I am not sure what is the proper way to project an ntuple into a profile
histogram. I would like to predefine a profile TProfile with "x" range
and number of bins, and "y" range. If I use then Draw("x:y>>hprof",..,"prof")
should I still put cut on "y" or shall it be automatically done via hprof
predefined "y" range?
Andrzej.