Re: [ROOT] min and max of Y-axis

From: Rene Brun (Rene.Brun@cern.ch)
Date: Wed Oct 02 2002 - 23:58:07 MEST


Hi,

I assume that you want to access the maximum value of a histogram and
not the maximum value in Y of the pad. If yes, use
  h->GetMaximum();

Rene Brun

On Thu, 3 Oct 2002, Guillaume Blanc wrote:

> Hello,
> 
> Perhaps this question is obvious, but I would like to get the max value on
> the Y axis of a TH1F histo. I tried : h->GetYaxis()->GetXmax() but it
> doesn't work (return a wrong value); note that the equivalent command
> works for the X axis. And gPad->GetUymax() returns also a
> wrong value (closer to the one expected, but still wrong)...
> I just would to add another X axis on top of my plot with a different
> scale: I need the Y axis max value in order to position it accurately...
> 
> Well, if anybody has a idea!
> 
> Thanks for your help,
> 
>                   Guillaume Blanc
> 



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