[ROOT] CBNT

From: Andreas Salzburger (Andreas.Salzburger@cern.ch)
Date: Mon Jul 15 2002 - 18:51:57 MEST


dear roottalk-members,

i haven't done a lot with ntuples yet, but now i have to use cbnt
(combined physics ntuple) to make
my analysis.
as the combined physics ntuple has various branches with different numbers
of filled objects (classified by indices like Ntravt, Ntrack, Npar, ...),
i can't just for instance look over nevnt (Tree -> GetEntries()) and
calculate values like (phi_generated - phi_reconstructed), when
phi_generated is numbered by an index called pgen and phi_reconstructed by
an inces called ntrackr.

does anyone know how i could relate them (declaring an Event?).
This would help me a lot.

Thanks,
Andi 



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