Hi Paul, We have many examples of applications using a TList of TClonesArray. I suggest you look at the ATLFAST implementation at URL: http://root.cern.ch/root/Atlfast.html The ATLFast main class has a member TList *m_Makers; //list of makers each maker is a software module that in turn supports one TClonesArray. All Makers derive from a base class ATLFMaker where a common logic for the Root Tree is implemented. Look at the functions: void ATLFMaker::MakeBranch() void ATLFMaker::SetChainAddress(TChain *chain) void ATLFMaker::Streamer(TBuffer &R__b) the AliRoot package from ALICE is using a similar and more elaborated scheme. Rene Brun Paul M. Eugenio wrote: > > Hello, > > I have as a data memeber of an object a TClonesArray. I'm using this object to contain generic device hits and then saving them in a tree. I would like to have many instances (many branches of the same class) of this object in my tree. My object works well with one instance, but I'm finding that I need to add an additional static TClonesArray pointer to the class for each additional instance of that class. So if I have 2 instances of the object, I need 2 static TClonesArray pointer in the class defination. This works, but ultimately I want to have ten's of instances. I've tried to use an array of static TClonesArray pointer, but that failed. Are there any tricks that I can use to get by this limitation? Thanks. > > -- > Paul M. Eugenio > Dept. of Physics > Carnegie Mellon University > (412) 268 6949 > eugenio@ernest.phys.cmu.edu > > _____________________________________________________ > / The scholar should know; one builds science with \ > o O 0 / the facts just like a house can be built of stones; \ > o | but an accumulation of facts is not a science just like | > `\|||/ \ that a pile of stones is not a house. / > (o o) \_____________________________________________________/ > ooO_(_)_Ooo___________________________________________Henri Poincare'_ > _____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|____ > __|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_ > _____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|____
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