Dear rooters,
I would like to read from file and draw to the same canvas
some histograms with the same name but different cycle.
root [0] TFile datafile("hpede.root")
root [1] TH1F * histo1 = (TH1F *) datafile.Get("Pedestal_1;21")
root [2] TH1F * histo2 = (TH1F *) datafile.Get("Pedestal_1;22")
root [3] TH1F * histo3 = (TH1F *) datafile.Get("Pedestal_1;23")
It is clear that I cannot draw the first histogram:
root [4] histo1->Draw()
but I can draw the third one.
How can I save the buffer of the first and second histogram
( ... and later discard them without memory leakage )?
Thank you,
cheers,
Stefano Piano
P.S. My root version is 3.05/02 compiled by gcc 3.2.2 on
I32 gentoo linux with vanilla kernel 2.4.20
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