RE: [ROOT] TChain after a TTree::MakeClass() call ?

From: Philippe Canal (pcanal@fnal.gov)
Date: Sat Sep 28 2002 - 00:58:26 MEST 

Hi Fred,

You can either modify the constructor of the generated class.
to contains something along the line (this comes from a MakeClass generated
from a TChain):
	TChain * chain = new TChain("treename","");
	chain->Add("file.root");
	tree = chain;
Or you can do it before instantiate the object and passed as a parameter:
	TChain * chain = new TChain("treename","");
	chain->Add("file.root");
	MadeByMakeClass m(chain);
	m.Loop();

Cheers,
Philippe.

-----Original Message-----
From: owner-roottalk@pcroot.cern.ch
[mailto:owner-roottalk@pcroot.cern.ch]On Behalf Of Fred Sarazin
Sent: Friday, September 27, 2002 5:44 PM
To: roottalk@pcroot.cern.ch
Subject: [ROOT] TChain after a TTree::MakeClass() call ?


Hello,

I generated a class with TTree::MakeClass().

If I want the Loop() method to inspect trees of same
structure located in different files,  where do I declare
the TChain and its elements and how do I relate
it to TTree *fChain ?

Thanks,

Fred

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