Good morning,
I need an help. I have two root files, containing some trees, that have the same names for each root file. I want to some them. But I can not use the hadd command, because I have to sum the 20% of the entries of one file, with the 50% of the entries of the other. How is it possible to do this?
Then I want to do the same thing with two root files, containing histos.
Thank you so much
A