I get a crash when I do $ root -l $ROOTSYS/tutorials/hsimple.root OBJ: TStyle ildStyle ILD Style : 0 at: 0x279cec0 root [0] Attaching file /opt/root/tutorials/hsimple.root as _file0... (TFile *) 0x31af890 root [1] TH1F *h = (TH1F*)(_file0->GetListOfKeys()->At(0)->Clone()) (TH1F *) 0x37…

This was bothering me and I realized I had run into it before. It is an issue with using static casts and not realizing what we are casting. GetListOfKeys gives a list of TKey objects! You were casting them to TH1F. The GetName method works as they both inherit from TObject, but there is no GetMean …

How to get a histogram from a ROOT file with ROOT 6.10?

ROOT

couet June 22, 2017, 11:56am 4

I see. May be what is suggested here can help: