Hi.. TFile *ntfile = new TFile("your file","READ"); TTree *si_adc = (TTree*)ntfile->Get("si_adc"); Float_t inx; si_adc->SetBranchAddress("inx",&inx); Int_t nentries = si_adc->GetEntries(); Int_t nbytes = 0; for (Int_t i = 0;i<nentries;i++) { nbytes = si_adc->GetEntry(i); // This is your space // } bye. NYKim On Thu, 30 Dec 1999, Jayoung Wu wrote: > Hi, > > I created a ntuple, for example > TNtuple *si_adc = new TNtuple("si_adc","SIADC","inx:iny:lay:lad:pat:pix:a0"); > And I filled the ntuple. > > Later I want to access that ntuple by > TNtuple *si_adc = (TNtuple *)ntfile->Get("si_adc"); > > Then what should I do to access to indivisual variable, for example, > inx, iny , a0. ... ? > Should I do something like si_adc->inx->SetAddress(&inx)? > > --- > Thanks, > Jayoung > > >
This archive was generated by hypermail 2b29 : Tue Jan 02 2001 - 11:50:16 MET