Re: rebinning 2d histos

Hi all,
as usual: which version of root?
for me it works as expected:

• Version 4.03/05 25 April 2005 * .. root [0] TFile f("hsimple.root") root [1] TH2* h2 = f.Get("hpxpy") root [2] h2->Draw("box") <TCanvas::MakeDefCanvas>: created default TCanvas with name c1 root [3] h2->Rebin2D(5,5) (class TH2*)0x91de7d0 root [4] h2->Rebin2D() (class TH2*)0x91de7d0 root [6] h2->Rebin2D(1,1,"uuu") (class TH2*)0x90ff608

The prototype reads:

   virtual TH2     *Rebin2D(Int_t nxgroup=2, Int_t nygroup=2, const char 
*newname="");     

so no args are required

Cheers
Otto

On Mon, 30 May 2005, Edmond Offermann wrote:

> Hi,
>
> Looking at the reference guide, I see
>
> virtual TH2* Rebin2D(Int_t nxgroup = 2, Int_t nygroup = 2, const char*
> newname)
>
> So I guess you have to supply also newname .
>
> Eddy
>
> --- "Jorge A. Benitez" <benitez_at_fnal.gov> wrote:
> > Hi,
> > I'm trying to rebin some 2d histograms, I'm getting the following
> > error:
> >
> > Error: Can't call TH2F::Rebin2D(5,5) in current scope FILE:makebeni.C
> >
> > LINE:101
> >
> > the piece of the code giving the error is:
> >
> > TH2F* hist_pp;
> > hist_pp=(TH2F*)d_plots->Get("LEtaUJetEta_pp");
> > hist_pp->Rebin2D(5,5);
> >
> > What else should I include to make it work.
> > THanks,
> >
> > Jorge
> >
> >
>

-- 
Dr. Otto Schaile            Department f"ur Physik, LMU M"unchen
Phone: +49 89 289 14070     Am Coulombwall 1, D-85748 Garching, Germany
Mobil: +49 160 1553598
FAX:   +49 89 289 14072     EMail: Otto.Schaile_at_Physik.Uni-Muenchen.DE