I have been working on ROOT since past 4 months. I have seen various .root files and analyzed them. Recently I downloaded one .root file from opendata.cern.ch but couldn’t understand the information given in that file.
This is the url of page from which I downloaded the file named :
Please let me know if there is any way of decoding the information given in the file.
It contains TTrees. If you do not know what they mean you should ask the author of these TTrees.
To be more concrete:
you can do:
root  .ls
OBJ: TTree Events : 0 at: 0x7fbb6b6a57b0
KEY: TTree MetaData;1
KEY: TTree ParameterSets;1
KEY: TTree Parentage;1
KEY: TTree Events;1
KEY: TTree LuminosityBlocks;1
KEY: TTree Runs;1
I have tried your command but could not understand what it printed. I’ll try contacting author. Thank you.
The MetaData tree should be helpful to understand the data.
The OpenData web site also has some description of the data.