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rf407_latextables.C File Reference

## Detailed Description

Data and categories: latex printing of lists and sets of RooArgSets

#include "RooRealVar.h"
#include "RooDataSet.h"
#include "RooGaussian.h"
#include "RooChebychev.h"
#include "RooExponential.h"
#include "TCanvas.h"
#include "TAxis.h"
#include "RooPlot.h"
using namespace RooFit;
{
// S e t u p c o m p o s i t e p d f
// --------------------------------------
// Declare observable x
RooRealVar x("x", "x", 0, 10);
// Create two Gaussian PDFs g1(x,mean1,sigma) anf g2(x,mean2,sigma) and their parameters
RooRealVar mean("mean", "mean of gaussians", 5);
RooRealVar sigma1("sigma1", "width of gaussians", 0.5);
RooRealVar sigma2("sigma2", "width of gaussians", 1);
RooGaussian sig1("sig1", "Signal component 1", x, mean, sigma1);
RooGaussian sig2("sig2", "Signal component 2", x, mean, sigma2);
// Sum the signal components into a composite signal pdf
RooRealVar sig1frac("sig1frac", "fraction of component 1 in signal", 0.8, 0., 1.);
RooAddPdf sig("sig", "Signal", RooArgList(sig1, sig2), sig1frac);
// Build Chebychev polynomial pdf
RooRealVar a0("a0", "a0", 0.5, 0., 1.);
RooRealVar a1("a1", "a1", 0.2, 0., 1.);
RooChebychev bkg1("bkg1", "Background 1", x, RooArgSet(a0, a1));
// Build expontential pdf
RooRealVar alpha("alpha", "alpha", -1);
RooExponential bkg2("bkg2", "Background 2", x, alpha);
// Sum the background components into a composite background pdf
RooRealVar bkg1frac("sig1frac", "fraction of component 1 in background", 0.2, 0., 1.);
RooAddPdf bkg("bkg", "Signal", RooArgList(bkg1, bkg2), sig1frac);
// Sum the composite signal and background
RooRealVar bkgfrac("bkgfrac", "fraction of background", 0.5, 0., 1.);
RooAddPdf model("model", "g1+g2+a", RooArgList(bkg, sig), bkgfrac);
// M a k e l i s t o f p a r a m e t e r s b e f o r e a n d a f t e r f i t
// ----------------------------------------------------------------------------------------
// Make list of model parameters
std::unique_ptr<RooArgSet> params{model.getParameters(x)};
// Save snapshot of prefit parameters
std::unique_ptr<RooArgSet> initParams{static_cast<RooArgSet *>(params->snapshot())};
// Do fit to data, to obtain error estimates on parameters
std::unique_ptr<RooDataSet> data{model.generate(x, 1000)};
model.fitTo(*data, PrintLevel(-1));
// P r i n t l a t ex t a b l e o f p a r a m e t e r s o f p d f
// --------------------------------------------------------------------------
// Print parameter list in LaTeX for (one column with names, one column with values)
params->printLatex();
// Print parameter list in LaTeX for (names values|names values)
params->printLatex(Columns(2));
// Print two parameter lists side by side (name values initvalues)
params->printLatex(Sibling(*initParams));
// Print two parameter lists side by side (name values initvalues|name values initvalues)
params->printLatex(Sibling(*initParams), Columns(2));
// Write LaTex table to file
params->printLatex(Sibling(*initParams), OutputFile("rf407_latextables.tex"));
}
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.
RooArgList is a container object that can hold multiple RooAbsArg objects.
Definition RooArgList.h:22
RooArgSet is a container object that can hold multiple RooAbsArg objects.
Definition RooArgSet.h:55
Chebychev polynomial p.d.f.
Exponential PDF.
Plain Gaussian p.d.f.
Definition RooGaussian.h:24
Variable that can be changed from the outside.
Definition RooRealVar.h:37
RooCmdArg Columns(Int_t ncol)
RooCmdArg Sibling(const RooAbsCollection &sibling)
RooCmdArg OutputFile(const char *fileName)
RooCmdArg PrintLevel(Int_t code)
Double_t x[n]
Definition legend1.C:17
The namespace RooFit contains mostly switches that change the behaviour of functions of PDFs (or othe...
Definition JSONIO.h:26
[#0] WARNING:InputArguments -- The parameter 'sigma1' with range [-inf, inf] of the RooGaussian 'sig1' exceeds the safe range of (0, inf). Advise to limit its range.
[#0] WARNING:InputArguments -- The parameter 'sigma2' with range [-inf, inf] of the RooGaussian 'sig2' exceeds the safe range of (0, inf). Advise to limit its range.
[#1] INFO:Fitting -- RooAbsPdf::fitTo(model) fixing normalization set for coefficient determination to observables in data
[#1] INFO:Fitting -- using CPU computation library compiled with -mavx2
[#1] INFO:Fitting -- RooAddition::defaultErrorLevel(nll_model_modelData) Summation contains a RooNLLVar, using its error level
[#1] INFO:Minimization -- RooAbsMinimizerFcn::setOptimizeConst: activating const optimization
[#1] INFO:Minimization -- RooAbsMinimizerFcn::setOptimizeConst: deactivating const optimization
\begin{tabular}{lc}
$\verb+a0+$ & $0.6\pm 0.2$\\
$\verb+a1+$ & $0.2\pm 0.2$\\
$\verb+alpha+$ & $-1.00$\\
$\verb+bkgfrac+$ & $0.45\pm 0.03$\\
$\verb+mean+$ & $5$\\
$\verb+sig1frac+$ & $0.71\pm 0.06$\\
$\verb+sigma1+$ & $0.5$\\
$\verb+sigma2+$ & $1$\\
\end{tabular}
\begin{tabular}{lc|lc}
$\verb+a0+$ & $0.6\pm 0.2$ & $\verb+mean+$ & $5$\\
$\verb+a1+$ & $0.2\pm 0.2$ & $\verb+sig1frac+$ & $0.71\pm 0.06$\\
$\verb+alpha+$ & $-1.00$ & $\verb+sigma1+$ & $0.5$\\
$\verb+bkgfrac+$ & $0.45\pm 0.03$ & $\verb+sigma2+$ & $1$\\
\end{tabular}
\begin{tabular}{lcc}
$\verb+a0+$ & $0.6\pm 0.2$ & $0.5$\\
$\verb+a1+$ & $0.2\pm 0.2$ & $0.2$\\
$\verb+alpha+$ & $-1.00$ & $-1.00$\\
$\verb+bkgfrac+$ & $0.45\pm 0.03$ & $0.5$\\
$\verb+mean+$ & $5$ & $5$\\
$\verb+sig1frac+$ & $0.71\pm 0.06$ & $0.8$\\
$\verb+sigma1+$ & $0.5$ & $0.5$\\
$\verb+sigma2+$ & $1$ & $1$\\
\end{tabular}
\begin{tabular}{lcc|lcc}
$\verb+a0+$ & $0.6\pm 0.2$ & $0.5$ & $\verb+mean+$ & $5$ & $5$\\
$\verb+a1+$ & $0.2\pm 0.2$ & $0.2$ & $\verb+sig1frac+$ & $0.71\pm 0.06$ & $0.8$\\
$\verb+alpha+$ & $-1.00$ & $-1.00$ & $\verb+sigma1+$ & $0.5$ & $0.5$\\
$\verb+bkgfrac+$ & $0.45\pm 0.03$ & $0.5$ & $\verb+sigma2+$ & $1$ & $1$\\
\end{tabular}
Date
July 2008

Definition in file rf407_latextables.C.