Hi, Consider a class TEvent containing a pointer to an object TDetectorAEvent, which contains itself TClonesArrays and some other objects. Everything inherit from TObject. If we write a tree with a TEvent in a branch and set maximum splitting, TDetectorAEvent will not split because it is not an object itself but a pointer (and even if it is an object only splits one level). This behaviour is documented. Only pointers to TClonesArray work. The workarounds I can think of are: 1.- Manual splitting of TEvent, which may be extremely tedious if TEvent contains many data members. 2.- Remove the pointer to the object and use an object itself. This allows at least one level of splitting, but having objects themselves and not pointers does not allow dynamic allocation. Are there any other, more interesting, solutions ? Will splitting of pointers to TObjects be supported in a near future ? Thanks! ROOT 3.03/08 in RedHat 7.2 Carlos Muņoz SPhN/CEA-Saclay
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