Re: [ROOT] read tree in directory inside file

From: Rene Brun (Rene.Brun@cern.ch)
Date: Fri Feb 14 2003 - 10:02:38 MET


Hi Krzysztof,

What you do is OK. It should work.
Please give more explanations and an example where it fails.

Rene Brun

Krzysztof Syryczynski wrote:
> 
> Hello
> 
> In file "Ntuples.root" there is an object, I will call it a directory
> "myDir".
> In this directory there are trees: "treeA", "treeB", ...
> Trees are ntuples with vectors and arrays inside.
> 
> How to read a tree in a way similar to:
> 
> >  TFile *f = new TFile("Ntuples.root");
> >  TTree *treeA = (TTree*)f->Get("myDir/treeA");
> 
> What is missing?
> 
> This file is OK (trees can be read be clicking in Browser).
> 
> I use ROOT 3.03/04 / CINT/ROOT C/C++ Interpreter version 5.15.35 / Red Hat
> 7.2
> 
> Cheers
> Krzysztof



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