I use the experimental RReader function to compactly evaluate a TMVA xml file in an RDataFrame based framework.
Is there a recommended way of using “spectator variables” in the RReader?
The following declaration :
crashes with the error below:
: Dataset[Default] : You declared 0 spectators in the Reader while there are 1 spectators declared in the file
I am aware of the TTree based methods where one explicitly declares a spectator variable, but would not want to roll back to explicitly looping over events for the purposes of TMVA evaluation.
Thanks in advance for your help and happy holidays!