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Reference Guide
TGraph2DErrors Class Reference

Graph 2D class with errors.

A TGraph2DErrors is a TGraph2D with errors. It behaves like a TGraph2D and has the same drawing options.

The **"ERR"** drawing option allows to display the error bars. The following example shows how to use it:

{
TCanvas *c = new TCanvas("c","Graph2DErrors example",0,0,600,600);
Double_t P = 6.;
Int_t np = 200;
Double_t *rx=0, *ry=0, *rz=0;
Double_t *ex=0, *ey=0, *ez=0;
rx = new Double_t[np];
ry = new Double_t[np];
rz = new Double_t[np];
ex = new Double_t[np];
ey = new Double_t[np];
ez = new Double_t[np];
TRandom *r = new TRandom();
for (Int_t N=0; N<np;N++) {
rx[N] = 2*P*(r->Rndm(N))-P;
ry[N] = 2*P*(r->Rndm(N))-P;
rz[N] = rx[N]*rx[N]-ry[N]*ry[N];
rx[N] = 10.+rx[N];
ry[N] = 10.+ry[N];
rz[N] = 40.+rz[N];
ex[N] = r->Rndm(N);
ey[N] = r->Rndm(N);
ez[N] = 10*r->Rndm(N);
}
TGraph2DErrors *dte = new TGraph2DErrors(np, rx, ry, rz, ex, ey, ez);
dte->SetTitle("TGraph2D with error bars: option \"ERR\"");
dte->SetFillColor(29);
dte->SetMarkerSize(0.8);
dte->SetMarkerStyle(20);
dte->SetLineWidth(2);
dte->Draw("err p0");
gPad->SetLogy(1);
return c;
}

Definition at line 26 of file TGraph2DErrors.h.

Public Member Functions

 TGraph2DErrors ()
 TGraph2DErrors default constructor. More...
 
 TGraph2DErrors (const TGraph2DErrors &)
 Copy constructor. More...
 
 TGraph2DErrors (Int_t n)
 TGraph2DErrors normal constructor the arrays are preset to zero. More...
 
 TGraph2DErrors (Int_t n, Double_t *x, Double_t *y, Double_t *z, Double_t *ex=0, Double_t *ey=0, Double_t *ez=0, Option_t *option="")
 TGraph2DErrors constructor with doubles vectors as input. More...
 
virtual ~TGraph2DErrors ()
 TGraph2DErrors destructor. More...
 
Double_t GetErrorX (Int_t bin) const
 This function is called by Graph2DFitChisquare. More...
 
Double_t GetErrorY (Int_t bin) const
 This function is called by Graph2DFitChisquare. More...
 
Double_t GetErrorZ (Int_t bin) const
 This function is called by Graph2DFitChisquare. More...
 
Double_tGetEX () const
 
Double_tGetEY () const
 
Double_tGetEZ () const
 
Double_t GetXmaxE () const
 Returns the X maximum with errors. More...
 
Double_t GetXminE () const
 Returns the X minimum with errors. More...
 
Double_t GetYmaxE () const
 Returns the Y maximum with errors. More...
 
Double_t GetYminE () const
 Returns the Y minimum with errors. More...
 
Double_t GetZmaxE () const
 Returns the Z maximum with errors. More...
 
Double_t GetZminE () const
 Returns the Z minimum with errors. More...
 
TGraph2DErrorsoperator= (const TGraph2DErrors &)
 Assignment operator Copy everything except list of functions. More...
 
virtual void Print (Option_t *chopt="") const
 Print 2D graph and errors values. More...
 
Int_t RemovePoint (Int_t ipoint)
 Deletes point number ipoint. More...
 
virtual void Set (Int_t n)
 Set number of points in the 2D graph. More...
 
virtual void SetPoint (Int_t i, Double_t x, Double_t y, Double_t z)
 Set x, y and z values for point number i. More...
 
virtual void SetPointError (Int_t i, Double_t ex, Double_t ey, Double_t ez)
 Set ex, ey and ez values for point number i. More...
 
- Public Member Functions inherited from TGraph2D
 TGraph2D ()
 Graph2D default constructor. More...
 
 TGraph2D (const char *filename, const char *format="%lg %lg %lg", Option_t *option="")
 Graph2D constructor reading input from filename filename is assumed to contain at least three columns of numbers. More...
 
 TGraph2D (const char *name, const char *title, Int_t n, Double_t *x, Double_t *y, Double_t *z)
 Graph2D constructor with name, title and three vectors of doubles as input. More...
 
 TGraph2D (const TGraph2D &)
 Graph2D copy constructor. More...
 
 TGraph2D (Int_t n)
 Graph2D constructor. More...
 
 TGraph2D (Int_t n, Double_t *x, Double_t *y, Double_t *z)
 Graph2D constructor with three vectors of doubles as input. More...
 
 TGraph2D (Int_t n, Float_t *x, Float_t *y, Float_t *z)
 Graph2D constructor with three vectors of floats as input. More...
 
 TGraph2D (Int_t n, Int_t *x, Int_t *y, Int_t *z)
 Graph2D constructor with three vectors of ints as input. More...
 
 TGraph2D (TH2 *h2)
 Graph2D constructor with a TH2 (h2) as input. More...
 
virtual ~TGraph2D ()
 TGraph2D destructor. More...
 
virtual void Browse (TBrowser *)
 Browse. More...
 
virtual void Clear (Option_t *option="")
 Free all memory allocated by this object. More...
 
virtual void DirectoryAutoAdd (TDirectory *)
 Perform the automatic addition of the graph to the given directory. More...
 
Int_t DistancetoPrimitive (Int_t px, Int_t py)
 Computes distance from point px,py to a graph. More...
 
virtual void Draw (Option_t *option="P0")
 Specific drawing options can be used to paint a TGraph2D: More...
 
void ExecuteEvent (Int_t event, Int_t px, Int_t py)
 Executes action corresponding to one event. More...
 
virtual TObjectFindObject (const char *name) const
 search object named name in the list of functions More...
 
virtual TObjectFindObject (const TObject *obj) const
 search object obj in the list of functions More...
 
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 automatically created by ROOT. More...
 
virtual TFitResultPtr Fit (TF2 *f2, Option_t *option="", Option_t *goption="")
 Fits this 2D graph with function f2. More...
 
virtual void FitPanel ()
 Display a GUI panel with all graph fit options. More...
 
TListGetContourList (Double_t contour)
 Returns the X and Y graphs building a contour. More...
 
TDirectoryGetDirectory () const
 
TH2DGetHistogram (Option_t *option="")
 By default returns a pointer to the Delaunay histogram. More...
 
TListGetListOfFunctions () const
 
Double_t GetMargin () const
 
Double_t GetMaximum () const
 
Double_t GetMinimum () const
 
Int_t GetN () const
 
Int_t GetNpx () const
 
Int_t GetNpy () const
 
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. More...
 
Double_tGetX () const
 
TAxisGetXaxis () const
 Get x axis of the graph. More...
 
Double_t GetXmax () const
 Returns the X maximum. More...
 
Double_t GetXmin () const
 Returns the X minimum. More...
 
Double_tGetY () const
 
TAxisGetYaxis () const
 Get y axis of the graph. More...
 
Double_t GetYmax () const
 Returns the Y maximum. More...
 
Double_t GetYmin () const
 Returns the Y minimum. More...
 
Double_tGetZ () const
 
TAxisGetZaxis () const
 Get z axis of the graph. More...
 
Double_t GetZmax () const
 Returns the Z maximum. More...
 
Double_t GetZmin () const
 Returns the Z minimum. More...
 
Double_t Interpolate (Double_t x, Double_t y)
 Finds the z value at the position (x,y) thanks to the Delaunay interpolation. More...
 
TGraph2Doperator= (const TGraph2D &)
 Graph2D operator "=". More...
 
void Paint (Option_t *option="")
 Paints this 2D graph with its current attributes. More...
 
TH1Project (Option_t *option="x") const
 Projects a 2-d graph into 1 or 2-d histograms depending on the option parameter. More...
 
Int_t RemovePoint (Int_t ipoint)
 Deletes point number ipoint. More...
 
virtual void SavePrimitive (std::ostream &out, Option_t *option="")
 Saves primitive as a C++ statement(s) on output stream out. More...
 
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 directory in memory. More...
 
virtual void SetHistogram (TH2 *h)
 Sets the histogram to be filled. More...
 
void SetMargin (Double_t m=0.1)
 Sets the extra space (in %) around interpolated area for the 2D histogram. More...
 
void SetMarginBinsContent (Double_t z=0.)
 Sets the histogram bin height for points lying outside the TGraphDelaunay convex hull ie: the bins in the margin. More...
 
void SetMaximum (Double_t maximum=-1111)
 Set maximum. More...
 
void SetMaxIter (Int_t n=100000)
 
void SetMinimum (Double_t minimum=-1111)
 Set minimum. More...
 
virtual void SetName (const char *name)
 Changes the name of this 2D graph. More...
 
virtual void SetNameTitle (const char *name, const char *title)
 Change the name and title of this 2D graph. More...
 
void SetNpx (Int_t npx=40)
 Sets the number of bins along X used to draw the function. More...
 
void SetNpy (Int_t npx=40)
 Sets the number of bins along Y used to draw the function. More...
 
virtual void SetTitle (const char *title="")
 Sets the 2D graph title. More...
 
- Public Member Functions inherited from TNamed
 TNamed ()
 
 TNamed (const char *name, const char *title)
 
 TNamed (const TNamed &named)
 TNamed copy ctor. More...
 
 TNamed (const TString &name, const TString &title)
 
virtual ~TNamed ()
 TNamed destructor. More...
 
virtual TObjectClone (const char *newname="") const
 Make a clone of an object using the Streamer facility. More...
 
virtual Int_t Compare (const TObject *obj) const
 Compare two TNamed objects. More...
 
virtual void Copy (TObject &named) const
 Copy this to obj. More...
 
virtual void FillBuffer (char *&buffer)
 Encode TNamed into output buffer. More...
 
virtual const char * GetName () const
 Returns name of object. More...
 
virtual const char * GetTitle () const
 Returns title of object. More...
 
virtual ULong_t Hash () const
 Return hash value for this object. More...
 
virtual Bool_t IsSortable () const
 
virtual void ls (Option_t *option="") const
 List TNamed name and title. More...
 
TNamedoperator= (const TNamed &rhs)
 TNamed assignment operator. More...
 
virtual Int_t Sizeof () const
 Return size of the TNamed part of the TObject. More...
 
- Public Member Functions inherited from TObject
 TObject ()
 TObject constructor. More...
 
 TObject (const TObject &object)
 TObject copy ctor. More...
 
virtual ~TObject ()
 TObject destructor. More...
 
void AbstractMethod (const char *method) const
 Use this method to implement an "abstract" method that you don't want to leave purely abstract. More...
 
virtual void AppendPad (Option_t *option="")
 Append graphics object to current pad. More...
 
ULong_t CheckedHash ()
 Check and record whether this class has a consistent Hash/RecursiveRemove setup (*) and then return the regular Hash value for this object. More...
 
virtual const char * ClassName () const
 Returns name of class to which the object belongs. More...
 
virtual void Delete (Option_t *option="")
 Delete this object. More...
 
virtual void DrawClass () const
 Draw class inheritance tree of the class to which this object belongs. More...
 
virtual TObjectDrawClone (Option_t *option="") const
 Draw a clone of this object in the current selected pad for instance with: gROOT->SetSelectedPad(gPad). More...
 
virtual void Dump () const
 Dump contents of object on stdout. More...
 
virtual void Error (const char *method, const char *msgfmt,...) const
 Issue error message. More...
 
virtual void Execute (const char *method, const char *params, Int_t *error=0)
 Execute method on this object with the given parameter string, e.g. More...
 
virtual void Execute (TMethod *method, TObjArray *params, Int_t *error=0)
 Execute method on this object with parameters stored in the TObjArray. More...
 
virtual void Fatal (const char *method, const char *msgfmt,...) const
 Issue fatal error message. More...
 
virtual Option_tGetDrawOption () const
 Get option used by the graphics system to draw this object. More...
 
virtual const char * GetIconName () const
 Returns mime type name of object. More...
 
virtual char * GetObjectInfo (Int_t px, Int_t py) const
 Returns string containing info about the object at position (px,py). More...
 
virtual Option_tGetOption () const
 
virtual UInt_t GetUniqueID () const
 Return the unique object id. More...
 
virtual Bool_t HandleTimer (TTimer *timer)
 Execute action in response of a timer timing out. More...
 
Bool_t HasInconsistentHash () const
 Return true is the type of this object is known to have an inconsistent setup for Hash and RecursiveRemove (i.e. More...
 
virtual void Info (const char *method, const char *msgfmt,...) const
 Issue info message. More...
 
virtual Bool_t InheritsFrom (const char *classname) const
 Returns kTRUE if object inherits from class "classname". More...
 
virtual Bool_t InheritsFrom (const TClass *cl) const
 Returns kTRUE if object inherits from TClass cl. More...
 
virtual void Inspect () const
 Dump contents of this object in a graphics canvas. More...
 
void InvertBit (UInt_t f)
 
virtual Bool_t IsEqual (const TObject *obj) const
 Default equal comparison (objects are equal if they have the same address in memory). More...
 
virtual Bool_t IsFolder () const
 Returns kTRUE in case object contains browsable objects (like containers or lists of other objects). More...
 
R__ALWAYS_INLINE Bool_t IsOnHeap () const
 
R__ALWAYS_INLINE Bool_t IsZombie () const
 
void MayNotUse (const char *method) const
 Use this method to signal that a method (defined in a base class) may not be called in a derived class (in principle against good design since a child class should not provide less functionality than its parent, however, sometimes it is necessary). More...
 
virtual Bool_t Notify ()
 This method must be overridden to handle object notification. More...
 
void Obsolete (const char *method, const char *asOfVers, const char *removedFromVers) const
 Use this method to declare a method obsolete. More...
 
void operator delete (void *ptr)
 Operator delete. More...
 
void operator delete[] (void *ptr)
 Operator delete []. More...
 
voidoperator new (size_t sz)
 
voidoperator new (size_t sz, void *vp)
 
voidoperator new[] (size_t sz)
 
voidoperator new[] (size_t sz, void *vp)
 
TObjectoperator= (const TObject &rhs)
 TObject assignment operator. More...
 
virtual void Pop ()
 Pop on object drawn in a pad to the top of the display list. More...
 
virtual Int_t Read (const char *name)
 Read contents of object with specified name from the current directory. More...
 
virtual void RecursiveRemove (TObject *obj)
 Recursively remove this object from a list. More...
 
void ResetBit (UInt_t f)
 
virtual void SaveAs (const char *filename="", Option_t *option="") const
 Save this object in the file specified by filename. More...
 
void SetBit (UInt_t f)
 
void SetBit (UInt_t f, Bool_t set)
 Set or unset the user status bits as specified in f. More...
 
virtual void SetDrawOption (Option_t *option="")
 Set drawing option for object. More...
 
virtual void SetUniqueID (UInt_t uid)
 Set the unique object id. More...
 
virtual void SysError (const char *method, const char *msgfmt,...) const
 Issue system error message. More...
 
R__ALWAYS_INLINE Bool_t TestBit (UInt_t f) const
 
Int_t TestBits (UInt_t f) const
 
virtual void UseCurrentStyle ()
 Set current style settings in this object This function is called when either TCanvas::UseCurrentStyle or TROOT::ForceStyle have been invoked. More...
 
virtual void Warning (const char *method, const char *msgfmt,...) const
 Issue warning message. More...
 
virtual Int_t Write (const char *name=0, Int_t option=0, Int_t bufsize=0)
 Write this object to the current directory. More...
 
virtual Int_t Write (const char *name=0, Int_t option=0, Int_t bufsize=0) const
 Write this object to the current directory. More...
 
- Public Member Functions inherited from TAttLine
 TAttLine ()
 AttLine default constructor. More...
 
 TAttLine (Color_t lcolor, Style_t lstyle, Width_t lwidth)
 AttLine normal constructor. More...
 
virtual ~TAttLine ()
 AttLine destructor. More...
 
void Copy (TAttLine &attline) const
 Copy this line attributes to a new TAttLine. More...
 
Int_t DistancetoLine (Int_t px, Int_t py, Double_t xp1, Double_t yp1, Double_t xp2, Double_t yp2)
 Compute distance from point px,py to a line. More...
 
virtual Color_t GetLineColor () const
 Return the line color. More...
 
virtual Style_t GetLineStyle () const
 Return the line style. More...
 
virtual Width_t GetLineWidth () const
 Return the line width. More...
 
virtual void Modify ()
 Change current line attributes if necessary. More...
 
virtual void ResetAttLine (Option_t *option="")
 Reset this line attributes to default values. More...
 
virtual void SaveLineAttributes (std::ostream &out, const char *name, Int_t coldef=1, Int_t stydef=1, Int_t widdef=1)
 Save line attributes as C++ statement(s) on output stream out. More...
 
virtual void SetLineAttributes ()
 Invoke the DialogCanvas Line attributes. More...
 
virtual void SetLineColor (Color_t lcolor)
 Set the line color. More...
 
virtual void SetLineColorAlpha (Color_t lcolor, Float_t lalpha)
 Set a transparent line color. More...
 
virtual void SetLineStyle (Style_t lstyle)
 Set the line style. More...
 
virtual void SetLineWidth (Width_t lwidth)
 Set the line width. More...
 
- Public Member Functions inherited from TAttFill
 TAttFill ()
 AttFill default constructor. More...
 
 TAttFill (Color_t fcolor, Style_t fstyle)
 AttFill normal constructor. More...
 
virtual ~TAttFill ()
 AttFill destructor. More...
 
void Copy (TAttFill &attfill) const
 Copy this fill attributes to a new TAttFill. More...
 
virtual Color_t GetFillColor () const
 Return the fill area color. More...
 
virtual Style_t GetFillStyle () const
 Return the fill area style. More...
 
virtual Bool_t IsTransparent () const
 
virtual void Modify ()
 Change current fill area attributes if necessary. More...
 
virtual void ResetAttFill (Option_t *option="")
 Reset this fill attributes to default values. More...
 
virtual void SaveFillAttributes (std::ostream &out, const char *name, Int_t coldef=1, Int_t stydef=1001)
 Save fill attributes as C++ statement(s) on output stream out. More...
 
virtual void SetFillAttributes ()
 Invoke the DialogCanvas Fill attributes. More...
 
virtual void SetFillColor (Color_t fcolor)
 Set the fill area color. More...
 
virtual void SetFillColorAlpha (Color_t fcolor, Float_t falpha)
 Set a transparent fill color. More...
 
virtual void SetFillStyle (Style_t fstyle)
 Set the fill area style. More...
 
- Public Member Functions inherited from TAttMarker
 TAttMarker ()
 TAttMarker default constructor. More...
 
 TAttMarker (Color_t color, Style_t style, Size_t msize)
 TAttMarker normal constructor. More...
 
virtual ~TAttMarker ()
 TAttMarker destructor. More...
 
void Copy (TAttMarker &attmarker) const
 Copy this marker attributes to a new TAttMarker. More...
 
virtual Color_t GetMarkerColor () const
 Return the marker color. More...
 
virtual Size_t GetMarkerSize () const
 Return the marker size. More...
 
virtual Style_t GetMarkerStyle () const
 Return the marker style. More...
 
virtual void Modify ()
 Change current marker attributes if necessary. More...
 
virtual void ResetAttMarker (Option_t *toption="")
 Reset this marker attributes to the default values. More...
 
virtual void SaveMarkerAttributes (std::ostream &out, const char *name, Int_t coldef=1, Int_t stydef=1, Int_t sizdef=1)
 Save line attributes as C++ statement(s) on output stream out. More...
 
virtual void SetMarkerAttributes ()
 Invoke the DialogCanvas Marker attributes. More...
 
virtual void SetMarkerColor (Color_t mcolor=1)
 Set the marker color. More...
 
virtual void SetMarkerColorAlpha (Color_t mcolor, Float_t malpha)
 Set a transparent marker color. More...
 
virtual void SetMarkerSize (Size_t msize=1)
 Set the marker size. More...
 
virtual void SetMarkerStyle (Style_t mstyle=1)
 Set the marker style. More...
 

Protected Attributes

Double_tfEX
 [fNpoints] array of X errors More...
 
Double_tfEY
 [fNpoints] array of Y errors More...
 
Double_tfEZ
 [fNpoints] array of Z errors More...
 
- Protected Attributes inherited from TGraph2D
TObjectfDelaunay
 ! Pointer to Delaunay interpolator object More...
 
TDirectoryfDirectory
 !Pointer to directory holding this 2D graph More...
 
TListfFunctions
 Pointer to list of functions (fits and user) More...
 
TH2DfHistogram
 !2D histogram of z values linearly interpolated on the triangles More...
 
Double_t fMargin
 Extra space (in %) around interpolated area for fHistogram. More...
 
Double_t fMaximum
 Maximum value for plotting along z. More...
 
Int_t fMaxIter
 Maximum number of iterations to find Delaunay triangles. More...
 
Double_t fMinimum
 Minimum value for plotting along z. More...
 
Int_t fNpoints
 Number of points in the data set. More...
 
Int_t fNpx
 Number of bins along X in fHistogram. More...
 
Int_t fNpy
 Number of bins along Y in fHistogram. More...
 
TVirtualHistPainterfPainter
 !Pointer to histogram painter More...
 
Int_t fSize
 !Real size of fX, fY and fZ More...
 
Double_tfX
 [fNpoints] More...
 
Double_tfY
 [fNpoints] Data set to be plotted More...
 
Double_tfZ
 [fNpoints] More...
 
Double_t fZout
 fHistogram bin height for points lying outside the interpolated area More...
 
- Protected Attributes inherited from TNamed
TString fName
 
TString fTitle
 
- Protected Attributes inherited from TAttLine
Color_t fLineColor
 Line color. More...
 
Style_t fLineStyle
 Line style. More...
 
Width_t fLineWidth
 Line width. More...
 
- Protected Attributes inherited from TAttFill
Color_t fFillColor
 Fill area color. More...
 
Style_t fFillStyle
 Fill area style. More...
 
- Protected Attributes inherited from TAttMarker
Color_t fMarkerColor
 Marker color. More...
 
Size_t fMarkerSize
 Marker size. More...
 
Style_t fMarkerStyle
 Marker style. More...
 

Additional Inherited Members

- Public Types inherited from TObject
enum  {
  kIsOnHeap = 0x01000000, kNotDeleted = 0x02000000, kZombie = 0x04000000, kInconsistent = 0x08000000,
  kBitMask = 0x00ffffff
}
 
enum  { kSingleKey = BIT(0), kOverwrite = BIT(1), kWriteDelete = BIT(2) }
 
enum  EDeprecatedStatusBits { kObjInCanvas = BIT(3) }
 
enum  EStatusBits {
  kCanDelete = BIT(0), kMustCleanup = BIT(3), kIsReferenced = BIT(4), kHasUUID = BIT(5),
  kCannotPick = BIT(6), kNoContextMenu = BIT(8), kInvalidObject = BIT(13)
}
 
- Static Public Member Functions inherited from TObject
static Long_t GetDtorOnly ()
 Return destructor only flag. More...
 
static Bool_t GetObjectStat ()
 Get status of object stat flag. More...
 
static void SetDtorOnly (void *obj)
 Set destructor only flag. More...
 
static void SetObjectStat (Bool_t stat)
 Turn on/off tracking of objects in the TObjectTable. More...
 
- Static Public Member Functions inherited from TAttMarker
static Width_t GetMarkerLineWidth (Style_t style)
 Internal helper function that returns the line width of the given marker style (0 = filled marker) More...
 
static Style_t GetMarkerStyleBase (Style_t style)
 Internal helper function that returns the corresponding marker style with line width 1 for the given style. More...
 
- Protected Member Functions inherited from TGraph2D
void Build (Int_t n)
 Creates the 2D graph basic data structure. More...
 
- Protected Member Functions inherited from TObject
virtual void DoError (int level, const char *location, const char *fmt, va_list va) const
 Interface to ErrorHandler (protected). More...
 
void MakeZombie ()
 

#include <TGraph2DErrors.h>

Inheritance diagram for TGraph2DErrors:
[legend]

Constructor & Destructor Documentation

◆ TGraph2DErrors() [1/4]

TGraph2DErrors::TGraph2DErrors ( )

TGraph2DErrors default constructor.

Definition at line 81 of file TGraph2DErrors.cxx.

◆ TGraph2DErrors() [2/4]

TGraph2DErrors::TGraph2DErrors ( Int_t  n)

TGraph2DErrors normal constructor the arrays are preset to zero.

Definition at line 93 of file TGraph2DErrors.cxx.

◆ TGraph2DErrors() [3/4]

TGraph2DErrors::TGraph2DErrors ( Int_t  n,
Double_t x,
Double_t y,
Double_t z,
Double_t ex = 0,
Double_t ey = 0,
Double_t ez = 0,
Option_t option = "" 
)

TGraph2DErrors constructor with doubles vectors as input.

Definition at line 116 of file TGraph2DErrors.cxx.

◆ TGraph2DErrors() [4/4]

TGraph2DErrors::TGraph2DErrors ( const TGraph2DErrors g)

Copy constructor.

Copy everything except list of functions

Definition at line 154 of file TGraph2DErrors.cxx.

◆ ~TGraph2DErrors()

TGraph2DErrors::~TGraph2DErrors ( )
virtual

TGraph2DErrors destructor.

Definition at line 143 of file TGraph2DErrors.cxx.

Member Function Documentation

◆ GetErrorX()

Double_t TGraph2DErrors::GetErrorX ( Int_t  i) const
virtual

This function is called by Graph2DFitChisquare.

It returns the error along X at point i.

Reimplemented from TGraph2D.

Definition at line 202 of file TGraph2DErrors.cxx.

◆ GetErrorY()

Double_t TGraph2DErrors::GetErrorY ( Int_t  i) const
virtual

This function is called by Graph2DFitChisquare.

It returns the error along X at point i.

Reimplemented from TGraph2D.

Definition at line 214 of file TGraph2DErrors.cxx.

◆ GetErrorZ()

Double_t TGraph2DErrors::GetErrorZ ( Int_t  i) const
virtual

This function is called by Graph2DFitChisquare.

It returns the error along X at point i.

Reimplemented from TGraph2D.

Definition at line 226 of file TGraph2DErrors.cxx.

◆ GetEX()

Double_t* TGraph2DErrors::GetEX ( ) const
inlinevirtual

Reimplemented from TGraph2D.

Definition at line 47 of file TGraph2DErrors.h.

◆ GetEY()

Double_t* TGraph2DErrors::GetEY ( ) const
inlinevirtual

Reimplemented from TGraph2D.

Definition at line 48 of file TGraph2DErrors.h.

◆ GetEZ()

Double_t* TGraph2DErrors::GetEZ ( ) const
inlinevirtual

Reimplemented from TGraph2D.

Definition at line 49 of file TGraph2DErrors.h.

◆ GetXmaxE()

Double_t TGraph2DErrors::GetXmaxE ( ) const
virtual

Returns the X maximum with errors.

Reimplemented from TGraph2D.

Definition at line 237 of file TGraph2DErrors.cxx.

◆ GetXminE()

Double_t TGraph2DErrors::GetXminE ( ) const
virtual

Returns the X minimum with errors.

Reimplemented from TGraph2D.

Definition at line 248 of file TGraph2DErrors.cxx.

◆ GetYmaxE()

Double_t TGraph2DErrors::GetYmaxE ( ) const
virtual

Returns the Y maximum with errors.

Reimplemented from TGraph2D.

Definition at line 259 of file TGraph2DErrors.cxx.

◆ GetYminE()

Double_t TGraph2DErrors::GetYminE ( ) const
virtual

Returns the Y minimum with errors.

Reimplemented from TGraph2D.

Definition at line 270 of file TGraph2DErrors.cxx.

◆ GetZmaxE()

Double_t TGraph2DErrors::GetZmaxE ( ) const
virtual

Returns the Z maximum with errors.

Reimplemented from TGraph2D.

Definition at line 281 of file TGraph2DErrors.cxx.

◆ GetZminE()

Double_t TGraph2DErrors::GetZminE ( ) const
virtual

Returns the Z minimum with errors.

Reimplemented from TGraph2D.

Definition at line 292 of file TGraph2DErrors.cxx.

◆ operator=()

TGraph2DErrors & TGraph2DErrors::operator= ( const TGraph2DErrors g)

Assignment operator Copy everything except list of functions.

Definition at line 173 of file TGraph2DErrors.cxx.

◆ Print()

void TGraph2DErrors::Print ( Option_t chopt = "") const
virtual

Print 2D graph and errors values.

Reimplemented from TGraph2D.

Definition at line 303 of file TGraph2DErrors.cxx.

◆ RemovePoint()

Int_t TGraph2DErrors::RemovePoint ( Int_t  ipoint)

Deletes point number ipoint.

Definition at line 326 of file TGraph2DErrors.cxx.

◆ Set()

void TGraph2DErrors::Set ( Int_t  n)
virtual

Set number of points in the 2D graph.

Existing coordinates are preserved. New coordinates above fNpoints are preset to 0.

Reimplemented from TGraph2D.

Definition at line 315 of file TGraph2DErrors.cxx.

◆ SetPoint()

void TGraph2DErrors::SetPoint ( Int_t  i,
Double_t  x,
Double_t  y,
Double_t  z 
)
virtual

Set x, y and z values for point number i.

Reimplemented from TGraph2D.

Definition at line 374 of file TGraph2DErrors.cxx.

◆ SetPointError()

void TGraph2DErrors::SetPointError ( Int_t  i,
Double_t  ex,
Double_t  ey,
Double_t  ez 
)
virtual

Set ex, ey and ez values for point number i.

Definition at line 416 of file TGraph2DErrors.cxx.

Member Data Documentation

◆ fEX

Double_t* TGraph2DErrors::fEX
protected

[fNpoints] array of X errors

Definition at line 32 of file TGraph2DErrors.h.

◆ fEY

Double_t* TGraph2DErrors::fEY
protected

[fNpoints] array of Y errors

Definition at line 33 of file TGraph2DErrors.h.

◆ fEZ

Double_t* TGraph2DErrors::fEZ
protected

[fNpoints] array of Z errors

Definition at line 34 of file TGraph2DErrors.h.

Libraries for TGraph2DErrors:
[legend]

The documentation for this class was generated from the following files:
c
#define c(i)
Definition: RSha256.hxx:101
TAttMarker::SetMarkerSize
virtual void SetMarkerSize(Size_t msize=1)
Set the marker size.
Definition: TAttMarker.h:41
ex
Double_t ex[n]
Definition: legend1.C:17
TGraph2D::Draw
virtual void Draw(Option_t *option="P0")
Specific drawing options can be used to paint a TGraph2D:
Definition: TGraph2D.cxx:712
ROOT::Math::Cephes::P
static double P[]
Definition: SpecFuncCephes.cxx:285
r
ROOT::R::TRInterface & r
Definition: Object.C:4
Int_t
int Int_t
Definition: RtypesCore.h:45
N
#define N
TAttLine::SetLineColor
virtual void SetLineColor(Color_t lcolor)
Set the line color.
Definition: TAttLine.h:40
TGraph2DErrors
Graph 2D class with errors.
Definition: TGraph2DErrors.h:26
TRandom
This is the base class for the ROOT Random number generators.
Definition: TRandom.h:27
TAttMarker::SetMarkerColor
virtual void SetMarkerColor(Color_t mcolor=1)
Set the marker color.
Definition: TAttMarker.h:38
TGraph2D::SetTitle
virtual void SetTitle(const char *title="")
Sets the 2D graph title.
Definition: TGraph2D.cxx:1803
ey
Double_t ey[n]
Definition: legend1.C:17
kRed
@ kRed
Definition: Rtypes.h:66
TGraph2DErrors::TGraph2DErrors
TGraph2DErrors()
TGraph2DErrors default constructor.
Definition: TGraph2DErrors.cxx:81
TAttLine::SetLineWidth
virtual void SetLineWidth(Width_t lwidth)
Set the line width.
Definition: TAttLine.h:43
Double_t
double Double_t
Definition: RtypesCore.h:59
TCanvas
The Canvas class.
Definition: TCanvas.h:23
TAttFill::SetFillColor
virtual void SetFillColor(Color_t fcolor)
Set the fill area color.
Definition: TAttFill.h:37
kBlue
@ kBlue
Definition: Rtypes.h:66
gPad
#define gPad
Definition: TVirtualPad.h:287
TAttMarker::SetMarkerStyle
virtual void SetMarkerStyle(Style_t mstyle=1)
Set the marker style.
Definition: TAttMarker.h:40