// Christian Holm Christensen

TRandom* r = new TRandom;
TH1F* h1 = new TH1F("h1", "Hello World", 100, 0, 10); 
for (Int_t i = 0; i < 1000; i++) h1->Fill(r->Gaus(5,2)); 
TH2F* h2 = new TH2F("h2", "Hello World", 100, 0, 10, 100, 0, 10); 
for (Int_t i = 0; i < 1000; i++) h2->Fill(r->Gaus(5,2),r->Gaus(5,2)); 
TArrayF* a1 = new TArrayF(*h1); 
TArrayF* a2 = new TArrayF(*h2);