{
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"cell_type": "markdown",
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"source": [
"# piechart\n",
"\n",
"\n",
"\n",
"\n",
"**Author:** Olivier Couet, Guido Volpi \n",
"This notebook tutorial was automatically generated with ROOTBOOK-izer from the macro found in the ROOT repository on Tuesday, May 19, 2026 at 08:37 PM."
]
},
{
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"id": "abf7b252",
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"source": [
"Float_t vals[] = {.2, 1.1, .6, .9, 2.3};\n",
"Int_t colors[] = {2, 3, 4, 5, 6};\n",
"Int_t nvals = sizeof(vals) / sizeof(vals[0]);\n",
"\n",
"TCanvas *cpie = new TCanvas(\"cpie\", \"TPie test\", 700, 700);\n",
"cpie->Divide(2, 2);\n",
"\n",
"TPie *pie1 = new TPie(\"pie1\", \"Pie with offset and no colors\", nvals, vals);\n",
"TPie *pie2 = new TPie(\"pie2\", \"Pie with radial labels\", nvals, vals, colors);\n",
"TPie *pie3 = new TPie(\"pie3\", \"Pie with tangential labels\", nvals, vals, colors);\n",
"TPie *pie4 = new TPie(\"pie4\", \"Pie with verbose labels\", nvals, vals, colors);\n",
"\n",
"cpie->cd(1);\n",
"pie1->SetAngularOffset(30.);\n",
"pie1->SetEntryRadiusOffset(4, 0.1);\n",
"pie1->SetRadius(.35);\n",
"pie1->Draw(\"3d\");\n",
"\n",
"cpie->cd(2);\n",
"pie2->SetEntryRadiusOffset(2, .05);\n",
"pie2->SetEntryLineColor(2, 2);\n",
"pie2->SetEntryLineWidth(2, 5);\n",
"pie2->SetEntryLineStyle(2, 2);\n",
"pie2->SetEntryFillStyle(1, 3030);\n",
"pie2->SetCircle(.5, .45, .3);\n",
"pie2->Draw(\"rsc\");\n",
"\n",
"cpie->cd(3);\n",
"pie3->SetY(.32);\n",
"pie3->GetSlice(0)->SetValue(.8);\n",
"pie3->GetSlice(1)->SetFillStyle(3031);\n",
"pie3->SetLabelsOffset(-.1);\n",
"pie3->Draw(\"3d t nol\");\n",
"TLegend *pieleg = pie3->MakeLegend();\n",
"pieleg->SetY1(.56);\n",
"pieleg->SetY2(.86);\n",
"\n",
"cpie->cd(4);\n",
"pie4->SetRadius(.2);\n",
"pie4->SetLabelsOffset(.01);\n",
"pie4->SetLabelFormat(\"#splitline{%val (%perc)}{%txt}\");\n",
"pie4->Draw(\"nol <\");"
]
},
{
"cell_type": "markdown",
"id": "4e0e4808",
"metadata": {},
"source": [
"Draw all canvases "
]
},
{
"cell_type": "code",
"execution_count": 2,
"id": "bf9c9850",
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"outputs": [
{
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"\n",
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""
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"metadata": {},
"output_type": "display_data"
}
],
"source": [
"gROOT->GetListOfCanvases()->Draw()"
]
}
],
"metadata": {
"kernelspec": {
"display_name": "ROOT C++",
"language": "c++",
"name": "root"
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