I've finally got around to fiddling with TreeViewer and have some questions on how to work it with ntuples. I've been using 3.10.01 on both linux and XP. * If I start the viewer from scratch (no open file) and try to open a file, I just get a message on the console telling me to use the right-pane context menu to set a tree name. I can do that, but nothing comes of it. No file (or tree) appears in the left pane. * On linux how do I navigate to a different filesystem with File/Open? * Ok, so if I start it from an existing tree (chain actually in my case), I cannot seem to reset the tree name, even though the (chained) files contain more than one tree in fact. * Is there a way to set an expression to be an existing TCut? It seems to always try to evaluate it as an expression from the ntuple columns. * Does the progress bar do anything during a Draw? I have yet to see it be different from 0. * What does the red "record" button do? It seems a pretty handy-dandy tool for ntuple analysis, especially if I could figure out these usability issues! Thanks, Richard -- Richard Dubois Stanford Linear Accelerator Center Stanford, CA 650-926-3824 650-926-8616 (FAX) http://www.slac.stanford.edu/~richard
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