ROOT for 'Old Good PAW' Users

Example with a file called "ntuple.root" and a ntuple name called "CBNT/t1"

PAW ROOT
h/file 1 ntuple.root TFile* hfile = new TFile("ntuple.root");
h/li hfile.ls(); // Ntuple name is provided behind KEY & is declared as TTree
h/pl xxxx hist = hfile->Get("variable_name"); hist->Draw();
TTree* ntuple = (TTree*) hfile->Get("h3333");
n/print 1 ntuple->Print();
uwfunc 1 myfunc.f ntuple->MakeClass("myfunc");
zone 2 2 TCanvas *c1 = new TCanvas("c1","c1",300,600);
c1->Divide(2,2);
n.pl 1 var1 var2 ntuple.Draw("var1:var2");