Rene, Thanks for your usual promptness in responding. |> You can force tree.Draw to fill a 2-d histogram, eg |> TH2F h2("h2","my hist",40,-4,4,40,0,100); |> tree.Draw("y:x>>h2"); That definitely worked. However, when doing many cuts on a 2D histogram, this process can get time intensive. I wonder how feasible it would to set the default of tree.Draw to be a 2-D histogram as opposed to a scatter plot? Thanks. regards, Lars -- ______________________________________ Lars Ewell Brookhaven National Laboratory PHENIX Group Physics Dept. 510C Upton, NY 11973 ewell@bnl.gov Phone (631)344-7070 FAX (631)344-3253 www http://ewell.rhic.bnl.gov/~ewell _____________________________________
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