Hi Kevin, You can naviguate with the browser in the files and double click on the histogram to draw. >From the command line or a macro, you can do: TH1F *h100 = (TH1F*)one.Get("h100") h100->Draw() or if you just want to draw histograms, do eg: one.Get("h100")->Draw(); two.Get("h100")->Draw("same"); Rene Brun On Wed, 28 Jun 2000, Kevin M. Rhodes wrote: > Today's problem: > > Let's say that I have 4 .root files. Each one contains 100 histograms, > each using the same numbering system. After I load all four files, how > can I tell root that I want > > h101 from one.root > > rather than > > h101 from three.root > ?? > > This novice once again appreciates any answers > > > Kevin Rhodes > UW Madison > Amanda Group >
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