Re: write vector<TLorentzVector> in a branch

you might want to
gSystem->Load("libPhysics.so") if you haven't already. cheers,
Venkat

Asif Saddique wrote:
> Hi Rooters,
>
> I am trying to write a vector of TLorentzVector as a branch in a root
> tree but getting some error. I don't get any compilation error but
> error when i run the code over the data. I am using root 5.28.
>
> The structure of my code is like this:
>
> ============================================
> TFile *file = new TFile("myfile.root","recreate");
> TTree tcal("tcal","Calibration Tree");
> vector<TLorentzVector> theJets;
> tcal.Branch("theJets",&theJets);
>
> // EventLoop
> {
> //JetLoop
> {....
> TLorentzVector jet.............
> theJets.push_back(jet)
> }
> tcal.Fill();
> }
> tcal.Write();
> =============================================
>
> When i run this code i get following error:
> ===============================
> Error in <TTree::Branch>: The pointer specified for theJets is not of
> a class or type known to ROOT
> ===============================
>
> Can anyone suggest what's going wrong?
>
> Cheers, Asif
>
>

-- 
=========================================================
Venkatesh Kaushik
Research Associate

University of Arizona              ATLAS Experiment_at_CERN
Office: PAS 334                    40-1-C11
Tucson, Arizona                    Genève, Switzerland
Tel: +1 520 626 7042               +41 22 76 79137
venkat_at_physics.arizona.edu         venkat.kaushik_at_cern.ch
       http://atlas.physics.arizona.edu/~venkat
=========================================================