doc/master/piechart_8C.html

void piechart()

{

   Float_t vals[] = {.2, 1.1, .6, .9, 2.3};

   Int_t colors[] = {2, 3, 4, 5, 6};

   Int_t nvals = sizeof(vals) / sizeof(vals[0]);


   TCanvas *cpie = new TCanvas("cpie", "TPie test", 700, 700);

   cpie->Divide(2, 2);


   TPie *pie1 = new TPie("pie1", "Pie with offset and no colors", nvals, vals);

   TPie *pie2 = new TPie("pie2", "Pie with radial labels", nvals, vals, colors);

   TPie *pie3 = new TPie("pie3", "Pie with tangential labels", nvals, vals, colors);

   TPie *pie4 = new TPie("pie4", "Pie with verbose labels", nvals, vals, colors);


   cpie->cd(1);

   pie1->SetAngularOffset(30.);

   pie1->SetEntryRadiusOffset(4, 0.1);

   pie1->SetRadius(.35);

   pie1->Draw("3d");


   cpie->cd(2);

   pie2->SetEntryRadiusOffset(2, .05);

   pie2->SetEntryLineColor(2, 2);

   pie2->SetEntryLineWidth(2, 5);

   pie2->SetEntryLineStyle(2, 2);

   pie2->SetEntryFillStyle(1, 3030);

   pie2->SetCircle(.5, .45, .3);

   pie2->Draw("rsc");


   cpie->cd(3);

   pie3->SetY(.32);

   pie3->GetSlice(0)->SetValue(.8);

   pie3->GetSlice(1)->SetFillStyle(3031);

   pie3->SetLabelsOffset(-.1);

   pie3->Draw("3d t nol");

   TLegend *pieleg = pie3->MakeLegend();

   pieleg->SetY1(.56);

   pieleg->SetY2(.86);


   cpie->cd(4);

   pie4->SetRadius(.2);

   pie4->SetLabelsOffset(.01);

   pie4->SetLabelFormat("#splitline{%val (%perc)}{%txt}");

   pie4->Draw("nol <");

}

Int_t
int Int_t
Definition RtypesCore.h:45

Float_t
float Float_t
Definition RtypesCore.h:57

TRangeDynCast
ROOT::Detail::TRangeCast< T, true > TRangeDynCast
TRangeDynCast is an adapter class that allows the typed iteration through a TCollection.
Definition TCollection.h:358

colors
Color * colors
Definition X3DBuffer.c:21

ROOT::Detail::TRangeCast
Definition TCollection.h:311

TCanvas
The Canvas class.
Definition TCanvas.h:23

TLegend
This class displays a legend box (TPaveText) containing several legend entries.
Definition TLegend.h:23

TPie
Draw a Pie Chart,.
Definition TPie.h:23