[ROOT] Re: Histogram Draw option

From: Rene Brun (Rene.Brun@cern.ch)
Date: Wed Jun 04 2003 - 19:06:57 MEST


Hi Siva,

Replace the lines:
 hist1->Fit("fit1","R");
 fit1->Draw("same");
 hist2->Fit("fit2","R");
 fit2->Draw("same");

by

 hist1->Fit("fit1","R");
 hist2->Fit("fit2","R","same");

Rene Brun

On Wed, 4 Jun 2003, Siva Subramania wrote:

> Hi,
> I would like some help here.
> I am trying to plot two histograms on the same pad and fit them both with 
> two separate functions.
> When I say 
> hist1->Draw();
> hist2->Draw("same"); 
> I get both the histograms in the same pad.
> Now I use a fit function fit1 for hist1 and fit2 for hist2.
> I say
> hist1->Fit("fit1","R");
> fit1->Draw("same");
> At this point, I lose the second histogram. I have only the first 
> histogram with the fit.
> but instead of stopping here, I say
> hist2->Fit("fit2","R");
> fit2->Draw("same");
> Now I lose the first histogram but have only the second histogram with 
> the fit. 
> Can anyone tell me, how to get both the histograms with both the fits on 
> the pad without losing either. 
> Just for trying, I gave pad update after every drawing, but still doesn't 
> work.
> Waiting for a reply,
> Thank you,
> 
> Siva.
> 



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