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"# Legendre\n",
"Example of first few Legendre Polynomials. Inspired by work of Lorenzo Moneta.\n",
"\n",
"\n",
"\n",
"\n",
"**Author:** Alberto Ferro, Massimiliano Galli \n",
"This notebook tutorial was automatically generated with ROOTBOOK-izer from the macro found in the ROOT repository on Tuesday, May 19, 2026 at 08:25 PM."
]
},
{
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"id": "33ef2ebf",
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"execution": {
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"source": [
"import ROOT\n",
"\n",
"ROOT.gSystem.Load(\"libMathMore\")\n",
"Canvas = ROOT.TCanvas(\"DistCanvas\", \"Legendre polynomials example\", 10, 10, 750, 600)\n",
"Canvas.SetGrid()\n",
"leg = ROOT.TLegend(0.5, 0.7, 0.4, 0.89)\n",
"\n",
"L = []\n",
"for nu in range(5):\n",
" f = ROOT.TF1(\"L_0\", \"ROOT::Math::legendre([0],x)\", -1, 1)\n",
" f.SetParameters(nu, 0.0)\n",
" f.SetLineStyle(ROOT.kSolid)\n",
" f.SetLineWidth(2)\n",
" f.SetLineColor(nu+1)\n",
" L.append(f)\n",
"\n",
"L[0].SetMaximum(1)\n",
"L[0].SetMinimum(-1)\n",
"L[0].SetTitle(\"Legendre polynomials\")\n",
"\n",
"for idx, val in enumerate(L):\n",
" leg.AddEntry(val, \" L_{}(x)\".format(idx), \"l\")\n",
" if idx == 0:\n",
" val.Draw()\n",
" else:\n",
" val.Draw(\"same\")\n",
"\n",
"leg.Draw(\"same\")"
]
},
{
"cell_type": "markdown",
"id": "a9ae790d",
"metadata": {},
"source": [
"Draw all canvases "
]
},
{
"cell_type": "code",
"execution_count": 2,
"id": "1c15283d",
"metadata": {
"collapsed": false,
"execution": {
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},
"metadata": {},
"output_type": "display_data"
}
],
"source": [
"from ROOT import gROOT \n",
"gROOT.GetListOfCanvases().Draw()"
]
}
],
"metadata": {
"kernelspec": {
"display_name": "Python 3",
"language": "python",
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