin=0, Double_t xmax=0);
virtual void LeastSquareLinearFit(Int_t n, Double_t &a0, Double_t &a1, Int_t &ifail, Double_t xmin=0, Double_t xmax=0);
virtual Int_t Merge(TCollection* list);
virtual void Paint(Option_t *chopt="");
virtual void PaintFit(TF1 *fit);
virtual void PaintGraph(Int_t npoints, const Double_t *x, const Double_t *y, Option_t *option="");
virtual void PaintGrapHist(Int_t npoints, const Double_t *x, const Double_t *y, Option_t *option="");
virtual void Print(Option_t *chopt="") const;
virtual Int_t RemovePoint(); // *MENU*
virtual Int_t RemovePoint(Int_t ipoint);
virtual void SavePrimitive(ofstream &out, Option_t *option);
virtual void SetEditable(Bool_t editable=kTRUE); // *TOGGLE* *GETTER=GetEditable
virtual void SetHistogram(TH1 *h) {fHistogram = (TH1F*)h;}
virtual void SetMaximum(Double_t maximum=-1111); // *MENU*
virtual void SetMinimum(Double_t minimum=-1111); // *MENU*
virtual void Set(Int_t n);
virtual void SetPoint(Int_t i, Double_t x, Double_t y);
virtual void SetTitle(const char *title=""); // *MENU*
void Smooth(Int_t npoints, Double_t *x, Double_t *y, Int_t drawtype);
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);
virtual void UseCurrentStyle();
void Zero(Int_t &k,Double_t AZ,Double_t BZ,Double_t E2,Double_t &X,Double_t &Y,
Int_t maxiterations);
static Bool_t CompareX(const TGraph* gr, Int_t left, Int_t right);
static Bool_t CompareY(const TGraph* gr, Int_t left, Int_t right);
static Bool_t CompareRadius(const TGraph* gr, Int_t left, Int_t right);
ClassDef(TGraph,4) //Graph graphics class
};
inline Double_t **TGraph::Allocate(Int_t newsize) {
return AllocateArrays(2, newsize);
}
#endif
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