Hi Avi > > TH2F *Track_Banch=new TH2F("Track_Banch","Track Numbers vs. BanchNumbers - 5.9 GeV/c" , 1000 , 0 , 50 , 1000 , 0 , 20); > > Why do you need such precision (1000 bins) for integer numbers ? Surely "new TH2F("...","...",50,0,50,20,0,20)" or "...51,-0.5,50.5,21,-0.5,20.5)" would be more reasonable ? > > I got this error: > > Warning in <TH2F::Fill(Axis_t, Stat_t)>: may not use this method > > But what was the TH2F::Fill command which provoked this error ? Can you send the (excerpt from the) script ? Cheers John -- John D. Frankland Beam Coordinator GANIL B.P. 55027 14076 CAEN Cedex 05 tel: +33 (0)231454628 fax: +33 (0)231454665
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