RE: [ROOT] meaning of ntuple->Draw("a","b")

From: Philippe Canal (pcanal@fnal.gov)
Date: Fri Apr 05 2002 - 21:46:13 MEST

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Hi Ahmet,

The 2nd argument is actually a 'weight'. So
	ntuple->Draw("a","b") 
plots "a*b" if b is non-zero.

Cheers,
Philippe.

-----Original Message-----
From: owner-roottalk@pcroot.cern.ch
[mailto:owner-roottalk@pcroot.cern.ch]On Behalf Of Ahmet Sedat Ayan
Sent: Friday, April 05, 2002 1:30 PM
To: roottalk@pcroot.cern.ch
Subject: [ROOT] meaning of ntuple->Draw("a","b")




Hi Rooters,

What is meaning of the following if we have an ntuple with variables, a,
b, c,.. etc ?  Can I take it as <<Draw "a" if b is non-zero>> ?

ntuple->Draw("a","b") 

cheers,
ahmet

***************

Ahmet Sedat Ayan		

Physics & Astronomy Dept.
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University of Iowa
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e-mail     : ayan@cms.physics.uiowa.edu
web        : http://jazz.physics.uiowa.edu/~ayan

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