Hi, Rooters,
When I run this script CountingModel.C which copied from this website, twiki.cern.ch/twiki/bin/view/Ro … del_and_fi .
The produced root file, CoutringModel.root, can be opened without any problem.
Because the model I’m trying to apply can’t be expressed by the functions Roofit provided.
So, I have to build a model with a C++ script.
With the help of the script of “rf104_classfactory.C”, after some struggling,
my scripts worked finally : produced a root file.
However, the problems of the root file are
1). it can’t be used to do a hyper test by applying “SimpleHypoTestInv.C”.
2). it can’t be opened normally as the "CoutringModel.root ".
It crashed, and the error message is something like :
~~~~~~~~~~~~~~~~~~ Beginning of error message ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Warning in TClass::TClass: no dictionary for class BkgLinearPdf is available
Warning in TClass::TClass: no dictionary for class OOnePdf is available
root [1] TBrowser a
root [2] Error in TBufferFile::ReadObject: trying to read an emulated class (BkgLinearPdf) to store in a compiled pointer (TObject)
*** Break *** segmentation violation
===========================================================
There was a crash.
This is the entire stack trace of all threads:
…
~~~~~~~~~~~~~~~~~~ End of error message ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
After checking around here, I found similar cases while haven’t been really solved.
[Proof crashing with autoImportClassCode
[root.cern.ch/phpBB3/viewtopic.p … Pdf#p74299](Compiling and using a custom RooFit class
Any expert in this community, could you please take a close look ?
Thanks !
For your reference, I attached my script here : it produce root file normally, but the root file can’t be opened normally.
#include "TTree.h"
using namespace RooFit;
using namespace RooStats;
void CountingModel( int nsig = 1, // number of signal events .
int nbkg = 169) // number of background events.
{
RooWorkspace w("w");
///~~~~~~~~~~~~~~~~~~ Begining of creating a model p.d.f. ~~~~~~~~~~~~~~///
RooClassFactory::makePdf("BkgLinearPdf","x,A,B") ;
#ifdef __CINT__
gROOT->ProcessLineSync(".x BkgLinearPdf.cxx+") ;
#endif
RooClassFactory::makePdf("OOnePdf","x,cof") ;
#ifdef __CINT__
gROOT->ProcessLineSync(".x OOnePdf.cxx+") ;
#endif
w.factory("BkgLinearPdf:bkg_pdf(x[0,10], a[2.5,1.0,30.0], b[-0.0125])");/// a,interceipt; b, slope.
///w.factory("OOnePdf:sig_pdf(x, mass[2], sigma[0.3])");
w.factory("OOnePdf:sig_pdf(x[0,10],cof[1.0,0.01,100.0])");
// Define the fraction of signal .
/// RooRealVar fsig("fsig","signal fraction",0.001,0.,1.) ;
///w.factory("SUM:model(fsig[0,1.0] * sig_pdf, (1 - fsig[0,1.0]) * bkg_pdf)"); // for extended model
w.factory("SUM:model(nsig[0,170]*sig_pdf, nbkg[0,170]*bkg_pdf)"); // for extended model
///[0,1000] is the range of nsig and nbkg. their values assigned above.
///~~~~~~~~~~~~~~~~~~ End of creating a model p.d.f. ~~~~~~~~~~~~~~///
///~~~~~~~ Begining of creating the ModelConfig object and set "b0" as a global observable ~~~///
/// w.var("a")->setVal(a); /// this line shouldn't be necessary for our usage.
w.var("a")->setConstant(true); // needed for being treated as global observables
///w.var("sigmab")->setVal(sigmab*b);
ModelConfig mc("ModelConfig",&w);/// declare the name and reference of ModelConfig as "mc" and "ModelConfig".
mc.SetPdf(*w.pdf("model")); /// The pdf of mc is the "model(pdf, constraint)" from w factory.
mc.SetParametersOfInterest(*w.var("cof")); /// For ModelConfig, the POI is the "s" in w factory.
mc.SetObservables(*w.var("x")); /// For ModelConfig, the observables is the "nobs" in w factory.
///mc.SetNuisanceParameters(*w.var("a"),"nbkg" );/// For ModelConfig, the NP is the "b" in w factory.
w.defineSet("nuisParams","a,nbkg");
mc.SetNuisanceParameters(*w.set("nuisParams") );/// For ModelConfig, the NP is the "b" in w factory.
// these are needed for the hypothesis tests
mc.SetSnapshot(*w.var("cof"));
// need now to set the global observable
mc.SetGlobalObservables(*w.var("a0"));
mc.Print();
// import model in the workspace
w.import(mc);
///~~~~~~~ End of creating the ModelConfig object and set "b0" as a global observable ~~~///
// import a tree
TFile *treefile = TFile::Open("measuredEnergyTree.root");
TTree* tree = (TTree*) treefile->Get("ntuple");
// Define observables x
RooRealVar x("x","x",1,0,11) ;
// Import only observables (x)
RooDataSet ds("ds","ds",RooArgSet(x),Import(*tree)) ;
ds.Print() ;
ds.add( RooArgSet(x));
RooPlot* frame3 = x.frame(Title("import data from a tree")) ;
ds.plotOn(frame3) ;
TCanvas* c = new TCanvas("import data from a tree","import data from a tree ",800,800) ;
gPad->SetLeftMargin(0.15) ; frame3->GetYaxis()->SetTitleOffset(1.4) ; frame3->Draw() ;
w.import(ds);
w.Print();
TString fileName = "CountingModel.root";
// write workspace in the file (recreate file if already existing)
w.writeToFile(fileName, true);
}Thanks !
Best,
Junhui
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