33 RooRealVar mean(
"mean",
"mean of gaussians", 5);
34 RooRealVar sigma1(
"sigma1",
"width of gaussians", 0.5);
35 RooRealVar sigma2(
"sigma2",
"width of gaussians", 1);
36 RooGaussian sig1(
"sig1",
"Signal component 1",
x, mean, sigma1);
37 RooGaussian sig2(
"sig2",
"Signal component 2",
x, mean, sigma2);
40 RooRealVar sig1frac(
"sig1frac",
"fraction of component 1 in signal", 0.8, 0., 1.);
41 RooAddPdf sig(
"sig",
"Signal", {sig1, sig2}, sig1frac);
53 RooRealVar bkg1frac(
"bkg1frac",
"fraction of component 1 in background", 0.8, 0., 1.);
54 RooAddPdf bkg(
"bkg",
"Total background", {bkg1, bkg2}, bkg1frac);
57 RooRealVar bkgfrac(
"bkgfrac",
"fraction of background", 0.5, 0., 1.);
58 RooAddPdf model(
"model",
"g1+g2+a", {bkg, sig}, bkgfrac);
64 std::unique_ptr<RooDataSet>
data{model.generate(
x, 1000)};
104 TCanvas *
c =
new TCanvas(
"rf205_compplot",
"rf205_compplot", 800, 400);
107 gPad->SetLeftMargin(0.15);
111 gPad->SetLeftMargin(0.15);
Option_t Option_t TPoint TPoint const char GetTextMagnitude GetFillStyle GetLineColor GetLineWidth GetMarkerStyle GetTextAlign GetTextColor GetTextSize void data
Efficient implementation of a sum of PDFs of the form.
Chebychev polynomial p.d.f.
Plot frame and a container for graphics objects within that frame.
static RooPlot * frame(const RooAbsRealLValue &var, double xmin, double xmax, Int_t nBins)
Create a new frame for a given variable in x.
void Draw(Option_t *options=nullptr) override
Draw this plot and all of the elements it contains.
Variable that can be changed from the outside.
virtual void SetTitleOffset(Float_t offset=1)
Set distance between the axis and the axis title.
TObject * Clone(const char *newname="") const override
Make a clone of an object using the Streamer facility.
RooCmdArg Components(Args_t &&... argsOrArgSet)
RooCmdArg Invisible(bool inv=true)
RooCmdArg LineColor(Color_t color)
RooCmdArg LineStyle(Style_t style)
The namespace RooFit contains mostly switches that change the behaviour of functions of PDFs (or othe...