TomasDado

Hi, this issue is causing us problems running differential cross-section measurements using RDataFrame. It is very common that you have events passing the detector level selection but not the truth...

Thanks for the comment, I updated the code to use the Snapshot options, the issue I saw was related to Define() and not Snapshot()

Thanks for the ping @ferdymercury. Maybe it helps if I give some information to the best of my knowledge regarding this issue and ATLAS. We definitely have data periods where...

Thanks for opening the issue and for the example script! Indeed, this is exactly what I had in mind. Regarding the interface, the model should include the correlatation/covariance matrix so...

Hmm that is a fair point. Indeed, we often estimate the correlation by bootstrapping data (of coruse out simulation should hopefully give something similar but only data have the "real"...