High Level Factory: creating a complex combined model.
Author: Danilo Piparo
This notebook tutorial was automatically generated with ROOTBOOK-izer from the macro found in the ROOT repository on Wednesday, April 17, 2024 at 11:20 AM.
%%cpp -d
#include <fstream>
#include "TString.h"
#include "TFile.h"
#include "TROOT.h"
#include "RooGlobalFunc.h"
#include "RooWorkspace.h"
#include "RooRealVar.h"
#include "RooAbsPdf.h"
#include "RooDataSet.h"
#include "RooPlot.h"
#include "RooStats/HLFactory.h"
using namespace RooFit;
using namespace RooStats;
using std::ofstream, std::cout;
--- Prepare the 2 needed datacards for this example ---
TString card_name("rs603_card_WsMaker.rs");
ofstream ofile(card_name);
ofile << "// The simplest card for combination\n\n";
ofile << "gauss1 = Gaussian(x[0,100],mean1[50,0,100],4);\n";
ofile << "flat1 = Polynomial(x,0);\n";
ofile << "sb_model1 = SUM(nsig1[120,0,300]*gauss1 , nbkg1[100,0,1000]*flat1);\n\n";
ofile << "echo In the middle!;\n\n";
ofile << "gauss2 = Gaussian(x,mean2[80,0,100],5);\n";
ofile << "flat2 = Polynomial(x,0);\n";
ofile << "sb_model2 = SUM(nsig2[90,0,400]*gauss2 , nbkg2[80,0,1000]*flat2);\n\n";
ofile << "echo At the end!;\n";
ofile.close();
TString card_name2("rs603_card.rs");
ofstream ofile2(card_name2);
ofile2 << "// The simplest card for combination\n\n";
ofile2 << "gauss1 = Gaussian(x[0,100],mean1[50,0,100],4);\n";
ofile2 << "flat1 = Polynomial(x,0);\n";
ofile2 << "sb_model1 = SUM(nsig1[120,0,300]*gauss1 , nbkg1[100,0,1000]*flat1);\n\n";
ofile2 << "echo In the middle!;\n\n";
ofile2 << "gauss2 = Gaussian(x,mean2[80,0,100],5);\n";
ofile2 << "flat2 = Polynomial(x,0);\n";
ofile2 << "sb_model2 = SUM(nsig2[90,0,400]*gauss2 , nbkg2[80,0,1000]*flat2);\n\n";
ofile2 << "#include rs603_included_card.rs;\n\n";
ofile2 << "echo At the end!;\n";
ofile2.close();
TString card_name3("rs603_included_card.rs");
ofstream ofile3(card_name3);
ofile3 << "echo Now reading the included file!;\n\n";
ofile3 << "echo Including datasets in a Workspace in a Root file...;\n";
ofile3 << "data1 = import(rs603_infile.root,\n";
ofile3 << " rs603_ws,\n";
ofile3 << " data1);\n\n";
ofile3 << "data2 = import(rs603_infile.root,\n";
ofile3 << " rs603_ws,\n";
ofile3 << " data2);\n";
ofile3.close();
--- Produce the two separate datasets into a WorkSpace ---
HLFactory hlf("HLFactoryComplexExample", "rs603_card_WsMaker.rs", false);
auto x = static_cast<RooRealVar *>(hlf.GetWs()->arg("x"));
auto pdf1 = hlf.GetWs()->pdf("sb_model1");
auto pdf2 = hlf.GetWs()->pdf("sb_model2");
RooWorkspace w("rs603_ws");
auto data1 = pdf1->generate(RooArgSet(*x), Extended());
data1->SetName("data1");
w.import(*data1);
auto data2 = pdf2->generate(RooArgSet(*x), Extended());
data2->SetName("data2");
w.import(*data2);
[HLFactoryComplexExample] echo: In the middle! [HLFactoryComplexExample] echo: At the end! [#1] INFO:ObjectHandling -- RooWorkspace::import(rs603_ws) importing dataset data1 [#1] INFO:ObjectHandling -- RooWorkspace::import(rs603_ws) importing RooRealVar::x [#1] INFO:ObjectHandling -- RooWorkspace::import(rs603_ws) importing dataset data2
--- Write the WorkSpace into a rootfile ---
TFile outfile("rs603_infile.root", "RECREATE");
w.Write();
outfile.Close();
cout << "-------------------------------------------------------------------\n"
<< " Rootfile and Workspace prepared \n"
<< "-------------------------------------------------------------------\n";
HLFactory hlf_2("HLFactoryElaborateExample", "rs603_card.rs", false);
x = hlf_2.GetWs()->var("x");
pdf1 = hlf_2.GetWs()->pdf("sb_model1");
pdf2 = hlf_2.GetWs()->pdf("sb_model2");
hlf_2.AddChannel("model1", "sb_model1", "flat1", "data1");
hlf_2.AddChannel("model2", "sb_model2", "flat2", "data2");
auto data = hlf_2.GetTotDataSet();
auto pdf = hlf_2.GetTotSigBkgPdf();
auto thecat = hlf_2.GetTotCategory();
------------------------------------------------------------------- Rootfile and Workspace prepared ------------------------------------------------------------------- [HLFactoryElaborateExample] echo: In the middle! [HLFactoryElaborateExample] echo: Now reading the included file! [HLFactoryElaborateExample] echo: Including datasets in a Workspace in a Root file... [#1] INFO:ObjectHandling -- RooWorkspace::import(HLFactoryElaborateExample_ws) importing dataset data1 [#1] INFO:ObjectHandling -- RooWorkspace::import(HLFactoryElaborateExample_ws) importing dataset data2 [HLFactoryElaborateExample] echo: At the end! RooDataSet::data1[x] = 219 entries RooCategory::HLFactoryElaborateExample_category = model2(idx = 1)
input_line_54:19:1: warning: 'data' shadows a declaration with the same name in the 'std' namespace; use '::data' to reference this declaration auto data = hlf_2.GetTotDataSet(); ^
--- Perform extended ML fit of composite PDF to toy data ---
pdf->fitTo(*data);
input_line_87:2:14: error: reference to 'data' is ambiguous pdf->fitTo(*data); ^ input_line_54:19:6: note: candidate found by name lookup is 'data' auto data = hlf_2.GetTotDataSet(); ^ /usr/include/c++/9/bits/range_access.h:318:5: note: candidate found by name lookup is 'std::data' data(initializer_list<_Tp> __il) noexcept ^ /usr/include/c++/9/bits/range_access.h:289:5: note: candidate found by name lookup is 'std::data' data(_Container& __cont) noexcept(noexcept(__cont.data())) ^ /usr/include/c++/9/bits/range_access.h:299:5: note: candidate found by name lookup is 'std::data' data(const _Container& __cont) noexcept(noexcept(__cont.data())) ^ /usr/include/c++/9/bits/range_access.h:309:5: note: candidate found by name lookup is 'std::data' data(_Tp (&__array)[_Nm]) noexcept ^
--- Plot toy data and composite PDF overlaid ---
auto xframe = x->frame();
data->plotOn(xframe);
thecat->setIndex(0);
pdf->plotOn(xframe, Slice(*thecat), ProjWData(*thecat, *data));
thecat->setIndex(1);
pdf->plotOn(xframe, Slice(*thecat), ProjWData(*thecat, *data));
gROOT->SetStyle("Plain");
xframe->Draw();
input_line_88:4:1: error: reference to 'data' is ambiguous data->plotOn(xframe); ^ input_line_54:19:6: note: candidate found by name lookup is 'data' auto data = hlf_2.GetTotDataSet(); ^ /usr/include/c++/9/bits/range_access.h:318:5: note: candidate found by name lookup is 'std::data' data(initializer_list<_Tp> __il) noexcept ^ /usr/include/c++/9/bits/range_access.h:289:5: note: candidate found by name lookup is 'std::data' data(_Container& __cont) noexcept(noexcept(__cont.data())) ^ /usr/include/c++/9/bits/range_access.h:299:5: note: candidate found by name lookup is 'std::data' data(const _Container& __cont) noexcept(noexcept(__cont.data())) ^ /usr/include/c++/9/bits/range_access.h:309:5: note: candidate found by name lookup is 'std::data' data(_Tp (&__array)[_Nm]) noexcept ^ input_line_88:6:57: error: reference to 'data' is ambiguous pdf->plotOn(xframe, Slice(*thecat), ProjWData(*thecat, *data)); ^ input_line_54:19:6: note: candidate found by name lookup is 'data' auto data = hlf_2.GetTotDataSet(); ^ /usr/include/c++/9/bits/range_access.h:318:5: note: candidate found by name lookup is 'std::data' data(initializer_list<_Tp> __il) noexcept ^ /usr/include/c++/9/bits/range_access.h:289:5: note: candidate found by name lookup is 'std::data' data(_Container& __cont) noexcept(noexcept(__cont.data())) ^ /usr/include/c++/9/bits/range_access.h:299:5: note: candidate found by name lookup is 'std::data' data(const _Container& __cont) noexcept(noexcept(__cont.data())) ^ /usr/include/c++/9/bits/range_access.h:309:5: note: candidate found by name lookup is 'std::data' data(_Tp (&__array)[_Nm]) noexcept ^ input_line_88:9:57: error: reference to 'data' is ambiguous pdf->plotOn(xframe, Slice(*thecat), ProjWData(*thecat, *data)); ^ input_line_54:19:6: note: candidate found by name lookup is 'data' auto data = hlf_2.GetTotDataSet(); ^ /usr/include/c++/9/bits/range_access.h:318:5: note: candidate found by name lookup is 'std::data' data(initializer_list<_Tp> __il) noexcept ^ /usr/include/c++/9/bits/range_access.h:289:5: note: candidate found by name lookup is 'std::data' data(_Container& __cont) noexcept(noexcept(__cont.data())) ^ /usr/include/c++/9/bits/range_access.h:299:5: note: candidate found by name lookup is 'std::data' data(const _Container& __cont) noexcept(noexcept(__cont.data())) ^ /usr/include/c++/9/bits/range_access.h:309:5: note: candidate found by name lookup is 'std::data' data(_Tp (&__array)[_Nm]) noexcept ^
Draw all canvases
%jsroot on
gROOT->GetListOfCanvases()->Draw()