Hi Rooters, suppose I have an event class holding a set (a list, array, TClonesArray or whatever) of objects representing particles, let's call the AbsParticles. AbsParticle is an abstract class, holding some basic obvious information (masses, momenta, etc); what I use actually are concrete classes that inherit from it, adding extra functionalities and data members; for example, a PiZero class would hold pointers to two Photon objects, where both PiZero and Photon inherit from AbsParticle. So the list in a k->3Pi0 event, for example, contains 6 Photons and 3 PiZeros. The point is: how can I get all the objects split in branches in the output tree, so that I can nicely browse them? A TClonesArray wouldn't do, since the objects are not clones. A TObjArray cannot be split. Or can it? Any hint? Thanks, Stefano -- +---------------------------------------+ | Stefano Bagnasco | | I.N.F.N. and University of Torino | +---------------------------------------+ | Home: +39.011.819.6991 | | Office: +39.011.670.7340 | | GSM: +39.348.1868717 | | bagnasco@to.infn.it sbagnasco@iol.it | +---------------------------------------+
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