Hi, I have root file which contained several TTree. I want to separate them in different files. So i try: TFile *f = new TFile("origin.root"); TTree *t = h1; //h1 one of the Tree name f2 = new TFile("h1.root","RECREATE"); t->Write(); f2->Close(); But i found the h1.root is very small and do not contain all the information of the origin Tree. Actually i did this before, but i can not find the right way do it now. Anyone can help me on this? Datao Gong
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