Dear Root Experts, I am in the process of designing the layout of an event structure using TTree that has a large amount of data in various sub-groups. (This is for the CLAS detector, right now CLAS uses BOS banks.) I would ideally like most of this data to be directly accessible from a TBrowser. I get quite close to what I want using the Event.cxx example, however, I stumble upon the following questions: 1) Is there any way in which the branches can be split deeper that 1 level, so that the data of sub objects are stored in their own baskets ? (Tree->Branch(....,split=1) only splits object one level deep, I'd like 3 deep which would allow for a much more clear organization of the data.) 2) How can I call a member function of a class from one of the objects in the tree, using TTree::Draw() ? (T->Draw("fTrack.GetPx()") of the example does not work, even when the libEvent.so is loaded.) Thank you very much, Maurik P.S. I run Root 2.00/8 on Linux. -- ---------------------------------------------------------------------- Maurik Holtrop web: http://www.physics.unh.edu/Maurik UNH Physics Department tel: (603) 862-2019 | fax: (603) 862-2998 DeMeritt Hall mailto:maurik.holtrop@unh.edu Durham, NH 03824 Home: (603) 659-8765 ----------------------------------------------------------------------
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