rf512_wsfactory_oper.C File Reference

Detailed Description

Organization and simultaneous fits: operator expressions and expression-based basic p.d.f.s in the workspace factory syntax

 
 
␛[1mRooFit v3.60 -- Developed by Wouter Verkerke and David Kirkby␛[0m 
                Copyright (C) 2000-2013 NIKHEF, University of California & Stanford University
                All rights reserved, please read http://roofit.sourceforge.net/license.txt
 
[#1] INFO:Caching -- Changing internal binning of variable 'x' in FFT 'lxg' from 100 to 930 to improve the precision of the numerical FFT. This can be done manually by setting an additional binning named 'cache'.
[#1] INFO:ObjectHandling -- RooWorkspace::autoImportClass(w) importing code of class RooCFAuto000Pdf from /home/sftnight/build/workspace/root-makedoc-v618/rootspi/rdoc/src/v6-18-00-patches/documentation/doxygen/RooCFAuto000Pdf.cxx and RooCFAuto000Pdf.h
 
RooWorkspace(w) w contents
 
variables
---------
(Nbkg,Nsig,a,c,f,m,mg,s,u,v,x,y,z)
 
p.d.f.s
-------
RooGenericPdf::G[ actualVars=(x) formula="x*x+1" ] = 1
RooCFAuto000Pdf::GC[ x=x a=a ] = 1
RooChebychev::ch[ x=x coefList=(0.1,0.2,-0.3) ] = 0.8
RooAddPdf::extsummodel[ Nsig * gx + Nbkg * ch ] = 0.9
RooGaussian::g[ x=x mean=mg sigma=1 ] = 1
RooGaussian::gs[ x=x mean=m sigma=s ] = 1
RooGaussian::gx[ x=x mean=m sigma=1 ] = 1
RooProdPdf::gxycond[ gx * gy|x ] = 1
RooProdPdf::gxz[ gx * gz ] = 1
RooGaussian::gy[ x=y mean=x sigma=1 ] = 1
RooGaussian::gz[ x=z mean=0 sigma=1 ] = 1
RooLandau::lc[ x=x mean=0 sigma=1 ] = 0.178854
RooLandau::ls[ x=x mean=0 sigma=1 ] = 0.178854
RooFFTConvPdf::lxg[ g(x) (*) lc(x) ] = 0.171832
RooSimultaneous::smodel[ indexCat=c A=gs B=ls ] = 1
RooAddPdf::summodel[ f * gx + [%] * ch ] = 0.9
 
functions
--------
RooProduct::uv[ u * v ] = 100
RooAddition::uv2[ u + v ] = 20
 
embedded class code
-------------------
RooCFAuto000Pdf
 
embedded precalculated expensive components
-------------------------------------------
uid = 0 key=lxg_g_CONV_lc_CACHEHIST_Obs[x]_BufFrac0.1_BufStrat0 value=RooDataHist::lxg_g_CONV_lc_CACHEHIST_Obs[x]_BufFrac0.1_BufStrat0 parameters=( mg=0 )

 
#include "RooRealVar.h"
#include "RooDataSet.h"
#include "RooGaussian.h"
#include "RooConstVar.h"
#include "RooChebychev.h"
#include "RooAddPdf.h"
#include "RooWorkspace.h"
#include "RooPlot.h"
#include "TCanvas.h"
#include "TAxis.h"
using namespace RooFit;
 
void rf512_wsfactory_oper()
{
   RooWorkspace *w = new RooWorkspace("w");
 
   // You can define typedefs for even shorter construction semantics
   w->factory("$Typedef(Gaussian,Gaus)");
   w->factory("$Typedef(Chebychev,Cheby)");
 
   // O p e r a t o r   p . d . f .   e x a m p l e s
   // ------------------------------------------------
 
   // PDF addition is done with SUM (coef1*pdf1,pdf2)
   w->factory("SUM::summodel( f[0,1]*Gaussian::gx(x[-10,10],m[0],1.0), Chebychev::ch(x,{0.1,0.2,-0.3}) )");
 
   // Extended PDF addition is done with SUM (yield1*pdf1,yield2*pdf2)
   w->factory("SUM::extsummodel( Nsig[0,1000]*gx, Nbkg[0,1000]*ch )");
 
   // PDF multiplication is done with PROD ( pdf1, pdf2 )
   w->factory("PROD::gxz( gx, Gaussian::gz(z[-10,10],0,1) )");
 
   // Conditional p.d.f multiplication is done with PROD ( pdf1|obs, pdf2 )
   w->factory("Gaussian::gy( y[-10,10], x, 1.0 )");
   w->factory("PROD::gxycond( gy|x, gx )");
 
   // Convolution (numeric/ fft) is done with NCONV/FCONV (obs,pdf1,pdf2)
   w->factory("FCONV::lxg( x, Gaussian::g(x,mg[0],1), Landau::lc(x,0,1) )");
 
   // Simultaneous p.d.f.s are constructed with SIMUL( index, state1=pdf1, state2=pdf2,...)
   w->factory("SIMUL::smodel( c[A=0,B=1], A=Gaussian::gs(x,m,s[1]), B=Landau::ls(x,0,1) )");
 
   // O p e r a t o r   f u n c t i o n   e x a m p l e s
   // ---------------------------------------------------
 
   // Function multiplication is done with prod (func1, func2,...)
   w->factory("prod::uv(u[10],v[10])");
 
   // Function addition is done with sum(func1,func2)
   w->factory("sum::uv2(u,v)");
 
   // I n t e r p r e t e d   a n d   c o m p i l e d   e x p r e s s i o n   b a s e d   p . d . f . s .
   // ---------------------------------------------------------------------------------------------------
 
   // Create a RooGenericPdf interpreted p.d.f. You can use single quotes to pass the expression string argument
   w->factory("EXPR::G('x*x+1',x)");
 
   // Create a custom compiled p.d.f similar to the above interpreted p.d.f.
   // The code required to make this p.d.f. is automatically embedded in the workspace
   w->factory("CEXPR::GC('x*x+a',{x,a[1]})");
 
   // Compiled and interpreted functions (rather than p.d.f.s) can be made with the lower case
   // 'expr' and 'cexpr' types
 
   // Print workspace contents
   w->Print();
 
   // Make workspace visible on command line
   gDirectory->Add(w);
}

Author

04/2009 - Wouter Verkerke

Definition in file rf512_wsfactory_oper.C.