[ROOT] reading N-tuples

From: Ilia Ravinovich (ravini@wicc.weizmann.ac.il)
Date: Mon Feb 05 2001 - 11:02:05 MET 

Hi experts,

I have a created root N-tuple and and I have to calculate some variable
using variables from mixed entries in the N-tuple. How I can do it in the
following loop or using some different way ...

   Int_t nentries = (Int_t)ntuple_pair->GetEntries();

   cout << " Entries= " << nentries << endl;

   for (Int_t i=0;i<nentries;i++) {
      ntuple_pair->GetEntry(i);
   }

Thanks,

Ilia

************************************************************************
*                                                                      *
*   Ilia Ravinovich                                                    *
*   Department of Particle Physics             PPE Division            *
*   Weizmann Institute of Science              Bld 892, 1D-015         *
*   Rehovot 76100                              CERN, 1211 Geneva       *
*   ISRAEL                                     Switzerland             *
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*   E-mail: Ilia.Ravinovich@weizmann.ac.il     Ilia.Ravinovich@cern.ch *
*                                                                      *
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