Re: [ROOT] TTree question

From: Rene Brun (Rene.Brun@cern.ch)
Date: Thu Nov 14 2002 - 22:59:07 MET


Hi,

use tree->GetSelectedRows().
Also the return value of tree->Draw

Rene Brun

On Thu, 14 Nov 2002, payman hosseini wrote:

> hi
> thank you for your help
> i have another question
> 
> 
> assume i have 
> tree->Draw(branch1)
> 
> Double_t x_arr=tree->GetV1();
> gives the x axis
> 
> how can i get the counts for each of the elements in the x_arr?
> 
> thank you very much
> 
> 
> Paymon Hosseini
> 
> On Thu, 14 Nov 2002, Rene Brun wrote:
> 
> > I do not understand your question. Please explain better what
> > you want to do. If you are new to Root, I suggest to read the
> > examples at $ROOTSYS/test/tree0,1,2,3,4.C
> > 
> l> Rene Brun
> > 
> > On Wed, 13 Nov 2002, payman hosseini wrote:
> > 
> > > 
> > > hi
> > > 
> > > asuume one has the following tree
> > > 
> > > branch1		branch2	
> > > 1		0
> > > 1		1
> > > 2		0
> > > 2		1
> > > 3		0
> > > 3		1
> > > 
> > > is there an easy way to break up this tree, so one will have the following
> > > 
> > > branch1		branch2		branch3		
> > > 1	0	2	0	3	0
> > > 1	1	2	1	3	1
> > > 
> > > 
> > > 
> > > thanks
> > > 
> > > paymon hosseini
> > > 
> > 
> 



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