groups

name language licence
TEventList C++ Other
Add multiple files to a TChain C++ Other
TTree aliases C++ Other
TNtuple simple analysis C++ Other
Maximum likelihood, minuit example C++ Other
Merging trees C++ Other
Convert UInt_t to binary C++ Other
Convert string to integer C++ Other

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language: C++
licence: Other

Merging trees

options: view full snippet • send to code collector 
{

  TList tree_list;

  for ( Int_t i = 1 ; i < 7 ; ++i ) {

    TString f_name = Form("salt_ev_%d.root", i);
    TFile *f_in = new TFile(f_name);
    TTree *t = (TTree*)f_in->Get("ntp");
    tree_list.Add(t);

  }

  TFile *f_out = new TFile("salt_ev.root","recreate");
  TTree::MergeTrees(&tree_list);
(Continues...)