Rene Brun wrote: > > Alexander is suggesting 4-d, 5-d histograms, N-d histograms. However > I believe that ntuples are a better alternative and give you more > freedom (as pointed by Pasha). I do not see this as a constraint > for the class hierarchy. > I think n-dim histograms should be supported. I was once forced to implement such thing to store 4-dim two-particle correlation data. Storing binned data was, in my case, much more convenient than storing ntuples: the 4-dim histograms were much smaller, and they were easier to fit. (In my implementation the bin contents were physically kept in a 1-dim HBOOK histogram, and I had one 1-dim histogram for each axis. I only wrote routines for booking, filling, and projecting. ) Best regards Dariusz Miskowiec -- +-------------------------------------------------------------------+ + Dariusz Miskowiec E-mail: D.Miskowiec@gsi.de + + GSI, Planckstr. 1 Phone: 0049-6159-712-133 + + D-64291 Darmstadt Fax: 0049-6159-712-785 + +-------------------------------------------------------------------+
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