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.