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"source": [
"# hist060_TH1_stats\n",
"\n",
"This example shows:\n",
" - how to remove a stat element from the stat box\n",
" - how to add a new one\n",
"\n",
"\n",
"\n",
"\n",
"**Author:** Olivier Couet \n",
"This notebook tutorial was automatically generated with ROOTBOOK-izer from the macro found in the ROOT repository on Tuesday, May 19, 2026 at 08:13 PM."
]
},
{
"cell_type": "markdown",
"id": "86ba6e28",
"metadata": {},
"source": [
"Create and plot a test histogram with stats"
]
},
{
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"execution_count": 1,
"id": "ca6923d3",
"metadata": {
"collapsed": false,
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"shell.execute_reply": "2026-05-19T20:13:10.130847Z"
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"outputs": [
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"data": {
"text/html": [
"\n",
"\n",
"\n",
"
\n",
"\n",
"\n",
"\n"
],
"text/plain": [
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"metadata": {},
"output_type": "display_data"
}
],
"source": [
"TCanvas *se = new TCanvas;\n",
"TH1F *h = new TH1F(\"h\", \"test\", 100, -3, 3);\n",
"h->FillRandom(\"gaus\", 3000);\n",
"gStyle->SetOptStat();\n",
"h->Draw();\n",
"se->Update();"
]
},
{
"cell_type": "markdown",
"id": "02fd82f2",
"metadata": {},
"source": [
"Retrieve the stat box"
]
},
{
"cell_type": "code",
"execution_count": 2,
"id": "071d0620",
"metadata": {
"collapsed": false,
"execution": {
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"shell.execute_reply": "2026-05-19T20:13:10.337527Z"
}
},
"outputs": [],
"source": [
"TPaveStats *ps = (TPaveStats *)se->GetPrimitive(\"stats\");\n",
"ps->SetName(\"mystats\");\n",
"TList *listOfLines = ps->GetListOfLines();"
]
},
{
"cell_type": "markdown",
"id": "a00335b6",
"metadata": {},
"source": [
"Remove the RMS line"
]
},
{
"cell_type": "code",
"execution_count": 3,
"id": "b0aed3b2",
"metadata": {
"collapsed": false,
"execution": {
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"shell.execute_reply": "2026-05-19T20:13:10.544287Z"
}
},
"outputs": [],
"source": [
"TText *tconst = ps->GetLineWith(\"RMS\");\n",
"listOfLines->Remove(tconst);"
]
},
{
"cell_type": "markdown",
"id": "1476327c",
"metadata": {},
"source": [
"Add a new line in the stat box.\n",
"Note that \"=\" is a control character"
]
},
{
"cell_type": "code",
"execution_count": 4,
"id": "0297c65f",
"metadata": {
"collapsed": false,
"execution": {
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"shell.execute_reply": "2026-05-19T20:13:10.750875Z"
}
},
"outputs": [],
"source": [
"TLatex *myt = new TLatex(0, 0, \"Test = 10\");\n",
"myt->SetTextFont(42);\n",
"myt->SetTextSize(0.04);\n",
"myt->SetTextColor(kRed);\n",
"listOfLines->Add(myt);"
]
},
{
"cell_type": "markdown",
"id": "88a3a3ba",
"metadata": {},
"source": [
"the following line is needed to avoid that the automatic redrawing of stats"
]
},
{
"cell_type": "code",
"execution_count": 5,
"id": "9f52032f",
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"shell.execute_reply": "2026-05-19T20:13:10.958621Z"
}
},
"outputs": [],
"source": [
"h->SetStats(0);\n",
"\n",
"se->Modified();"
]
},
{
"cell_type": "markdown",
"id": "4e48e148",
"metadata": {},
"source": [
"Draw all canvases "
]
},
{
"cell_type": "code",
"execution_count": 6,
"id": "2f9cc310",
"metadata": {
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"shell.execute_reply": "2026-05-19T20:13:11.180428Z"
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],
"source": [
"gROOT->GetListOfCanvases()->Draw()"
]
}
],
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