Philippe Canal wrote: > Hi Walter, > > Can you give me access to your ROOT file so that I can reproduce the > problem? > >> tree->Draw("pct.t.amp[0]:pct.t.xo"); >>works, but of course displays a different correlation (usually >>not the intended one). > > This should be the same as tree->Draw("pct.t.amp[0][]:pct.t.xo"); (which is > different for the other call you mentioned). How is it different from what > you expect? The problem I wanted to address is that ROOT crashes when one enters tree->Draw("pct.amp[0]:pct.xo") or tree->Draw("pct.t.amp[0]:pct.xo") while it works fine for tree->Draw("pct.t.amp[0]:pct.t.xo") It is true (and I checked) that tree->Draw("pct.t.amp[0][]:pct.t.xo") tree->Draw("pct.t.amp[0]:pct.t.xo") give the same result. My remark "usually not the intended one" was a little misleading and just refected that sometimes people type "amp[0]" when they want to see "amp[][0]", so they get "amp[0][]" which is a different thing. Cheers, Walter -- Walter F.J. Mueller Mail: W.F.J.Mueller@gsi.de GSI, Abteilung KP3 Phone: +49-6159-71-2766 D-64291 Darmstadt FAX: +49-6159-71-2989 WWW: http://www-kp3.gsi.de/www/kp3/people/mueller.html
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