auto nEvents = 128U;
auto d_s = ROOT::RDF::MakeTrivialDataFrame(nEvents);

auto h_s = d_s.Define("x", "1./(1. + col0)").Histo1D({"h_s", "h_s", 128, 0, .6}, "x");

ROOT::RDataFrame d(nEvents);

auto g = []() {
   static ULong64_t i = 0;
   return i++;
};
auto h = d.Define("col0", g).Define("x", "1./(1. + col0)").Histo1D({"h", "h", 128, 0, .6}, "x");

auto c_s = new TCanvas();
c_s->SetLogy();
h_s->DrawClone();

auto c = new TCanvas();
c->SetLogy();
h->DrawClone();

return 0;

gROOT->GetListOfCanvases()->Draw()