Hello, I am trying to write a CINT program to read some blocks of my ntuple, here I send to you an example of the booking of two blocks of this ntuple. if(_L2_process.value()==true) { _ntuple=&_manager->ntuple("MyNtuple",1); _ntuple->setColumnWise(); _ntuple->setDiskResident(); _ntuple->columnAt("L2CalJet::NclusT",&_nclusL2Jet,(Int4)1); _ntuple->span("L2CalJet::NclusT",0,_n2clst); _ntuple->columnAt("L2CalJet::sumEtT",&_sumEtL1,(Float4)0.); } if(_Met_process.value()==true) { _ntuple->columnAt("MET::met",&_uncorrMet,(Float4)0.); _ntuple->columnAt("MET::xsum",&_xSum,(Float4)0.); _ntuple->columnAt("MET::ysum",&_ySum,(Float4)0.); _ntuple->columnAt("MET::sumet",&_sumEt,(Float4)0.); } I can have a look to the leaves. I start clicking on different buttons. Finally the canvas appear in the screen without problems. TFile f("stnmaker.root") TBrowser b However, when I try to use the autogenerated code (equivalent of PAW's UWFUNC) in my CINT program: TFile *file = new TFile("ntuple.root","READ","RUN-II") TTree *t; file->cd("MyDirectory"); t = (TTree*)gDirectory->Get("Myntuple"); t->MakeClass("MyAna") I introduce the next declarations following a similar syntax than in MyAna: //Declaration of leaves types Int_t L2CalJet_NclusT; Float_t L2CalJet_sumEtT; Float_t MET_met; Float_t MET_sumet; Float_t MET_xsum; Float_t MET_ysum; // List of branches TBranch *b_L2CalJet; TBranch *b_MET; // Set branch addresses t->SetBranchAddress("L2CalJet",&L2CalJet_NclusT); t->SetBranchAddress("MET",&MET_met); When I try to access to the information in the branches with my loop I can not get the information of the leaves, for example, the variable MET_met is always zero. void MetAnal() { Int_t nbytes = 0; Int_t i; // ...........loop over entries.................. Int_t nentries = chain->GetEntries(); printf("Total number of entries in chain = %d\n",nentries); for (i=0; i<nentries;i++) { if(i % 1000 ==0) printf("analysed:%d\n",i); nbytes += chain.GetEvent(i); cout << MET_met <<endl; } } Thanks for your help, Susana Cabrera. ************************************************************** * Susana Cabrera Urban cabrera@cdfsga.fnal.gov * * * * Fermilab Tf: (630)840-5003 * * P.O. Box 500, MS 318 Fax: (630)840-2968 * * Batavia, IL 60510 * * U.S.A. * **************************************************************
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