It's probably trivial and I apologize in advance for asking such a stupid question: I would like to plot two variables in a RooT Tree one against the other but NOT as a 2D (or profile) histogram, but rather as a TGraph (or something of this kind) . The point is that I do not want my data points end up in a binned distribution. As an application where this need may arise just imagine a plot like temperature v/s time where temperature is measured at irregular intervals and recorded in a tree together with a time stamp. Is there a way to do it simply (i.e. not looping over the tree and filling C arrays and making a TGraph out of them) ? Arnd ________________________________________________________ Arnd E. Specka E-mail: specka@poly.in2p3.fr * DESY Hamburg, H1 +49 40 8998 2034 (Fax:4385) * Ecole Polytechnique, LLR +33 1 6933 3173 (Fax:3002)
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