Re: TNtuples and TH3s

From: Rene Brun (Rene.Brun@cern.ch)
Date: Sat Feb 12 2000 - 16:18:21 MET


Hi Glenn,
Thanks for reporting this special case. Now fixed
in my version.

Rene Brun

On Wed, 9 Feb 2000, Glen R. Salo wrote:

> I'm trying to create a 3D Histogram from a TNtuple as follows:
> 
> TFile f("hsimple.root");
> TNtuple *n = (TNtuple *)f.Get("ntuple");
> n->Draw("pz:py:px>>hh","","goff");
> hh->Draw();
> 
> The histogram hh is created, but the axes are not set, and hence, hh be
> drawn.  A simple fix is to replace the third command with:
> 
> n->Draw("pz:py:px>>hh");
> 
> but this draws a 3D view which I do not need.  In the 2D below, the "goff"
> option works just fine.  Is this the desired behavior?  If so, is there a
> simple way to keep the 3D view from appearing?
> 
> TFile f("hsimple.root");
> TNtuple *n = (TNtuple *)f.Get("ntuple");
> n->Draw("py:px>>hh","","goff");
> hh->Draw();
> 
> Thanks for your help,
> 
> Glen
> 



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