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graphpolar2.C
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1/// \file
2/// \ingroup tutorial_graphs
3/// \notebook
4/// Create and draw a polar graph with PI axis
5///
6/// \macro_image
7/// \macro_code
8///
9/// \author Olivier Couet
10
11void graphpolar2()
12{
13 TCanvas * CPol = new TCanvas("CPol","TGraphPolar Example",500,500);
14
15 Double_t theta[8];
16 Double_t radius[8];
17 Double_t etheta[8];
18 Double_t eradius[8];
19
20 for (int i=0; i<8; i++) {
21 theta[i] = (i+1)*(TMath::Pi()/4.);
22 radius[i] = (i+1)*0.05;
23 etheta[i] = TMath::Pi()/8.;
24 eradius[i] = 0.05;
25 }
26
27 TGraphPolar * grP1 = new TGraphPolar(8, theta, radius, etheta, eradius);
28 grP1->SetTitle("");
29
30 grP1->SetMarkerStyle(20);
31 grP1->SetMarkerSize(2.);
32 grP1->SetMarkerColor(4);
33 grP1->SetLineColor(2);
34 grP1->SetLineWidth(3);
35 grP1->Draw("PE");
36
37 CPol->Update();
38
39 if (grP1->GetPolargram())
40 grP1->GetPolargram()->SetToRadian();
41}
double Double_t
Definition: RtypesCore.h:59
virtual void SetLineWidth(Width_t lwidth)
Set the line width.
Definition: TAttLine.h:43
virtual void SetLineColor(Color_t lcolor)
Set the line color.
Definition: TAttLine.h:40
virtual void SetMarkerColor(Color_t mcolor=1)
Set the marker color.
Definition: TAttMarker.h:38
virtual void SetMarkerStyle(Style_t mstyle=1)
Set the marker style.
Definition: TAttMarker.h:40
virtual void SetMarkerSize(Size_t msize=1)
Set the marker size.
Definition: TAttMarker.h:45
The Canvas class.
Definition: TCanvas.h:23
void Update() override
Update canvas pad buffers.
Definition: TCanvas.cxx:2478
To draw a polar graph.
Definition: TGraphPolar.h:23
TGraphPolargram * GetPolargram()
Definition: TGraphPolar.h:39
void Draw(Option_t *options="") override
Draw TGraphPolar.
void SetToRadian()
The Polar circle is labelled using radian.
void SetTitle(const char *title="") override
Change (i.e.
Definition: TGraph.cxx:2338
constexpr Double_t Pi()
Definition: TMath.h:37