Re: [ROOT] TTree friendship based on event numbers?

From: Rene Brun (Rene.Brun@cern.ch)
Date: Fri Feb 14 2003 - 22:28:52 MET 

Hi Brett,

This does not make sense in TTree::Draw. You have to specify somewhere
the pair "Run,Event").
It makes sense in TSelector if you want to read a list of events
from some collection via the Run/Event pair.

Rene Brun


On 
Fri, 14 Feb 2003, Brett Viren wrote:

> Rene Brun writes:
>  > You can use TTree::BuildIndex  [ ... ]
> 
> Okay.  Thanks.
> 
> Is this index used when calling the TTree::Draw() command with values
> from both the parent and the friend tree?
> 
> -Brett.
>

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