Re: Fill TH2 with TTree

Jean-eric,

This is quite simple. do:
  tree.Draw("x:y","z")

or, if you want to add a selection
  tree.Draw("x:y","z*(u<v)")

Rene Brun

On Wed, 11 May 2005, Jean-Eric Campagne wrote:

> Hello,
> Is there a simple way to project a TTree with 3 variables (x,y,z) into a
> TH2 (x,y) with z as a weight?
> If possible I would like to avoid h2d->Fill(x,y,z) as I do not know a
> priori the Xlow/high values and Ylow/high value...
> Regards
> Jean-Eric
>
>
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Received on Wed May 11 2005 - 13:25:28 MEST