Creating RooDataSet with TChain

[amadio]

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Roofit - RooDataSet + TChain

Hello! I was trying to create a RooDataSet with the data from a TChain, but I’m receiving the following error: Function Import(*ch) is not defined in current scope teste4.C:25: My code: > { > TChain *ch = new TChain("tree_name"); > ch->Add("file*.root"); > RooRealVar tofhit_tmax("tofhit_tmax","tofhit_tmax",-100,100); > RooDataSet* ds = new RooDataSet("ds","ds", tofhit_tmax,Import(*ch)); > > } `` I tried using the “using namespace RooFit”, but I received a mor…