Hi Bill, I do not understand this problem. Could you send -a very short data file -a short script showing the problem Rene Brun > William Love wrote: > > Rooters > I have been caught by this several times. I fill a root TTree including a > TClones array called Tracks[]. The length of the array for each event > is in a variable Ntrack. If I histogram Ntrack for 40 events I see an > average of 415 entries per event or about 16600 tracks total. > If however I do TTree->Draw("Tracks.phi") I get 21671 entries in the > histogram and many are identical copies of phantom tracks from other > events. Is there a simple (Short of TTree->MakeClass) way to tell > Draw() to use the NTrack variable to limit the number of members of > the Track[] array it uses? > Bill Love >
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