th2polyHoneycomb.C File Reference

Detailed Description

This tutorial illustrates how to create an histogram with hexagonal bins (TH2Poly).

The method TH2Poly::Honeycomb allows to build automatically an honeycomb binning.

void th2polyHoneycomb(){
   TH2Poly *hc = new TH2Poly();
   hc->SetTitle("Honeycomb example");
   hc->Honeycomb(0,0,.1,25,25);

   TRandom ran;
   for (int i = 0; i<30000; i++) {
      hc->Fill(ran.Gaus(2.,1), ran.Gaus(2.,1));
   }

   hc->Draw("colz");
}

Author

Olivier Couet

Definition in file th2polyHoneycomb.C.