Lots to document here ...
The code is divided into two parts: one that only has a connection to GENIE and the other that knows about ART.
nutools / GENIE interface¶
rwgt::GENIEReweight class wraps the GENIE
ReweightAna_module shows how one would find the
GTruth structures in the ART record and calculate new weights. It uses a
rwgt::NuReweight object to reconstitute a GENIE
GHEP record from the ART products
Nathan Mayer (former NOvA collaborator) wrote most of this code that interfaces from ART to GENIE. Here are some of his talks on the subject: