Hello In file "Ntuples.root" there is an object, I will call it a directory "myDir". In this directory there are trees: "treeA", "treeB", ... Trees are ntuples with vectors and arrays inside. How to read a tree in a way similar to: > TFile *f = new TFile("Ntuples.root"); > TTree *treeA = (TTree*)f->Get("myDir/treeA"); What is missing? This file is OK (trees can be read be clicking in Browser). I use ROOT 3.03/04 / CINT/ROOT C/C++ Interpreter version 5.15.35 / Red Hat 7.2 Cheers Krzysztof
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