ROOT
v6-22
Reference Guide
Legendre.py
Go to the documentation of this file.
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## \file
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## \ingroup tutorial_math
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## \notebook
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## Example of first few Legendre Polynomials. Inspired by work of Lorenzo Moneta.
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##
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## \macro_image
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## \macro_code
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##
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## \author Alberto Ferro, Massimiliano Galli
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import
ROOT
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ROOT.gSystem.Load(
"libMathMore"
)
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Canvas = ROOT.TCanvas(
"DistCanvas"
,
"Legendre polynomials example"
, 10, 10, 750, 600)
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Canvas.SetGrid()
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leg = ROOT.TLegend(0.5, 0.7, 0.4, 0.89)
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L = []
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for
nu
in
range(5):
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f = ROOT.TF1(
"L_0"
,
"ROOT::Math::legendre([0],x)"
, -1, 1)
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f.SetParameters(nu, 0.0)
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f.SetLineStyle(1)
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f.SetLineWidth(2)
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f.SetLineColor(nu+1)
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L.append(f)
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L[0].SetMaximum(1)
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L[0].SetMinimum(-1)
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L[0].SetTitle(
"Legendre polynomials"
)
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for
idx, val
in
enumerate(L):
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leg.AddEntry(val,
" L_{}(x)"
.format(idx),
"l"
)
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if
idx == 0:
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val.Draw()
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else
:
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val.Draw(
"same"
)
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leg.Draw(
"same"
)
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tutorials
math
Legendre.py
ROOT v6-22 - Reference Guide Generated on Fri Apr 1 2022 11:53:29 (GVA Time) using Doxygen 1.9.4