Chejeck subatech etudiant polonais wrote: > Hello, > > I have a litle problem. I take two histograms from two different files > *.root, and I'd like to have these ones one the same graph to compare > them. Maybe it's very easy what I'm asking but I spent few hours, I'was > looking for help on root's sites, but I didn't find it. > > I will be grateful for any help. > Zibi > Hi, Hi, you can find here a example: { TFile *pfic_root = new TFile("file.root","READ"); TH1F *h_1 = (TH1F*)pfic_root->Get("h_1_dans_root_file"); h_1->SetName("h_1"); h_1->SetDirectory(0); TH1F *h_2 = (TH1F*)pfic_root->Get("h_2_dans_root_file"); h_2->SetName("h_2"); h_2->SetDirectory(0); pfic_root->Close(); h_1->Draw(); h_2->Draw("same"); } --------------------------------------------- Luc Perrot Etudiant doctorant (PhD) Groupe Reacteurs Hybrides 53 Avenue des Martyrs 38026 Grenoble Cedex France tel : 04 76 28 40 93 ---------------------------------------------
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