Hello Rene,
Thanks a lot for the info.
Alex
----------------------------------------
Dr. Alexandre Suaide
http://www.dfn.if.usp.br/~suaide/
55-11-3091-7072
Departamento de Física Nuclear
Universidade de São Paulo, Brasil
----- Original Message -----
From: "Rene Brun" <brun@pcbrun.cern.ch>
To: <suaide@if.usp.br>
Cc: "Olivier Couet" <couet@mail.cern.ch>; <roottalk@pcroot.cern.ch>
Sent: Monday, June 28, 2004 2:41 PM
Subject: Re: [ROOT] autoscaling Y axis of an histogram
> This past week-end, I improved the behaviour of the auto scale in Y.
> Now in CVS. Sorry Olivier, I should have tell you ::)
>
> Rene Brun
>
> On
> Mon, 28 Jun 2004 suaide@if.usp.br wrote:
>
> > Hi
> >
> > Which root version you are using? Maybe this is the
> > behavior of the root 4.00/04 for windows version
> > I am using.
> >
> > Alex
> > ----------------------------------------
> > Dr. Alexandre Suaide
> > http://www.dfn.if.usp.br/~suaide/
> > 55-11-3091-7072
> > Departamento de Física Nuclear
> > Universidade de São Paulo, Brasil
> > ----- Original Message -----
> > From: "Olivier Couet" <couet@mail.cern.ch>
> > To: <suaide@if.usp.br>
> > Cc: <roottalk@pcroot.cern.ch>
> > Sent: Monday, June 28, 2004 12:29 PM
> > Subject: Re: [ROOT] autoscaling Y axis of an histogram
> >
> >
> > >
> > > Hi,
> > >
> > > Seems to me the zoom facility does exactly what you ask for. I have
> > > executed your macro, then I did a zoom on the X axis and I get the
> > attached
> > > plot. As you see the Y axis doesn't start at 0.
> > >
> > > Cheers, O.Couet
> > >
> > > On Sun, 27 Jun 2004 suaide@if.usp.br wrote:
> > >
> > > > Here it is
> > > >
> > > > root 4.00/04 for windows
> > > >
> > > > h = new TH1F("h","h",100,0,10)
> > > > for(int i=0;i<50000;i++) h->Fill(gRandom->Gaus(5,2);
> > > > h->Draw()
> > > >
> > > > I zoom from 4.5 to 5.2 and I would expect that the Y
> > > > axis would be zoomed to because the gaussian is
> > > > almost flat in this region. Instead of that the Y axis keeps
> > > > starting at 0 while I would like to have it starting somewhere
> > > > around 800-850.
> > > >
> > > > Regards
> > > >
> > > > Alex Suaide
> > > >
> > > >
> > > >
> > > > ----- Original Message -----
> > > > From: "Rene Brun" <brun@pcbrun.cern.ch>
> > > > To: <suaide@dfn.if.usp.br>
> > > > Cc: <suaide@if.usp.br>; <roottalk@pcroot.cern.ch>
> > > > Sent: Sunday, June 27, 2004 3:52 AM
> > > > Subject: Re: [ROOT] autoscaling Y axis of an histogram
> > > >
> > > >
> > > > > Could you send an example histogram where the autoscaling does not
> > work?
> > > > > Indicate between which bins you are zooming.
> > > > > Also indicate the ROOT version
> > > > > number.
> > > > >
> > > > > Rene Brun
> > > > >
> > > > > On
> > > > > Sat, 26 Jun 2004 suaide@dfn.if.usp.br wrote:
> > > > >
> > > > > > Yes the autoscaling is indeed true but I would like
> > > > > > to set the Y scale with limits corresponding to the
> > > > > > minimum and maximum bin content of that region.
> > > > > > The histogram autoscales but it usually takes the
> > > > > > lower limit for the y axis as zero. This is what I
> > > > > > want to avoid.
> > > > > >
> > > > > > Regards
> > > > > >
> > > > > > Alex
> > > > > >
> > > > > > On Sat, 26 Jun 2004, Rene Brun wrote:
> > > > > >
> > > > > > > I am not sure to understand your request.
> > > > > > > This should be the default behaviour .
> > > > > > >
> > > > > > > Rene Brun
> > > > > > >
> > > > > > > On Sat, 26 Jun 2004
> > > > > > > suaide@if.usp.br wrote:
> > > > > > >
> > > > > > > > Hello all
> > > > > > > >
> > > > > > > > Is it possible to define some property in the
> > > > > > > > histogram, or axis, or somewhere else that
> > > > > > > > enables a kind of autoscaling? I mean, for
> > > > > > > > instance, I have one histogram that the X
> > > > > > > > axis goes from 0 to 10 and, when I zoom
> > > > > > > > it with the mouse from 3.5 to 5.6 it picks
> > > > > > > > the minimum and maximum value in that
> > > > > > > > range for the Y axis and change the limits
> > > > > > > > in the Y axis scale to expand the histogram
> > > > > > > > in that region. Is it possible?
> > > > > > > >
> > > > > > > > Regards
> > > > > > > >
> > > > > > > > Alex Suaide
> > > > > > > >
> > > > > > >
> > > > > > >
> > > > > >
> > > > >
> > > > >
> > > >
> > > >
> > >
> > > --
> > > 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
> >
>
>
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