TGraphPolar Class Reference

To draw a polar graph.

TGraphPolar creates a polar graph (including error bars). A TGraphPolar is a TGraphErrors represented in polar coordinates. It uses the class TGraphPolargram to draw the polar axis.

Example:

{
   TCanvas * CPol = new TCanvas("CPol","TGraphPolar Example",500,500);
 
   Double_t theta[8];
   Double_t radius[8];
   Double_t etheta[8];
   Double_t eradius[8];
 
   for (int i=0; i<8; i++) {
      theta[i]   = (i+1)*(TMath::Pi()/4.);
      radius[i]  = (i+1)*0.05;
      etheta[i]  = TMath::Pi()/8.;
      eradius[i] = 0.05;
   }
 
   TGraphPolar * grP1 = new TGraphPolar(8, theta, radius, etheta, eradius);
   grP1->SetTitle("TGraphPolar Example");
 
   grP1->SetMarkerStyle(20);
   grP1->SetMarkerSize(2.);
   grP1->SetMarkerColor(4);
   grP1->SetLineColor(2);
   grP1->SetLineWidth(3);
   grP1->Draw("PE");
 
   // Update, otherwise GetPolargram returns 0
   CPol->Update();
   grP1->GetPolargram()->SetToRadian();
 
   return CPol;
}

Definition at line 23 of file TGraphPolar.h.

Public Member Functions
	TGraphPolar ()
	TGraphPolar default constructor.
	TGraphPolar (Int_t n, const Double_t *theta=0, const Double_t *r=0, const Double_t *etheta=0, const Double_t *er=0)
	TGraphPolar constructor.
virtual	~TGraphPolar ()
	TGraphPolar destructor.
void	Draw (Option_t *options="")
	Draw TGraphPolar.
Bool_t	GetOptionAxis ()
TGraphPolargram *	GetPolargram ()
Double_t *	GetXpol ()
	Return points in polar coordinates.
Double_t *	GetYpol ()
	Return points in polar coordinates.
void	SetMaximum (Double_t maximum=1)
	Set the maximum of the graph.
void	SetMaxPolar (Double_t maximum=6.28318530717958623)
	Set maximum Polar.
void	SetMaxRadial (Double_t maximum=1)
	Set maximum radial at the intersection of the positive X axis part and the circle.
void	SetMinimum (Double_t minimum=0)
	Set the minimum of the graph.
void	SetMinPolar (Double_t minimum=0)
	Set minimum Polar.
void	SetMinRadial (Double_t minimum=0)
	Set minimum radial in the center of the circle.
void	SetOptionAxis (Bool_t opt)
void	SetPolargram (TGraphPolargram *p)
Public Member Functions inherited from TGraphErrors
	TGraphErrors ()
	TGraphErrors default constructor.
	TGraphErrors (const char *filename, const char *format="%lg %lg %lg %lg", Option_t *option="")
	GraphErrors constructor reading input from filename.
	TGraphErrors (const TGraphErrors &gr)
	TGraphErrors copy constructor.
	TGraphErrors (const TH1 *h)
	TGraphErrors constructor importing its parameters from the TH1 object passed as argument.
	TGraphErrors (const TVectorD &vx, const TVectorD &vy, const TVectorD &vex, const TVectorD &vey)
	Constructor with four vectors of doubles in input.
	TGraphErrors (const TVectorF &vx, const TVectorF &vy, const TVectorF &vex, const TVectorF &vey)
	Constructor with four vectors of floats in input.
	TGraphErrors (Int_t n)
	TGraphErrors normal constructor.
	TGraphErrors (Int_t n, const Double_t *x, const Double_t *y, const Double_t *ex=0, const Double_t *ey=0)
	TGraphErrors normal constructor.
	TGraphErrors (Int_t n, const Float_t *x, const Float_t *y, const Float_t *ex=0, const Float_t *ey=0)
	TGraphErrors normal constructor.
virtual	~TGraphErrors ()
	TGraphErrors default destructor.
virtual void	Apply (TF1 *f)
	Apply function to all the data points \( y = f(x,y) \).
virtual void	ApplyX (TF1 *f)
	Apply function to all the data points \( x = f(x,y) \).
virtual void	ComputeRange (Double_t &xmin, Double_t &ymin, Double_t &xmax, Double_t &ymax) const
	Compute range.
Double_t	GetErrorX (Int_t bin) const
	It returns the error along X at point i.
Double_t	GetErrorXhigh (Int_t bin) const
	It returns the error along X at point i.
Double_t	GetErrorXlow (Int_t bin) const
	It returns the error along X at point i.
Double_t	GetErrorY (Int_t bin) const
	It returns the error along Y at point i.
Double_t	GetErrorYhigh (Int_t bin) const
	It returns the error along Y at point i.
Double_t	GetErrorYlow (Int_t bin) const
	It returns the error along Y at point i.
Double_t *	GetEX () const
Double_t *	GetEY () const
virtual Int_t	Merge (TCollection *list)
	Adds all graphs with errors from the collection to this graph.
TGraphErrors &	operator= (const TGraphErrors &gr)
	TGraphErrors assignment operator.
virtual void	Print (Option_t *chopt="") const
	Print graph and errors values.
virtual void	SavePrimitive (std::ostream &out, Option_t *option="")
	Save primitive as a C++ statement(s) on output stream out.
virtual void	Scale (Double_t c1=1., Option_t *option="y")
	Multiply the values and errors of a TGraphErrors by a constant c1.
virtual void	SetPointError (Double_t ex, Double_t ey)
	Set ex and ey values for point pointed by the mouse.
virtual void	SetPointError (Int_t i, Double_t ex, Double_t ey)
	Set ex and ey values for point number i.
Public Member Functions inherited from TGraph
	TGraph ()
	Graph default constructor.
	TGraph (const char *filename, const char *format="%lg %lg", Option_t *option="")
	Graph constructor reading input from filename.
	TGraph (const TF1 *f, Option_t *option="")
	Graph constructor importing its parameters from the TF1 object passed as argument.
	TGraph (const TGraph &gr)
	Copy constructor for this graph.
	TGraph (const TH1 *h)
	Graph constructor importing its parameters from the TH1 object passed as argument.
	TGraph (const TVectorD &vx, const TVectorD &vy)
	Graph constructor with two vectors of doubles in input A graph is build with the X coordinates taken from vx and Y coord from vy The number of points in the graph is the minimum of number of points in vx and vy.
	TGraph (const TVectorF &vx, const TVectorF &vy)
	Graph constructor with two vectors of floats in input A graph is build with the X coordinates taken from vx and Y coord from vy The number of points in the graph is the minimum of number of points in vx and vy.
	TGraph (Int_t n)
	Constructor with only the number of points set the arrays x and y will be set later.
	TGraph (Int_t n, const Double_t *x, const Double_t *y)
	Graph normal constructor with doubles.
	TGraph (Int_t n, const Float_t *x, const Float_t *y)
	Graph normal constructor with floats.
	TGraph (Int_t n, const Int_t *x, const Int_t *y)
	Graph normal constructor with ints.
virtual	~TGraph ()
	Graph default destructor.
virtual void	AddPoint (Double_t x, Double_t y)
	Append a new point to the graph.
virtual void	Browse (TBrowser *b)
	Browse.
virtual Double_t	Chisquare (TF1 *f1, Option_t *option="") const
	Return the chisquare of this graph with respect to f1.
virtual Int_t	DistancetoPrimitive (Int_t px, Int_t py)
	Compute distance from point px,py to a graph.
virtual void	DrawGraph (Int_t n, const Double_t *x=nullptr, const Double_t *y=nullptr, Option_t *option="")
	Draw this graph with new attributes.
virtual void	DrawGraph (Int_t n, const Float_t *x, const Float_t *y, Option_t *option="")
	Draw this graph with new attributes.
virtual void	DrawGraph (Int_t n, const Int_t *x, const Int_t *y, Option_t *option="")
	Draw this graph with new attributes.
virtual void	DrawPanel ()
	Display a panel with all graph drawing options.
virtual Double_t	Eval (Double_t x, TSpline *spline=nullptr, Option_t *option="") const
	Interpolate points in this graph at x using a TSpline.
virtual void	ExecuteEvent (Int_t event, Int_t px, Int_t py)
	Execute action corresponding to one event.
virtual void	Expand (Int_t newsize)
	If array sizes <= newsize, expand storage to 2*newsize.
virtual void	Expand (Int_t newsize, Int_t step)
	If graph capacity is less than newsize points then make array sizes equal to least multiple of step to contain newsize points.
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="", Axis_t xmin=0, Axis_t xmax=0)
	Fit this graph with function with name fname.
virtual TFitResultPtr	Fit (TF1 *f1, Option_t *option="", Option_t *goption="", Axis_t xmin=0, Axis_t xmax=0)
	Fit this graph with function f1.
virtual void	FitPanel ()
	Display a GUI panel with all graph fit options.
virtual Double_t	GetCorrelationFactor () const
	Return graph correlation factor.
virtual Double_t	GetCovariance () const
	Return covariance of vectors x,y.
Bool_t	GetEditable () const
	Return kTRUE if kNotEditable bit is not set, kFALSE otherwise.
virtual Double_t *	GetEXhigh () const
virtual Double_t *	GetEXhighd () const
virtual Double_t *	GetEXlow () const
virtual Double_t *	GetEXlowd () const
virtual Double_t *	GetEYhigh () const
virtual Double_t *	GetEYhighd () const
virtual Double_t *	GetEYlow () const
virtual Double_t *	GetEYlowd () const
TF1 *	GetFunction (const char *name) const
	Return pointer to function with name.
TH1F *	GetHistogram () const
	Returns a pointer to the histogram used to draw the axis Takes into account the two following cases.
TList *	GetListOfFunctions () const
Double_t	GetMaximum () const
Int_t	GetMaxSize () const
virtual Double_t	GetMean (Int_t axis=1) const
	Return mean value of X (axis=1) or Y (axis=2)
Double_t	GetMinimum () const
Int_t	GetN () const
virtual char *	GetObjectInfo (Int_t px, Int_t py) const
	Implementation to get information on point of graph at cursor position Adapted from class TH1.
virtual Int_t	GetPoint (Int_t i, Double_t &x, Double_t &y) const
	Get x and y values for point number i.
virtual Double_t	GetPointX (Int_t i) const
	Get x value for point i.
virtual Double_t	GetPointY (Int_t i) const
	Get y value for point i.
virtual Double_t	GetRMS (Int_t axis=1) const
	Return RMS of X (axis=1) or Y (axis=2)
Double_t *	GetX () const
TAxis *	GetXaxis () const
	Get x axis of the graph.
Double_t *	GetY () const
TAxis *	GetYaxis () const
	Get y axis of the graph.
virtual void	InitExpo (Double_t xmin=0, Double_t xmax=0)
	Compute Initial values of parameters for an exponential.
virtual void	InitGaus (Double_t xmin=0, Double_t xmax=0)
	Compute Initial values of parameters for a gaussian.
virtual void	InitPolynom (Double_t xmin=0, Double_t xmax=0)
	Compute Initial values of parameters for a polynom.
virtual Int_t	InsertPoint ()
	Insert a new point at the mouse position.
virtual void	InsertPointBefore (Int_t ipoint, Double_t x, Double_t y)
	Insert a new point with coordinates (x,y) before the point number ipoint.
virtual Double_t	Integral (Int_t first=0, Int_t last=-1) const
	Integrate the TGraph data within a given (index) range.
virtual Bool_t	IsEditable () const
virtual Bool_t	IsHighlight () const
virtual Int_t	IsInside (Double_t x, Double_t y) const
	Return 1 if the point (x,y) is inside the polygon defined by the graph vertices 0 otherwise.
virtual void	LeastSquareFit (Int_t m, Double_t *a, Double_t xmin=0, Double_t xmax=0)
	Least squares polynomial fitting without weights.
virtual void	LeastSquareLinearFit (Int_t n, Double_t &a0, Double_t &a1, Int_t &ifail, Double_t xmin=0, Double_t xmax=0)
	Least square linear fit without weights.
virtual void	MovePoints (Double_t dx, Double_t dy, Bool_t logx=kFALSE, Bool_t logy=kFALSE)
	Move all graph points on specified values dx,dy If log argument specified, calculation done in logarithmic scale like: new_value = exp( log(old_value) + delta );.
TGraph &	operator= (const TGraph &)
	Equal operator for this graph.
virtual void	Paint (Option_t *chopt="")
	Draw this graph with its current attributes.
void	PaintGraph (Int_t npoints, const Double_t *x, const Double_t *y, Option_t *chopt)
	Draw the (x,y) as a graph.
void	PaintGrapHist (Int_t npoints, const Double_t *x, const Double_t *y, Option_t *chopt)
	Draw the (x,y) as a histogram.
virtual void	PaintStats (TF1 *fit)
	Draw the stats.
virtual void	RecursiveRemove (TObject *obj)
	Recursively remove object from the list of functions.
virtual Int_t	RemovePoint ()
	Delete point close to the mouse position.
virtual Int_t	RemovePoint (Int_t ipoint)
	Delete point number ipoint.
virtual void	Set (Int_t n)
	Set number of points in the graph Existing coordinates are preserved New coordinates above fNpoints are preset to 0.
virtual void	SetEditable (Bool_t editable=kTRUE)
	if editable=kFALSE, the graph cannot be modified with the mouse by default a TGraph is editable
virtual void	SetHighlight (Bool_t set=kTRUE)
	Set highlight (enable/disble) mode for the graph by default highlight mode is disable.
virtual void	SetHistogram (TH1F *h)
virtual void	SetName (const char *name="")
	Set graph name.
virtual void	SetNameTitle (const char *name="", const char *title="")
	Set graph name and title.
virtual void	SetPoint (Int_t i, Double_t x, Double_t y)
	Set x and y values for point number i.
virtual void	SetPointX (Int_t i, Double_t x)
	Set x value for point i.
virtual void	SetPointY (Int_t i, Double_t y)
	Set y value for point i.
virtual void	SetStats (Bool_t stats=kTRUE)
	Set statistics option on/off.
virtual void	SetTitle (const char *title="")
	Change (i.e.
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)
	Sorts the points of this TGraph using in-place quicksort (see e.g.
virtual void	UseCurrentStyle ()
	Set current style settings in this graph This function is called when either TCanvas::UseCurrentStyle or TROOT::ForceStyle have been invoked.
void	Zero (Int_t &k, Double_t AZ, Double_t BZ, Double_t E2, Double_t &X, Double_t &Y, Int_t maxiterations)
	Find zero of a continuous function.
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 void	Clear (Option_t *option="")
	Set name and title to empty strings ("").
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 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)
Bool_t	IsDestructed () const
	IsDestructed.
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.
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	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
TGraphPolargram *	fPolargram
	The polar coordinates system.
Double_t *	fXpol
	[fNpoints] points in polar coordinates
Double_t *	fYpol
	[fNpoints] points in polar coordinates
Protected Attributes inherited from TGraphErrors
Double_t *	fEX
	[fNpoints] array of X errors
Double_t *	fEY
	[fNpoints] array of Y errors
Protected Attributes inherited from TGraph
TList *	fFunctions
	Pointer to list of functions (fits and user)
TH1F *	fHistogram
	Pointer to histogram used for drawing axis.
Double_t	fMaximum
	Maximum value for plotting along y.
Int_t	fMaxSize
	!Current dimension of arrays fX and fY
Double_t	fMinimum
	Minimum value for plotting along y.
Int_t	fNpoints
	Number of points <= fMaxSize.
Double_t *	fX
	[fNpoints] array of X points
Double_t *	fY
	[fNpoints] array of Y points
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.

Private Attributes
Bool_t	fOptionAxis
	Force drawing of new coord system.

Additional Inherited Members
Public Types inherited from TGraph
enum	EStatusBits {   kNoStats = BIT(9) , kClipFrame = BIT(10) , kResetHisto = BIT(17) , kNotEditable = BIT(18) ,   kIsSortedX = BIT(19) , kIsHighlight = BIT(20) }
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 TGraphErrors
static Int_t	CalculateScanfFields (const char *fmt)
	Calculate scan fields.
Static Public Member Functions inherited from TGraph
static Bool_t	CompareArg (const TGraph *gr, Int_t left, Int_t right)
	Return kTRUE if point number "left"'s argument (angle with respect to positive x-axis) is bigger than that of point number "right".
static Bool_t	CompareRadius (const TGraph *gr, Int_t left, Int_t right)
	Return kTRUE if point number "left"'s distance to origin is bigger than that of point number "right".
static Bool_t	CompareX (const TGraph *gr, Int_t left, Int_t right)
	Return kTRUE if fX[left] > fX[right]. Can be used by Sort.
static Bool_t	CompareY (const TGraph *gr, Int_t left, Int_t right)
	Return kTRUE if fY[left] > fY[right]. Can be used by Sort.
Static Public Member Functions inherited from TObject
static Longptr_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 TGraphErrors
virtual Double_t **	Allocate (Int_t size)
	Allocate internal data structures for newsize points.
virtual void	CopyAndRelease (Double_t **newarrays, Int_t ibegin, Int_t iend, Int_t obegin)
	Copy and release.
virtual Bool_t	CopyPoints (Double_t **arrays, Int_t ibegin, Int_t iend, Int_t obegin)
	Copy errors from fEX and fEY to arrays[0] and arrays[1] or to fEX and fEY if arrays == 0 and ibegin != iend.
Bool_t	CtorAllocate ()
	Constructor allocate.
virtual Bool_t	DoMerge (const TGraph *g)
	Protected function to perform the merge operation of a graph with errors.
virtual void	FillZero (Int_t begin, Int_t end, Bool_t from_ctor=kTRUE)
	Set zero values for point arrays in the range [begin, end].
virtual void	SwapPoints (Int_t pos1, Int_t pos2)
	Swap points.
Protected Member Functions inherited from TGraph
Double_t **	AllocateArrays (Int_t Narrays, Int_t arraySize)
	Allocate arrays.
Bool_t	CtorAllocate ()
	In constructors set fNpoints than call this method.
Double_t **	ExpandAndCopy (Int_t size, Int_t iend)
	if size > fMaxSize allocate new arrays of 2*size points and copy iend first points.
Double_t **	ShrinkAndCopy (Int_t size, Int_t iend)
	if size*2 <= fMaxSize allocate new arrays of size points, copy points [0,oend).
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 ()
Static Protected Member Functions inherited from TGraph
static void	SwapValues (Double_t *arr, Int_t pos1, Int_t pos2)
	Swap values.

#include <TGraphPolar.h>

Inheritance diagram for TGraphPolar:

Constructor & Destructor Documentation

TGraphPolar() [1/2]

TGraphPolar::TGraphPolar

(

)

TGraphPolar default constructor.

Definition at line 66 of file TGraphPolar.cxx.

TGraphPolar() [2/2]

TGraphPolar::TGraphPolar	(	Int_t	n,
		const Double_t *	theta = 0,
		const Double_t *	r = 0,
		const Double_t *	etheta = 0,
		const Double_t *	er = 0
	)

TGraphPolar constructor.

Parameters

[in]	n	number of points.
[in]	theta	angular values.
[in]	r	radial values.
[in]	etheta	errors on angular values.
[in]	er	errors on radial values.

Definition at line 80 of file TGraphPolar.cxx.

~TGraphPolar()

TGraphPolar::~TGraphPolar ( )

virtual

TGraphPolar destructor.

Definition at line 91 of file TGraphPolar.cxx.

Member Function Documentation

Draw()

void TGraphPolar::Draw ( Option_t *  options = "" )

virtual

Draw TGraphPolar.

Reimplemented from TGraph.

Definition at line 100 of file TGraphPolar.cxx.

GetOptionAxis()

Bool_t TGraphPolar::GetOptionAxis ( )

inline

Definition at line 43 of file TGraphPolar.h.

GetPolargram()

TGraphPolargram * TGraphPolar::GetPolargram ( )

inline

Definition at line 40 of file TGraphPolar.h.

GetXpol()

Double_t * TGraphPolar::GetXpol

(

)

Return points in polar coordinates.

Definition at line 119 of file TGraphPolar.cxx.

GetYpol()

Double_t * TGraphPolar::GetYpol

(

)

Return points in polar coordinates.

Definition at line 128 of file TGraphPolar.cxx.

SetMaximum()

void TGraphPolar::SetMaximum ( Double_t  maximum = 1 )

inlinevirtual

Set the maximum of the graph.

Reimplemented from TGraph.

Definition at line 46 of file TGraphPolar.h.

SetMaxPolar()

void TGraphPolar::SetMaxPolar

(

Double_t

maximum = 6.28318530717958623

)

Set maximum Polar.

Definition at line 137 of file TGraphPolar.cxx.

SetMaxRadial()

void TGraphPolar::SetMaxRadial

(

Double_t

maximum = 1

)

Set maximum radial at the intersection of the positive X axis part and the circle.

Definition at line 146 of file TGraphPolar.cxx.

SetMinimum()

void TGraphPolar::SetMinimum ( Double_t  minimum = 0 )

inlinevirtual

Set the minimum of the graph.

Reimplemented from TGraph.

Definition at line 47 of file TGraphPolar.h.

SetMinPolar()

void TGraphPolar::SetMinPolar

(

Double_t

minimum = 0

)

Set minimum Polar.

Definition at line 154 of file TGraphPolar.cxx.

SetMinRadial()

void TGraphPolar::SetMinRadial

(

Double_t

minimum = 0

)

Set minimum radial in the center of the circle.

Definition at line 162 of file TGraphPolar.cxx.

SetOptionAxis()

void TGraphPolar::SetOptionAxis ( Bool_t  opt )

inline

Definition at line 50 of file TGraphPolar.h.

SetPolargram()

void TGraphPolar::SetPolargram ( TGraphPolargram *  p )

inline

Definition at line 51 of file TGraphPolar.h.

Member Data Documentation

fOptionAxis

Bool_t TGraphPolar::fOptionAxis

private

Force drawing of new coord system.

Definition at line 26 of file TGraphPolar.h.

fPolargram

TGraphPolargram* TGraphPolar::fPolargram

protected

The polar coordinates system.

Definition at line 29 of file TGraphPolar.h.

fXpol

Double_t* TGraphPolar::fXpol

protected

[fNpoints] points in polar coordinates

Definition at line 30 of file TGraphPolar.h.

fYpol

Double_t* TGraphPolar::fYpol

protected

[fNpoints] points in polar coordinates

Definition at line 31 of file TGraphPolar.h.

Libraries for TGraphPolar:

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The documentation for this class was generated from the following files:

• graf2d/graf/inc/TGraphPolar.h
• graf2d/graf/src/TGraphPolar.cxx