Thanx!
Balint
On Wed, 8 Dec 2004, Rene Brun wrote:
> yes, it is possible to append new entries to a Tree. Do:
>
> TFile *f = new TFile("myfile.root","update");
> TTree *T = (TTree*)f->Get("mytree");
> T->SetBranchAddress(....) //one for each top level branch
> loop on
> T->Fill();
>
> T->Write();
>
> Rene Brun
>
> Balint Radics wrote:
> >
> > Hello,
> >
> > My question is: Is it possible to append new data columns to an TNtuple
> > after I wrote it to a root file? I mean I would "UPDATE" the root file and
> > add a plus column to my existing ntuple. Is this possible? How?
> >
> > Thanx,
> >
> > Balint
>
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