Hi,
the headers to include to use a certain ROOT class can usually be found at the bottom of the class documentation page (in this case, bottom of this page).
To save you a click, it’s #include <ROOT/RDataFrame.hxx> 
Cheers,
Enrico
Hi,
the headers to include to use a certain ROOT class can usually be found at the bottom of the class documentation page (in this case, bottom of this page).
To save you a click, it’s #include <ROOT/RDataFrame.hxx>
Cheers,
Enrico