Hi, I've got a small question. I'm currently using root v3_02_07. I want to compare two histograms, say Z mass from data and from MC, therefore I need to superimpose them: z_data and z_mc. They need not to have the same entries certainly. I thought normally I would have to scale one histogram to the other using the function Scale() or smth like this. But as I was a little bit lazy, I did first z_mc.Draw(), then z_data.SetLineColor(kRed) and finally z_data.Draw("E1same") in thinking of refining them later (I got about 60 histos to draw). But surprisingly the plot I see appears to be rescaled already as I wanted to be, was not supposed to do. Are things actually implemented like this or my pleasant unexpectation turns out to be too early? Thanks, Tuan
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