RE: Simultaneously accessing data from two trees in different root files

From: Philippe Canal <pcanal_at_fnal.gov>
Date: Thu, 27 Dec 2007 22:41:09 -0600

Hi,

I think you meant:

 T1->Draw("Ptlep1");
and
 T2->Draw("Ptlep1", "", "same");

The 2nd argument to TTree::Draw (see Reference's guide) is the selection and is _not_ the graphic option.

Cheers,
Philippe.

-----Original Message-----
From: owner-roottalk_at_root.cern.ch [mailto:owner-roottalk_at_root.cern.ch] On Behalf Of Anil Singh
Sent: Friday, December 21, 2007 2:00 PM
To: ROOT Talk
Subject: [ROOT] Simultaneously accessing data from two trees in different root files

Dear rooters

    I have two root file each containing a tree. The trees have exactly same architecture. I can draw from a branch using

---

     T1->Draw("Ptlep1")
and

    T2->Draw("Ptlep1")

---

    But I want to draw the "Ptlep1" from both the rootfiles (each containing either tree), on the same canvas. I tried

---

 T1->Draw("Ptlep1")
and
 T1->Draw("Ptlep1", "same")

====================================== This did not work. Any Suggestions

????????

A Singh
Fermi LAB Received on Fri Dec 28 2007 - 05:42:54 CET