Re: [ROOT] TH1F zoom problem

From: Rene Brun (Rene.Brun@cern.ch)
Date: Thu May 18 2000 - 10:58:24 MEST


Hi Vladimir,
When the default TH1 constructor is called, the axis name is not set.
When zooming with the mouse, TAxis::ExecuteEvent looks for the axis name.
I have fixed this problem in my development version. Meanwhile, you can set the
axis name as shown below:

Rene Brun

Vladimir Pechenov wrote:
> 
> 
>                  Hi,
>  I have a problem  with the Class TH1F :
>  If i execute the following macro:
> 
>  TH1F* hist=new TH1F();
>  hist->SetObject("hist","hist");
>  hist->SetBins(20,0.,20.);
>  hist->Draw();
   hist->GetXaxis()->SetName("xaxis"); <==== add this line
> 
> 
>  i can not use the zoom facility while clicking on the histogram.
> 
>  But the zoom works if i execute the following macro:
> 
> 
>   TH1F* h=new TH1F("a","a",10,0.,10.);
>   h->Draw()
> 
> 
>                                    Vladimir and Danis



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