doc/v606/rf407__latextables_8C.html

#ifndef __CINT__

#include "RooGlobalFunc.h"

#endif

#include "RooRealVar.h"

#include "RooDataSet.h"

#include "RooGaussian.h"

#include "RooConstVar.h"

#include "RooChebychev.h"

#include "RooAddPdf.h"

#include "RooExponential.h"

#include "TCanvas.h"

#include "TAxis.h"

#include "RooPlot.h"

using namespace RooFit ;


void rf407_latextables()

{

  // 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 p.d.f.

  RooRealVar sig1frac("sig1frac","fraction of component 1 in signal",0.8,0.,1.) ;

  RooAddPdf sig("sig","Signal",RooArgList(sig1,sig2),sig1frac) ;


  // Build Chebychev polynomial p.d.f.

  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 p.d.f.

  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

  RooArgSet* params = model.getParameters(x) ;


  // Save snapshot of prefit parameters

  RooArgSet* initParams = (RooArgSet*) params->snapshot() ;


  // Do fit to data, to obtain error estimates on parameters

  RooDataSet* data = model.generate(x,1000) ;

  model.fitTo(*data) ;


  // 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")) ;


}