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->SetMarkerColor(kRed);
   dte->SetLineColor(kBlue-3);
   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.

	TGraph2DErrors (const TGraph2DErrors &)
	Copy constructor.

	TGraph2DErrors (Int_t n)
	TGraph2DErrors normal constructor the arrays are preset to zero.

	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.

virtual	~TGraph2DErrors ()
	TGraph2DErrors destructor.

Double_t	GetErrorX (Int_t bin) const
	This function is called by Graph2DFitChisquare.

Double_t	GetErrorY (Int_t bin) const
	This function is called by Graph2DFitChisquare.

Double_t	GetErrorZ (Int_t bin) const
	This function is called by Graph2DFitChisquare.

Double_t *	GetEX () const

Double_t *	GetEY () const

Double_t *	GetEZ () const

Double_t	GetXmaxE () const
	Returns the X maximum with errors.

Double_t	GetXminE () const
	Returns the X minimum with errors.

Double_t	GetYmaxE () const
	Returns the Y maximum with errors.

Double_t	GetYminE () const
	Returns the Y minimum with errors.

Double_t	GetZmaxE () const
	Returns the Z maximum with errors.

Double_t	GetZminE () const
	Returns the Z minimum with errors.

TGraph2DErrors &	operator= (const TGraph2DErrors &)
	Assignment operator Copy everything except list of functions.

virtual void	Print (Option_t *chopt="") const
	Print 2D graph and errors values.

Int_t	RemovePoint (Int_t ipoint)
	Deletes point number ipoint.

virtual void	Set (Int_t n)
	Set number of points in the 2D graph.

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.

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.

Public Member Functions inherited from TGraph2D
	TGraph2D ()
	Graph2D default constructor.

	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.

	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.

	TGraph2D (const TGraph2D &)
	Graph2D copy constructor.

	TGraph2D (Int_t n)
	Graph2D constructor.

	TGraph2D (Int_t n, Double_t x, Double_t y, Double_t *z)
	Graph2D constructor with three vectors of doubles as input.

	TGraph2D (Int_t n, Float_t x, Float_t y, Float_t *z)
	Graph2D constructor with three vectors of floats as input.

	TGraph2D (Int_t n, Int_t x, Int_t y, Int_t *z)
	Graph2D constructor with three vectors of ints as input.

	TGraph2D (TH2 *h2)
	Graph2D constructor with a TH2 (h2) as input.

virtual	~TGraph2D ()
	TGraph2D destructor.

virtual void	AddPoint (Double_t x, Double_t y, Double_t z)
	Append a new point to the graph.

virtual void	Browse (TBrowser *)
	Browse.

virtual void	Clear (Option_t *option="")
	Free all memory allocated by this object.

virtual void	DirectoryAutoAdd (TDirectory *)
	Perform the automatic addition of the graph to the given directory.

Int_t	DistancetoPrimitive (Int_t px, Int_t py)
	Computes distance from point px,py to a graph.

virtual void	Draw (Option_t *option="P0")
	Specific drawing options can be used to paint a TGraph2D:

void	ExecuteEvent (Int_t event, Int_t px, Int_t py)
	Executes action corresponding to one event.

virtual TObject *	FindObject (const char *name) const
	search object named name in the list of functions

virtual TObject *	FindObject (const TObject *obj) const
	search object obj in the list of functions

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.

virtual TFitResultPtr	Fit (TF2 f2, Option_t option="", Option_t *goption="")
	Fits this 2D graph with function f2.

virtual void	FitPanel ()
	Display a GUI panel with all graph fit options.

TList *	GetContourList (Double_t contour)
	Returns the X and Y graphs building a contour.

TDirectory *	GetDirectory () const

TH2D *	GetHistogram (Option_t *option="")
	By default returns a pointer to the Delaunay histogram.

TList *	GetListOfFunctions () 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.

Double_t *	GetX () const

TAxis *	GetXaxis () const
	Get x axis of the graph.

Double_t	GetXmax () const
	Returns the X maximum.

Double_t	GetXmin () const
	Returns the X minimum.

Double_t *	GetY () const

TAxis *	GetYaxis () const
	Get y axis of the graph.

Double_t	GetYmax () const
	Returns the Y maximum.

Double_t	GetYmin () const
	Returns the Y minimum.

Double_t *	GetZ () const

TAxis *	GetZaxis () const
	Get z axis of the graph.

Double_t	GetZmax () const
	Returns the Z maximum.

Double_t	GetZmin () const
	Returns the Z minimum.

Double_t	Interpolate (Double_t x, Double_t y)
	Finds the z value at the position (x,y) thanks to the Delaunay interpolation.

TGraph2D &	operator= (const TGraph2D &)
	Graph2D operator "=".

void	Paint (Option_t *option="")
	Paints this 2D graph with its current attributes.

TH1 *	Project (Option_t *option="x") const
	Projects a 2-d graph into 1 or 2-d histograms depending on the option parameter.

Int_t	RemovePoint (Int_t ipoint)
	Deletes point number ipoint.

virtual void	SavePrimitive (std::ostream &out, Option_t *option="")
	Saves primitive as a C++ statement(s) on output stream out.

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.

virtual void	SetHistogram (TH2 *h)
	Sets the histogram to be filled.

void	SetMargin (Double_t m=0.1)
	Sets the extra space (in %) around interpolated area for the 2D histogram.

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.

void	SetMaximum (Double_t maximum=-1111)
	Set maximum.

void	SetMaxIter (Int_t n=100000)

void	SetMinimum (Double_t minimum=-1111)
	Set minimum.

virtual void	SetName (const char *name)
	Changes the name of this 2D graph.

virtual void	SetNameTitle (const char name, const char title)
	Change the name and title of this 2D graph.

void	SetNpx (Int_t npx=40)
	Sets the number of bins along X used to draw the function.

void	SetNpy (Int_t npx=40)
	Sets the number of bins along Y used to draw the function.

virtual void	SetTitle (const char *title="")
	Sets the 2D graph title.

Public Member Functions inherited from TNamed
	TNamed ()

	TNamed (const char name, const char title)

	TNamed (const TNamed &named)
	TNamed copy ctor.

	TNamed (const TString &name, const TString &title)

virtual	~TNamed ()
	TNamed destructor.

virtual TObject *	Clone (const char *newname="") const
	Make a clone of an object using the Streamer facility.

virtual Int_t	Compare (const TObject *obj) const
	Compare two TNamed objects.

virtual void	Copy (TObject &named) const
	Copy this to obj.

virtual void	FillBuffer (char *&buffer)
	Encode TNamed into output buffer.

virtual const char *	GetName () const
	Returns name of object.

virtual const char *	GetTitle () const
	Returns title of object.

virtual ULong_t	Hash () const
	Return hash value for this object.

virtual Bool_t	IsSortable () const

virtual void	ls (Option_t *option="") const
	List TNamed name and title.

TNamed &	operator= (const TNamed &rhs)
	TNamed assignment operator.

virtual Int_t	Sizeof () const
	Return size of the TNamed part of the TObject.

Public Member Functions inherited from TObject
	TObject ()
	TObject constructor.

	TObject (const TObject &object)
	TObject copy ctor.

virtual	~TObject ()
	TObject destructor.

void	AbstractMethod (const char *method) const
	Use this method to implement an "abstract" method that you don't want to leave purely abstract.

virtual void	AppendPad (Option_t *option="")
	Append graphics object to current pad.

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.

virtual const char *	ClassName () const
	Returns name of class to which the object belongs.

virtual void	Delete (Option_t *option="")
	Delete this object.

virtual void	DrawClass () const
	Draw class inheritance tree of the class to which this object belongs.

virtual TObject *	DrawClone (Option_t *option="") const
	Draw a clone of this object in the current selected pad for instance with: `gROOT->SetSelectedPad(gPad)`.

virtual void	Dump () const
	Dump contents of object on stdout.

virtual void	Error (const char method, const char msgfmt,...) const
	Issue error message.

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.

virtual void	Execute (TMethod method, TObjArray params, Int_t *error=0)
	Execute method on this object with parameters stored in the TObjArray.

virtual void	Fatal (const char method, const char msgfmt,...) const
	Issue fatal error message.

virtual Option_t *	GetDrawOption () const
	Get option used by the graphics system to draw this object.

virtual const char *	GetIconName () const
	Returns mime type name of object.

virtual char *	GetObjectInfo (Int_t px, Int_t py) const
	Returns string containing info about the object at position (px,py).

virtual Option_t *	GetOption () const

virtual UInt_t	GetUniqueID () const
	Return the unique object id.

virtual Bool_t	HandleTimer (TTimer *timer)
	Execute action in response of a timer timing out.

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.

virtual void	Info (const char method, const char msgfmt,...) const
	Issue info message.

virtual Bool_t	InheritsFrom (const char *classname) const
	Returns kTRUE if object inherits from class "classname".

virtual Bool_t	InheritsFrom (const TClass *cl) const
	Returns kTRUE if object inherits from TClass cl.

virtual void	Inspect () const
	Dump contents of this object in a graphics canvas.

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).

virtual Bool_t	IsFolder () const
	Returns kTRUE in case object contains browsable objects (like containers or lists of other objects).

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).

virtual Bool_t	Notify ()
	This method must be overridden to handle object notification.

void	Obsolete (const char method, const char asOfVers, const char *removedFromVers) const
	Use this method to declare a method obsolete.

void	operator delete (void *ptr)
	Operator delete.

void	operator delete[] (void *ptr)
	Operator delete [].

void *	operator new (size_t sz)

void *	operator new (size_t sz, void *vp)

void *	operator new[] (size_t sz)

void *	operator new[] (size_t sz, void *vp)

TObject &	operator= (const TObject &rhs)
	TObject assignment operator.

virtual void	Pop ()
	Pop on object drawn in a pad to the top of the display list.

virtual Int_t	Read (const char *name)
	Read contents of object with specified name from the current directory.

virtual void	RecursiveRemove (TObject *obj)
	Recursively remove this object from a list.

void	ResetBit (UInt_t f)

virtual void	SaveAs (const char filename="", Option_t option="") const
	Save this object in the file specified by filename.

void	SetBit (UInt_t f)

void	SetBit (UInt_t f, Bool_t set)
	Set or unset the user status bits as specified in f.

virtual void	SetDrawOption (Option_t *option="")
	Set drawing option for object.

virtual void	SetUniqueID (UInt_t uid)
	Set the unique object id.

virtual void	SysError (const char method, const char msgfmt,...) const
	Issue system error message.

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.

virtual void	Warning (const char method, const char msgfmt,...) const
	Issue warning message.

virtual Int_t	Write (const char *name=0, Int_t option=0, Int_t bufsize=0)
	Write this object to the current directory.

virtual Int_t	Write (const char *name=0, Int_t option=0, Int_t bufsize=0) const
	Write this object to the current directory.

Public Member Functions inherited from TAttLine
	TAttLine ()
	AttLine default constructor.

	TAttLine (Color_t lcolor, Style_t lstyle, Width_t lwidth)
	AttLine normal constructor.

virtual	~TAttLine ()
	AttLine destructor.

void	Copy (TAttLine &attline) const
	Copy this line attributes to a new TAttLine.

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.

virtual Color_t	GetLineColor () const
	Return the line color.

virtual Style_t	GetLineStyle () const
	Return the line style.

virtual Width_t	GetLineWidth () const
	Return the line width.

virtual void	Modify ()
	Change current line attributes if necessary.

virtual void	ResetAttLine (Option_t *option="")
	Reset this line attributes to default values.

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.

virtual void	SetLineAttributes ()
	Invoke the DialogCanvas Line attributes.

virtual void	SetLineColor (Color_t lcolor)
	Set the line color.

virtual void	SetLineColorAlpha (Color_t lcolor, Float_t lalpha)
	Set a transparent line color.

virtual void	SetLineStyle (Style_t lstyle)
	Set the line style.

virtual void	SetLineWidth (Width_t lwidth)
	Set the line width.

Public Member Functions inherited from TAttFill
	TAttFill ()
	AttFill default constructor.

	TAttFill (Color_t fcolor, Style_t fstyle)
	AttFill normal constructor.

virtual	~TAttFill ()
	AttFill destructor.

void	Copy (TAttFill &attfill) const
	Copy this fill attributes to a new TAttFill.

virtual Color_t	GetFillColor () const
	Return the fill area color.

virtual Style_t	GetFillStyle () const
	Return the fill area style.

virtual Bool_t	IsTransparent () const

virtual void	Modify ()
	Change current fill area attributes if necessary.

virtual void	ResetAttFill (Option_t *option="")
	Reset this fill attributes to default values.

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.

virtual void	SetFillAttributes ()
	Invoke the DialogCanvas Fill attributes.

virtual void	SetFillColor (Color_t fcolor)
	Set the fill area color.

virtual void	SetFillColorAlpha (Color_t fcolor, Float_t falpha)
	Set a transparent fill color.

virtual void	SetFillStyle (Style_t fstyle)
	Set the fill area style.

Public Member Functions inherited from TAttMarker
	TAttMarker ()
	TAttMarker default constructor.

	TAttMarker (Color_t color, Style_t style, Size_t msize)
	TAttMarker normal constructor.

virtual	~TAttMarker ()
	TAttMarker destructor.

void	Copy (TAttMarker &attmarker) const
	Copy this marker attributes to a new TAttMarker.

virtual Color_t	GetMarkerColor () const
	Return the marker color.

virtual Size_t	GetMarkerSize () const
	Return the marker size.

virtual Style_t	GetMarkerStyle () const
	Return the marker style.

virtual void	Modify ()
	Change current marker attributes if necessary.

virtual void	ResetAttMarker (Option_t *toption="")
	Reset this marker attributes to the default values.

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.

virtual void	SetMarkerAttributes ()
	Invoke the DialogCanvas Marker attributes.

virtual void	SetMarkerColor (Color_t mcolor=1)
	Set the marker color.

virtual void	SetMarkerColorAlpha (Color_t mcolor, Float_t malpha)
	Set a transparent marker color.

virtual void	SetMarkerSize (Size_t msize=1)
	Set the marker size.

virtual void	SetMarkerStyle (Style_t mstyle=1)
	Set the marker style.

Protected Attributes
Double_t *	fEX
	[fNpoints] array of X errors

Double_t *	fEY
	[fNpoints] array of Y errors

Double_t *	fEZ
	[fNpoints] array of Z errors

Protected Attributes inherited from TGraph2D
TObject *	fDelaunay
	! Pointer to Delaunay interpolator object

TDirectory *	fDirectory
	!Pointer to directory holding this 2D graph

TList *	fFunctions
	Pointer to list of functions (fits and user)

TH2D *	fHistogram
	!2D histogram of z values linearly interpolated on the triangles

Double_t	fMargin
	Extra space (in %) around interpolated area for fHistogram.

Double_t	fMaximum
	Maximum value for plotting along z.

Int_t	fMaxIter
	Maximum number of iterations to find Delaunay triangles.

Double_t	fMinimum
	Minimum value for plotting along z.

Int_t	fNpoints
	Number of points in the data set.

Int_t	fNpx
	Number of bins along X in fHistogram.

Int_t	fNpy
	Number of bins along Y in fHistogram.

TVirtualHistPainter *	fPainter
	!Pointer to histogram painter

Int_t	fSize
	!Real size of fX, fY and fZ

Double_t *	fX
	[fNpoints]

Double_t *	fY
	[fNpoints] Data set to be plotted

Double_t *	fZ
	[fNpoints]

Double_t	fZout
	fHistogram bin height for points lying outside the interpolated area

Protected Attributes inherited from TNamed
TString	fName

TString	fTitle

Protected Attributes inherited from TAttLine
Color_t	fLineColor
	Line color.

Style_t	fLineStyle
	Line style.

Width_t	fLineWidth
	Line width.

Protected Attributes inherited from TAttFill
Color_t	fFillColor
	Fill area color.

Style_t	fFillStyle
	Fill area style.

Protected Attributes inherited from TAttMarker
Color_t	fMarkerColor
	Marker color.

Size_t	fMarkerSize
	Marker size.

Style_t	fMarkerStyle
	Marker style.

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.

static Bool_t	GetObjectStat ()
	Get status of object stat flag.

static void	SetDtorOnly (void *obj)
	Set destructor only flag.

static void	SetObjectStat (Bool_t stat)
	Turn on/off tracking of objects in the TObjectTable.

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)

static Style_t	GetMarkerStyleBase (Style_t style)
	Internal helper function that returns the corresponding marker style with line width 1 for the given style.

Protected Types inherited from TObject
enum	{ kOnlyPrepStep = BIT(3) }

Protected Member Functions inherited from TGraph2D
void	Build (Int_t n)
	Creates the 2D graph basic data structure.

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).

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:

hist/hist/inc/TGraph2DErrors.h
hist/hist/src/TGraph2DErrors.cxx

Public Member Functions

Protected Attributes

Additional Inherited Members

Constructor & Destructor Documentation

◆ TGraph2DErrors() [1/4]

◆ TGraph2DErrors() [2/4]

◆ TGraph2DErrors() [3/4]

◆ TGraph2DErrors() [4/4]

◆ ~TGraph2DErrors()

Member Function Documentation

◆ GetErrorX()

◆ GetErrorY()

◆ GetErrorZ()

◆ GetEX()

◆ GetEY()

◆ GetEZ()

◆ GetXmaxE()

◆ GetXminE()

◆ GetYmaxE()

◆ GetYminE()

◆ GetZmaxE()

◆ GetZminE()

◆ operator=()

◆ Print()

◆ RemovePoint()

◆ Set()

◆ SetPoint()

◆ SetPointError()

Member Data Documentation

◆ fEX

◆ fEY

◆ fEZ