Otto Schaile wrote: > > Dear roots, > I tried the above HOWTO, (I can view the ntuple 5000 with rows: > RUN, EVENT,E_ECAL etc correctly with paw, > with root I get: > > root [0] TFile f("ntz0mu94.root") > root [1] f.ls() > TFile** ntz0mu94.root > TFile* ntz0mu94.root > KEY: TTree h5000;1 EVENT > KEY: TH1F h100;1 EBEAM > KEY: TDirectory TR;1 TR > root [2] h100.Draw() > Warning in <MakeDefCanvas>: creating a default canvas with name c1 > root [3] h5000.Draw("EVENT"); > > *ERROR 26 : > Unknown name : "EVENT" > I am a bit lost ! Is EVENT the title of your Tree or a Tree variable ? Please gime more info (directly to me, not the list). Rene Brun
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