Re: [ROOT] draw option after TH1::Sumw2() call

From: Olivier Couet (Olivier.Couet@cern.ch)
Date: Thu Apr 10 2003 - 17:07:32 MEST


Hi Miroslav,

Yes, there is a way to go around. Use option HIST as explained here:

http://root.cern.ch/root/roottalk/roottalk03/1184.html

 Olivier


On Thu, 10 Apr 2003, Miroslav Helbich wrote:

> 
>  Dear all (mainly developers),
> 
> 
>    I encountered a following feature: After calling TH1::Sumw2() method so
> that my error bars after reweighting are calculated correctly I can only
> draw the histogram with errors (e.g. draw option "E" is set
> automatically! and I cannot use options like "L" or "C"). 
> Is there a way to go around? Can it be changed in the next release?
> 
> TH1F* hh = new TH1F("hh","",10,0.,10.);
> hh->Sumw2();
> hh->Fill(4.5,0.5);
> hh->Fill(5.5,0.3);    
> hh->Draw("L"); // draws as with "E"
> 
>  I am using version 3.05/02 on Suse Linux,
> 
> 
> 						Miro
> 
> 
> 

-- 
Org:    CERN - European Laboratory for Particle Physics.
Mail:   1211 Geneve 23 - Switzerland                     Mailbox: J25910      
E-Mail: Olivier.Couet@cern.ch                            Phone:   +41 22 7676522
WWW:    http://cern.ch/Olivier.Couet/                    Fax:     +41 22 7677155



This archive was generated by hypermail 2b29 : Thu Jan 01 2004 - 17:50:10 MET