How to use two root file for analysis

Dear All,

I have a problem to access two root file.

Initially I was analyzing a *.root file which consist of calib(calibration) and not calib (signal) values. I found the calibration values are changing with time. So we plan to take data in two different root files, one is having calibration data and other is having non calib data (signal). So my question how can I have access to both root file. I am working on c++ compile mode.


Hi Imran,

After re-reading the User’s Chapter on TTree (in particular the part on TChain) do you still have still problem?(note that you describe is too vague to make specific recommendation, a short explanation of what you are current doing would help).