Dear ROOTers, I have an object TTree (nt) which contains a variable x. Now I want to draw and pipe x into a 1d histgram after some cuts. Within ROOT I do: root> nt->Draw("x","cuts"); As far as I understand this automatically creates a temporary hist htemp. So, if I type root> htemp->GetEntries(); I get the number of events after applying the above cut. This works fine within ROOT. Now I have a compiled version of my code. Inside the code I have nt->Draw("x","cuts") which works as expected, i.e. it draws the histogram in my canvas. But now "htemp->GetEntries" returns always "0". Even explicit piping (nt->Draw("x>>somehist","cuts")) doesn't work. Does anybody have an idea how I can access the number of events after the cuts? Thanks. Wolfgang P.S. I use ROOT 3.01/06 on RH 7.1
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