18x = ROOT.RooRealVar(
"x",
"x", -10, 10)
19mean = ROOT.RooRealVar(
"mean",
"mean of gaussian", 1, -10, 10)
20sigma = ROOT.RooRealVar(
"sigma",
"width of gaussian", 1, 0.1, 10)
23gauss = ROOT.RooGaussian(
"gauss",
"gaussian PDF", x, mean, sigma)
26xframe = x.frame(ROOT.RooFit.Title(
"Gaussian p.d.f."))
37gauss.plotOn(xframe, ROOT.RooFit.LineColor(ROOT.kRed))
42data = gauss.generate(ROOT.RooArgSet(x), 10000)
46xframe2 = x.frame(ROOT.RooFit.Title(
47 "Gaussian p.d.f. with data"))
62c = ROOT.TCanvas(
"rf101_basics",
"rf101_basics", 800, 400)
65ROOT.gPad.SetLeftMargin(0.15)
66xframe.GetYaxis().SetTitleOffset(1.6)
69ROOT.gPad.SetLeftMargin(0.15)
70xframe2.GetYaxis().SetTitleOffset(1.6)
73c.SaveAs(
"rf101_basics.png")