Philippe, Your answer is not completly correct ::) ntuple->Draw("a","b") histograms "a" with a weight "b". This is not the same as histogramming "a*b" Rene Brun On Fri, 5 Apr 2002, Philippe Canal wrote: > 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. > Van Allen Hall > University of Iowa > Iowa City, IA, 52242 > > Voice : (++ 1 319) 335-1941 (W) (GMT-6) > Occupation : Ph.D Candidate (But still dreamer!) > e-mail : ayan@cms.physics.uiowa.edu > web : http://jazz.physics.uiowa.edu/~ayan > > >
This archive was generated by hypermail 2b29 : Sat Jan 04 2003 - 23:50:48 MET