ROOT Version: 6.24.06
I need to save RVectors of LorentzVectors to a new root file. Currently we are running a RDataFrame script in pyroot which uses pre-compiled C++ functions (see cernbox link at the bottom of post). When running the python function, it gives the following error log:
Error in TTree::Branch: The class requested (vector<ROOT::Math::LorentzVector<ROOT::Math::PtEtaPhiM4D > >) for the branch “jets_LV” is an instance of an stl collection and does not have a compiled CollectionProxy. Please generate the dictionary for this collection (vector<ROOT::Math::LorentzVector<ROOT::Math::PtEtaPhiM4D > >) to avoid to write corrupted data.
We also tried to pass a vector of vector (std::vector<std::vector>) from C++ to Python, but it gives a similar error. What can I do in this case? Any help would be appreciated.