Multidimensional models: simple uncorrelated multi-dimensional pdfs
pdf = gauss(x,mx,sx) * gauss(y,my,sy)
{
RooRealVar meanx(
"mean1",
"mean of gaussian x", 2);
RooRealVar meany(
"mean2",
"mean of gaussian y", -2);
RooRealVar sigmax(
"sigmax",
"width of gaussian x", 1);
RooRealVar sigmay(
"sigmay",
"width of gaussian y", 5);
RooGaussian gaussx(
"gaussx",
"gaussian PDF",
x, meanx, sigmax);
RooGaussian gaussy(
"gaussy",
"gaussian PDF",
y, meany, sigmay);
std::unique_ptr<RooDataSet>
data{gaussxy.generate({
x,
y}, 10000)};
gaussxy.plotOn(xframe);
gaussxy.plotOn(yframe);
TCanvas *
c =
new TCanvas(
"rf304_uncorrprod",
"rf304_uncorrprod", 800, 400);
gPad->SetLeftMargin(0.15);
gPad->SetLeftMargin(0.15);
}
Option_t Option_t TPoint TPoint const char GetTextMagnitude GetFillStyle GetLineColor GetLineWidth GetMarkerStyle GetTextAlign GetTextColor GetTextSize void data
RooArgList is a container object that can hold multiple RooAbsArg objects.
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.
Efficient implementation of a product of PDFs of the form.
Variable that can be changed from the outside.
virtual void SetTitleOffset(Float_t offset=1)
Set distance between the axis and the axis title.
The namespace RooFit contains mostly switches that change the behaviour of functions of PDFs (or othe...
[#0] WARNING:InputArguments -- The parameter 'sigmax' with range [-inf, inf] of the RooGaussian 'gaussx' exceeds the safe range of (0, inf). Advise to limit its range.
[#0] WARNING:InputArguments -- The parameter 'sigmay' with range [-inf, inf] of the RooGaussian 'gaussy' exceeds the safe range of (0, inf). Advise to limit its range.
[#1] INFO:Plotting -- RooAbsReal::plotOn(gaussxy) plot on x integrates over variables (y)
[#1] INFO:Plotting -- RooAbsReal::plotOn(gaussxy) plot on y integrates over variables (x)
- Date
- July 2008
- Author
- Wouter Verkerke
Definition in file rf304_uncorrprod.C.