class TGraphPolar: public TGraphErrors

TGraphPolar : 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.


output of MACRO_TGraphPolar_1_CPol
   TCanvas * CPol = new TCanvas("CPol","TGraphPolar Examples",500,500);

   Double_t rmin=0;
   Double_t rmax=TMath::Pi()*2;
   Double_t r[1000];
   Double_t theta[1000];

   TF1 * fp1 = new TF1("fplot","cos(x)",rmin,rmax);
   for (Int_t ipt = 0; ipt < 1000; ipt++) {
      r[ipt] = ipt*(rmax-rmin)/1000+rmin;
      theta[ipt] = fp1->Eval(r[ipt]);
   TGraphPolar * grP1 = new TGraphPolar(1000,r,theta);

   return CPol;

Function Members (Methods)

TGraphPolar(const TGraphPolar&)
TGraphPolar(Int_t n, const Double_t* x = 0, const Double_t* y = 0, const Double_t* ex = 0, const Double_t* ey = 0)
voidTObject::AbstractMethod(const char* method) const
virtual voidTObject::AppendPad(Option_t* option = "")
virtual voidTGraphErrors::Apply(TF1* f)
virtual voidTGraph::Browse(TBrowser* b)
static Int_tTGraphErrors::CalculateScanfFields(const char* fmt)
virtual Double_tTGraph::Chisquare(const TF1* f1) const
static TClass*Class()
virtual const char*TObject::ClassName() const
virtual voidTNamed::Clear(Option_t* option = "")
virtual TObject*TNamed::Clone(const char* newname = "") const
virtual Int_tTNamed::Compare(const TObject* obj) const
static Bool_tTGraph::CompareArg(const TGraph* gr, Int_t left, Int_t right)
static Bool_tTGraph::CompareRadius(const TGraph* gr, Int_t left, Int_t right)
static Bool_tTGraph::CompareX(const TGraph* gr, Int_t left, Int_t right)
static Bool_tTGraph::CompareY(const TGraph* gr, Int_t left, Int_t right)
voidTGraph::ComputeLogs(Int_t npoints, Int_t opt)
virtual voidTGraphErrors::ComputeRange(Double_t& xmin, Double_t& ymin, Double_t& xmax, Double_t& ymax) const
virtual voidTNamed::Copy(TObject& named) const
virtual voidTObject::Delete(Option_t* option = "")
Int_tTAttLine::DistancetoLine(Int_t px, Int_t py, Double_t xp1, Double_t yp1, Double_t xp2, Double_t yp2)
virtual Int_tDistancetoPrimitive(Int_t px, Int_t py)
virtual voidDraw(Option_t* options = "")
virtual voidTObject::DrawClass() const
virtual TObject*TObject::DrawClone(Option_t* option = "") const
virtual voidTGraph::DrawGraph(Int_t n, const Int_t* x, const Int_t* y, Option_t* option = "")
virtual voidTGraph::DrawGraph(Int_t n, const Float_t* x, const Float_t* y, Option_t* option = "")
virtual voidTGraph::DrawGraph(Int_t n, const Double_t* x = 0, const Double_t* y = 0, Option_t* option = "")
virtual voidTGraph::DrawPanel()
virtual voidTObject::Dump() const
virtual voidTObject::Error(const char* method, const char* msgfmt) const
virtual Double_tTGraph::Eval(Double_t x, TSpline* spline = 0, Option_t* option = "") const
virtual voidTObject::Execute(const char* method, const char* params, Int_t* error = 0)
virtual voidTObject::Execute(TMethod* method, TObjArray* params, Int_t* error = 0)
virtual voidExecuteEvent(Int_t event, Int_t px, Int_t py)
virtual voidTGraph::Expand(Int_t newsize)
virtual voidTGraph::Expand(Int_t newsize, Int_t step)
virtual voidTObject::Fatal(const char* method, const char* msgfmt) const
virtual voidTNamed::FillBuffer(char*& buffer)
virtual TObject*TGraph::FindObject(const char* name) const
virtual TObject*TGraph::FindObject(const TObject* obj) const
virtual Int_tTGraph::Fit(const char* formula, Option_t* option = "", Option_t* goption = "", Axis_t xmin = 0, Axis_t xmax = 0)
virtual Int_tTGraph::Fit(TF1* f1, Option_t* option = "", Option_t* goption = "", Axis_t xmin = 0, Axis_t xmax = 0)
virtual voidTGraph::FitPanel()
virtual Double_tTGraph::GetCorrelationFactor() const
virtual Double_tTGraph::GetCovariance() const
virtual Option_t*TObject::GetDrawOption() const
static Long_tTObject::GetDtorOnly()
Bool_tTGraph::GetEditable() const
virtual Double_tTGraphErrors::GetErrorX(Int_t bin) const
virtual Double_tTGraphErrors::GetErrorXhigh(Int_t bin) const
virtual Double_tTGraphErrors::GetErrorXlow(Int_t bin) const
virtual Double_tTGraphErrors::GetErrorY(Int_t bin) const
virtual Double_tTGraphErrors::GetErrorYhigh(Int_t bin) const
virtual Double_tTGraphErrors::GetErrorYlow(Int_t bin) const
virtual Double_t*TGraphErrors::GetEX() const
virtual Double_t*TGraph::GetEXhigh() const
virtual Double_t*TGraph::GetEXlow() const
virtual Double_t*TGraphErrors::GetEY() const
virtual Double_t*TGraph::GetEYhigh() const
virtual Double_t*TGraph::GetEYlow() const
virtual Color_tTAttFill::GetFillColor() const
virtual Style_tTAttFill::GetFillStyle() const
TF1*TGraph::GetFunction(const char* name) const
TH1F*TGraph::GetHistogram() const
virtual const char*TObject::GetIconName() const
virtual Color_tTAttLine::GetLineColor() const
virtual Style_tTAttLine::GetLineStyle() const
virtual Width_tTAttLine::GetLineWidth() const
TList*TGraph::GetListOfFunctions() const
virtual Color_tTAttMarker::GetMarkerColor() const
virtual Size_tTAttMarker::GetMarkerSize() const
virtual Style_tTAttMarker::GetMarkerStyle() const
Int_tTGraph::GetMaxSize() const
virtual Double_tTGraph::GetMean(Int_t axis = 1) const
Int_tTGraph::GetN() const
virtual const char*TNamed::GetName() const
virtual char*TObject::GetObjectInfo(Int_t px, Int_t py) const
static Bool_tTObject::GetObjectStat()
virtual Option_t*TObject::GetOption() const
virtual voidTGraph::GetPoint(Int_t i, Double_t& x, Double_t& y) const
virtual Double_tTGraph::GetRMS(Int_t axis = 1) const
virtual const char*TNamed::GetTitle() const
virtual UInt_tTObject::GetUniqueID() const
Double_t*TGraph::GetX() const
TAxis*TGraph::GetXaxis() const
Double_t*TGraph::GetY() const
TAxis*TGraph::GetYaxis() const
virtual Bool_tTObject::HandleTimer(TTimer* timer)
virtual ULong_tTNamed::Hash() const
virtual voidTObject::Info(const char* method, const char* msgfmt) const
virtual Bool_tTObject::InheritsFrom(const char* classname) const
virtual Bool_tTObject::InheritsFrom(const TClass* cl) const
virtual voidTGraph::InitExpo(Double_t xmin = 0, Double_t xmax = 0)
virtual voidTGraph::InitGaus(Double_t xmin = 0, Double_t xmax = 0)
virtual voidTGraph::InitPolynom(Double_t xmin = 0, Double_t xmax = 0)
virtual Int_tTGraph::InsertPoint()
virtual voidTObject::Inspect() const
voidTObject::InvertBit(UInt_t f)
virtual TClass*IsA() const
virtual Bool_tTGraph::IsEditable() const
virtual Bool_tTObject::IsEqual(const TObject* obj) const
virtual Bool_tTObject::IsFolder() const
Bool_tTObject::IsOnHeap() const
virtual Bool_tTNamed::IsSortable() const
virtual Bool_tTAttFill::IsTransparent() const
Bool_tTObject::IsZombie() const
virtual voidTGraph::LeastSquareFit(Int_t m, Double_t* a, Double_t xmin = 0, Double_t xmax = 0)
virtual voidTGraph::LeastSquareLinearFit(Int_t n, Double_t& a0, Double_t& a1, Int_t& ifail, Double_t xmin = 0, Double_t xmax = 0)
virtual voidTNamed::ls(Option_t* option = "") const
voidTObject::MayNotUse(const char* method) const
virtual Int_tTGraph::Merge(TCollection* list)
virtual voidTAttLine::Modify()
virtual Bool_tTObject::Notify()
static voidTObject::operator delete(void* ptr)
static voidTObject::operator delete(void* ptr, void* vp)
static voidTObject::operator delete[](void* ptr)
static voidTObject::operator delete[](void* ptr, void* vp)
void*TObject::operator new(size_t sz)
void*TObject::operator new(size_t sz, void* vp)
void*TObject::operator new[](size_t sz)
void*TObject::operator new[](size_t sz, void* vp)
TGraphPolar&operator=(const TGraphPolar&)
virtual voidTGraph::PaintFit(TF1* fit)
virtual voidTGraph::PaintGraph(Int_t npoints, const Double_t* x, const Double_t* y, Option_t* option = "")
virtual voidTGraph::PaintGrapHist(Int_t npoints, const Double_t* x, const Double_t* y, Option_t* option = "")
virtual voidTGraph::PaintPolyLineHatches(Int_t n, const Double_t* x, const Double_t* y)
virtual voidTObject::Pop()
virtual voidTGraphErrors::Print(Option_t* chopt = "") const
virtual Int_tTObject::Read(const char* name)
virtual voidTGraph::RecursiveRemove(TObject* obj)
virtual Int_tTGraph::RemovePoint()
virtual Int_tTGraph::RemovePoint(Int_t ipoint)
virtual voidTAttFill::ResetAttFill(Option_t* option = "")
virtual voidTAttLine::ResetAttLine(Option_t* option = "")
virtual voidTAttMarker::ResetAttMarker(Option_t* toption = "")
voidTObject::ResetBit(UInt_t f)
virtual voidTObject::SaveAs(const char* filename = "", Option_t* option = "") const
virtual voidTAttFill::SaveFillAttributes(ostream& out, const char* name, Int_t coldef = 1, Int_t stydef = 1001)
virtual voidTAttLine::SaveLineAttributes(ostream& out, const char* name, Int_t coldef = 1, Int_t stydef = 1, Int_t widdef = 1)
virtual voidTAttMarker::SaveMarkerAttributes(ostream& out, const char* name, Int_t coldef = 1, Int_t stydef = 1, Int_t sizdef = 1)
virtual voidTGraphErrors::SavePrimitive(ostream& out, Option_t* option = "")
virtual voidTGraph::Set(Int_t n)
voidTObject::SetBit(UInt_t f)
voidTObject::SetBit(UInt_t f, Bool_t set)
virtual voidTObject::SetDrawOption(Option_t* option = "")
static voidTObject::SetDtorOnly(void* obj)
virtual voidTGraph::SetEditable(Bool_t editable = kTRUE)
virtual voidTAttFill::SetFillAttributes()
virtual voidTAttFill::SetFillColor(Color_t fcolor)
virtual voidTAttFill::SetFillStyle(Style_t fstyle)
virtual voidTGraph::SetHistogram(TH1* h)
virtual voidTAttLine::SetLineAttributes()
virtual voidTAttLine::SetLineColor(Color_t lcolor)
virtual voidTAttLine::SetLineStyle(Style_t lstyle)
virtual voidTAttLine::SetLineWidth(Width_t lwidth)
virtual voidTAttMarker::SetMarkerAttributes()
virtual voidTAttMarker::SetMarkerColor(Color_t tcolor = 1)
virtual voidTAttMarker::SetMarkerSize(Size_t msize = 1)
virtual voidTAttMarker::SetMarkerStyle(Style_t mstyle = 1)
virtual voidSetMaximum(Double_t maximum = 1)
voidSetMaxPolar(Double_t maximum = 6.28318530717958623)
voidSetMaxRadial(Double_t maximum = 1)
virtual voidSetMinimum(Double_t minimum = 0)
voidSetMinPolar(Double_t minimum = 0)
voidSetMinRadial(Double_t minimum = 0)
virtual voidTNamed::SetName(const char* name)
virtual voidTNamed::SetNameTitle(const char* name, const char* title)
static voidTObject::SetObjectStat(Bool_t stat)
virtual voidTGraph::SetPoint(Int_t i, Double_t x, Double_t y)
virtual voidTGraphErrors::SetPointError(Double_t ex, Double_t ey)
virtual voidTGraphErrors::SetPointError(Int_t i, Double_t ex, Double_t ey)
virtual voidTGraph::SetTitle(const char* title = "")
virtual voidTObject::SetUniqueID(UInt_t uid)
virtual voidShowMembers(TMemberInspector& insp, char* parent)
virtual Int_tTNamed::Sizeof() const
voidTGraph::Smooth(Int_t npoints, Double_t* x, Double_t* y, Int_t drawtype)
virtual voidTGraph::Sort(Bool_t (*)(const TGraph*, Int_t, Int_t) greater = &TGraph::CompareX, Bool_t ascending = kTRUE, Int_t low = 0, Int_t high = -1111)
virtual voidStreamer(TBuffer& b)
voidStreamerNVirtual(TBuffer& b)
virtual voidTObject::SysError(const char* method, const char* msgfmt) const
Bool_tTObject::TestBit(UInt_t f) const
Int_tTObject::TestBits(UInt_t f) const
virtual voidTGraph::UseCurrentStyle()
virtual voidTObject::Warning(const char* method, const char* msgfmt) const
virtual Int_tTObject::Write(const char* name = 0, Int_t option = 0, Int_t bufsize = 0)
virtual Int_tTObject::Write(const char* name = 0, Int_t option = 0, Int_t bufsize = 0) const
voidTGraph::Zero(Int_t& k, Double_t AZ, Double_t BZ, Double_t E2, Double_t& X, Double_t& Y, Int_t maxiterations)
virtual Double_t**TGraphErrors::Allocate(Int_t size)
Double_t**TGraph::AllocateArrays(Int_t Narrays, Int_t arraySize)
virtual voidTGraphErrors::CopyAndRelease(Double_t** newarrays, Int_t ibegin, Int_t iend, Int_t obegin)
virtual Bool_tTGraphErrors::CopyPoints(Double_t** arrays, Int_t ibegin, Int_t iend, Int_t obegin)
virtual voidTObject::DoError(int level, const char* location, const char* fmt, va_list va) const
Double_t**TGraph::ExpandAndCopy(Int_t size, Int_t iend)
virtual voidTGraphErrors::FillZero(Int_t begin, Int_t end, Bool_t from_ctor = kTRUE)
Double_t**TGraph::ShrinkAndCopy(Int_t size, Int_t iend)
virtual voidTGraphErrors::SwapPoints(Int_t pos1, Int_t pos2)
static voidTGraph::SwapValues(Double_t* arr, Int_t pos1, Int_t pos2)
virtual voidPaint(Option_t* options = "")

Data Members

enum TGraph::[unnamed] { kClipFrame
enum TObject::EStatusBits { kCanDelete
enum TObject::[unnamed] { kIsOnHeap
Double_t*TGraphErrors::fEX[fNpoints] array of X errors
Double_t*TGraphErrors::fEY[fNpoints] array of Y errors
Color_tTAttFill::fFillColorfill area color
Style_tTAttFill::fFillStylefill area style
TList*TGraph::fFunctionsPointer to list of functions (fits and user)
TH1F*TGraph::fHistogramPointer to histogram used for drawing axis
Color_tTAttLine::fLineColorline color
Style_tTAttLine::fLineStyleline style
Width_tTAttLine::fLineWidthline width
Color_tTAttMarker::fMarkerColorMarker color index
Size_tTAttMarker::fMarkerSizeMarker size
Style_tTAttMarker::fMarkerStyleMarker style
Int_tTGraph::fMaxSize!Current dimension of arrays fX and fY
Double_tTGraph::fMaximumMaximum value for plotting along y
Double_tTGraph::fMinimumMinimum value for plotting along y
TStringTNamed::fNameobject identifier
Int_tTGraph::fNpointsNumber of points <= fMaxSize
TGraphPolargram*fPolargramThe polar coord system
TStringTNamed::fTitleobject title
Double_t*TGraph::fX[fNpoints] array of X points
Double_t*fXpol[fNpoints] points in polar coordinates
Double_t*TGraph::fY[fNpoints] array of Y points
Double_t*fYpol[fNpoints] points in polar coordinates
Bool_tfOptionAxisForce drawing of new coord system

Class Charts

Inheritance Inherited Members Includes Libraries
Class Charts

Function documentation

TGraphPolar(const TGraphPolar& )
 TGraphPolar default constructor.
TGraphPolar(Int_t n, const Double_t* x = 0, const Double_t* y = 0, const Double_t* ex = 0, const Double_t* ey = 0)
 TGraphPolar constructor.

 n      : number of points.
 r      : radial values.
 theta  : angular values.
 er     : errors on radial values.
 etheta : errors on angular values.
 TGraphPolar destructor.
Int_t DistancetoPrimitive(Int_t px, Int_t py)
 Return the distance in pixel between the GraphPolar and (px,py).
void Draw(Option_t* options = "")
 Draw TGraphPolar.
void ExecuteEvent(Int_t event, Int_t px, Int_t py)
Indicate that there is something to click here
void Paint(Option_t* options = "")
 Paint TGraphPolar.

 "options" can have the following values:
    - "O" Polar labels are paint orthogonally to the polargram radius.
    - "P" Polymarker are paint at each point position.
    - "E" Paint error bars.
    - "F" Paint fill area (closed polygon).
    - "A" Force axis redrawing even if a polargram already exists.
    - "N" Disable the display of the polar labels.
void PaintTitle()
 Paint the title.
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 SetMinPolar(Double_t minimum = 0)
 Set minimum Polar.
void SetMinRadial(Double_t minimum = 0)
 Set minimum radial in the center of the circle.
TGraphPolar(const TGraphPolar& )
TGraphPolargram * GetPolargram()
{ return fPolargram; }
void SetMaximum(Double_t maximum = 1)
void SetMinimum(Double_t minimum = 0)

Author: Sebastian Boser, 02/02/06
Last update: root/graf:$Id: TGraphPolar.h 21371 2007-12-14 09:17:21Z rdm $
Copyright (C) 1995-2000, Rene Brun and Fons Rademakers. *

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