Re: [ROOT] TLorentzVector - How to use?

From: David d'Enterria (enterria@in2p3.fr)
Date: Tue Dec 12 2000 - 15:23:46 MET 

Hi Dirk,

TLorentzVector is in libPhysics.so, not loaded by default.
You should do:

  gSystem->Load("libPhysics");

PS: You could have found this information in the roottalk digest. Take a
look e.g. at
http://root.cern.ch/cgi-bin/print_hit_bold.pl/root/roottalk/roottalk00/1842.html

En/Na Dirk Dünkelmann ha escrit:

> it seems to me, that RooT does not know the Physics Vector Classes by
> default.
> root [0] .class TLorentzVector
> Error: class,struct,union or type TLorentzVector not defined  FILE:
> LINE:0
> *** Interpreter error recovered ***
> root [1]
> How can I define it?
> Thanks,
> Dirk

cheers,
--
 David D'ENTERRIA  -  Marie-Curie PostDoc Fellow  -  TAPS·PHENIX·ALICE
 Groupe Photons SUBATECH                        tel: +33 2 51 85 85 60
 4, A. Kastler BP 20722 · 44307 Nantes          fax: +33 2 51 85 84 24
 http://www-subatech.in2p3.fr/~photons        mailto:enterria@in2p3.fr
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