a problem of using of ntuple's selection

From: Zhou Zhang (zhozhang@ic.sunysb.edu)
Date: Sat Mar 04 2000 - 00:28:22 MET 

Hi rooter talkers,

  I have a ntuple which holds a lot of tracks with a weight w. 
Each tuple of the  track  has px,py,pz which are the three momentum
components of the track. 

  when I use ntuple.Draw("ntracks","1/w && px == 2. "), the plot looks
that the normalization cut "1/w" is not applied. Have anyone met such
problem before? Who could give me some advices to solve it?

                             Thanks

                                    Zhou

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