Hello Rene, Thank You for Your reply. Now I understand the point.. Now I just want to ask: 1) why objects start to duplicate in my case? 2) is it really good to create objects in memory by default while reading a tree? 3) if I don't want default behavior what should I do ( I mean, what flag must be set to avoid creating objects in memory). Once more Thank You very much Best regards, Stanislav. On Mon, 17 Jun 2002, Rene Brun wrote: > Hi Nesterov, > > When calling whell->GetEntry, you request to read all the branches > of your Tree. If you want to read only one single branch, get > the pointer to the branch and call branch->GetEntry. > > In your case, you should do something like: > > TBranch *b_Spec = wheel->GetBranch("Spec"); > TH1 *Spec=0; > b_Spec->SetAddress(&Spec); > b_Spec->GetEntry(22); > delete Spec; Spec=0; //to delete the current hist > Spec=0; // if you want to keep the current hist in memory > b_Spec->GetEntry(23); /etc.. > > Rene Brun >
This archive was generated by hypermail 2b29 : Sat Jan 04 2003 - 23:50:57 MET