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rf407_latextables.C
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1 /// \file
2 /// \ingroup tutorial_roofit
3 /// \notebook -nodraw
4 /// Data and categories: latex printing of lists and sets of RooArgSets
5 ///
6 /// \macro_output
7 /// \macro_code
8 ///
9 /// \date July 2008
10 /// \author Wouter Verkerke
11 
12 #include "RooRealVar.h"
13 #include "RooDataSet.h"
14 #include "RooGaussian.h"
15 #include "RooConstVar.h"
16 #include "RooChebychev.h"
17 #include "RooAddPdf.h"
18 #include "RooExponential.h"
19 #include "TCanvas.h"
20 #include "TAxis.h"
21 #include "RooPlot.h"
22 using namespace RooFit;
23 
24 void rf407_latextables()
25 {
26  // S e t u p c o m p o s i t e p d f
27  // --------------------------------------
28 
29  // Declare observable x
30  RooRealVar x("x", "x", 0, 10);
31 
32  // Create two Gaussian PDFs g1(x,mean1,sigma) anf g2(x,mean2,sigma) and their parameters
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);
38 
39  // Sum the signal components into a composite signal pdf
40  RooRealVar sig1frac("sig1frac", "fraction of component 1 in signal", 0.8, 0., 1.);
41  RooAddPdf sig("sig", "Signal", RooArgList(sig1, sig2), sig1frac);
42 
43  // Build Chebychev polynomial pdf
44  RooRealVar a0("a0", "a0", 0.5, 0., 1.);
45  RooRealVar a1("a1", "a1", 0.2, 0., 1.);
46  RooChebychev bkg1("bkg1", "Background 1", x, RooArgSet(a0, a1));
47 
48  // Build expontential pdf
49  RooRealVar alpha("alpha", "alpha", -1);
50  RooExponential bkg2("bkg2", "Background 2", x, alpha);
51 
52  // Sum the background components into a composite background pdf
53  RooRealVar bkg1frac("sig1frac", "fraction of component 1 in background", 0.2, 0., 1.);
54  RooAddPdf bkg("bkg", "Signal", RooArgList(bkg1, bkg2), sig1frac);
55 
56  // Sum the composite signal and background
57  RooRealVar bkgfrac("bkgfrac", "fraction of background", 0.5, 0., 1.);
58  RooAddPdf model("model", "g1+g2+a", RooArgList(bkg, sig), bkgfrac);
59 
60  // 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
61  // ----------------------------------------------------------------------------------------
62 
63  // Make list of model parameters
64  RooArgSet *params = model.getParameters(x);
65 
66  // Save snapshot of prefit parameters
67  RooArgSet *initParams = (RooArgSet *)params->snapshot();
68 
69  // Do fit to data, to obtain error estimates on parameters
70  RooDataSet *data = model.generate(x, 1000);
71  model.fitTo(*data);
72 
73  // 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
74  // --------------------------------------------------------------------------
75 
76  // Print parameter list in LaTeX for (one column with names, one column with values)
77  params->printLatex();
78 
79  // Print parameter list in LaTeX for (names values|names values)
80  params->printLatex(Columns(2));
81 
82  // Print two parameter lists side by side (name values initvalues)
83  params->printLatex(Sibling(*initParams));
84 
85  // Print two parameter lists side by side (name values initvalues|name values initvalues)
86  params->printLatex(Sibling(*initParams), Columns(2));
87 
88  // Write LaTex table to file
89  params->printLatex(Sibling(*initParams), OutputFile("rf407_latextables.tex"));
90 }
RooChebychev.h
RooFit::Columns
RooCmdArg Columns(Int_t ncol)
Definition: RooGlobalFunc.cxx:164
RooAddPdf
RooAddPdf is an efficient implementation of a sum of PDFs of the form.
Definition: RooAddPdf.h:32
RooFit::Sibling
RooCmdArg Sibling(const RooAbsCollection &sibling)
Definition: RooGlobalFunc.cxx:166
RooFit::OutputFile
RooCmdArg OutputFile(const char *fileName)
Definition: RooGlobalFunc.cxx:165
RooChebychev
Chebychev polynomial p.d.f.
Definition: RooChebychev.h:25
RooArgList
RooArgList is a container object that can hold multiple RooAbsArg objects.
Definition: RooArgList.h:21
RooGaussian.h
x
Double_t x[n]
Definition: legend1.C:17
RooGaussian
Plain Gaussian p.d.f.
Definition: RooGaussian.h:24
RooAddPdf.h
TCanvas.h
RooDataSet.h
rf407_latextables
Definition: rf407_latextables.py:1
RooArgSet::snapshot
RooArgSet * snapshot(bool deepCopy=true) const
Use RooAbsCollection::snapshot(), but return as RooArgSet.
Definition: RooArgSet.h:126
RooFit
The namespace RooFit contains mostly switches that change the behaviour of functions of PDFs (or othe...
Definition: RooCFunction1Binding.h:29
RooPlot.h
RooAbsCollection::printLatex
void printLatex(const RooCmdArg &arg1=RooCmdArg(), const RooCmdArg &arg2=RooCmdArg(), const RooCmdArg &arg3=RooCmdArg(), const RooCmdArg &arg4=RooCmdArg(), const RooCmdArg &arg5=RooCmdArg(), const RooCmdArg &arg6=RooCmdArg(), const RooCmdArg &arg7=RooCmdArg(), const RooCmdArg &arg8=RooCmdArg()) const
Output content of collection as LaTex table.
Definition: RooAbsCollection.cxx:1026
RooRealVar.h
RooExponential.h
RooConstVar.h
TAxis.h
RooDataSet
RooDataSet is a container class to hold unbinned data.
Definition: RooDataSet.h:33
make_cnn_model.model
model
Definition: make_cnn_model.py:6
RooRealVar
RooRealVar represents a variable that can be changed from the outside.
Definition: RooRealVar.h:37
RooExponential
Exponential PDF.
Definition: RooExponential.h:25
RooArgSet
RooArgSet is a container object that can hold multiple RooAbsArg objects.
Definition: RooArgSet.h:29