Hello ROOTers, I have a 2D histogram on top of which I want to superimpose a TEllipse and a TLine: everything works fine in interactive mode, as I simply do a Draw("same") and the overlay is correctly superimposed. I now want to produce a bunch of these plots (TH2F + TEllipse + TLine) in batch mode, i.e. without drawing the histogram but only saving them into a file. Is there any way to superimpose the overlay only in memory without displaying it? In other terms, is it possible to attach (in some sense) objects (like TLines and TEllipses) to an histogram? Many thanks, Andrea Fontana (Athena Experiment)
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