ROOT data frame - unsupported leaf value

[Wile_E_Coyote]

Read 2-dimensional c-array branch with RDataFrame

Hi, I created a RDataFrame reading a TTree. The Tree has branches: const int kNPmax = 250; int brStdHepN; // Number of particles in particle array double brStdHepP4 [kNPmax][4]; // 4-p (px,py,pz,E) of particle in LAB frame (GeV) rootracker_tree->Branch("StdHepN", &brStdHepN, "StdHepN/I"); rootracker_tree->Branch("StdHepP4", brStdHepP4, "StdHepP4[StdHepN][4]/D"); The question is which type should I use to read the RDataFrame co…