Re: [ROOT] ROOT: error bars and continue line

From: Olivier Couet (Olivier.Couet@cern.ch)
Date: Fri Feb 20 2004 - 17:13:45 MET


Hi Annalisa,

I suppose you have something similar to the following example. The option 
"HIST" (as in this example) is the answer to your question.

test() {
   TH1F *histo=new TH1F("sig0","Test!",25,0,100);
   for (int i=1; i<26; i++){
      histo->SetBinContent(i,i);
      histo->SetBinError(i,sqrt(i));
   }
   histo->Draw("");
   histo->Draw("SAME hist *L");
}

 Cheers,          Olivier

On Fri, 20 Feb 2004, Annalisa De Caro wrote:

>   Dear rooters,
> 
> I have a question for you.
> 
> Suppose that you define an histogram (histo3, in the example) as in the following case:
> 
>    TH1F *histo1; // read from file
>    TH1F *histo2; // read from file
> 
>    TH1F *histo3;
>    histo3->Divide(histo1,histo2,1.,1.,"B");
> 
> How can I draw the histogram histo3 with error bars and with a continue line?
> By using the following command:
> 
>      histo3->Draw();
> 
> I see only the error bars and I obtain the same plot by using any drawing option.
> 
> Can you help my?
> 
>    Thank you
>                         Annalisa
> 
> 

-- 
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 : Sun Jan 02 2005 - 05:50:06 MET