How to read data from TNonSplitBrowsable

[zhaodajun]

There is a TBranchElement under the TTree in the Root file. How to read the data in the TNonSplitBrowsable under the TBranchElement?

[eguiraud]

Hello @zhaodajun ,

the answer depends on what you mean with “read”: if you want to programmatically read the values, you can do it as usual using e.g. ROOT: ROOT::RDataFrame Class Reference , or in any case writing a small program in C++ or Python that opens and reads the entries of a TTree. See also Trees - ROOT and our tutorials.

For more specific help, it would be useful if you could share the input file, as well as what code you tried and an explanation of what didn’t work.

Cheers,
Enrico

[Wile_E_Coyote]

Attach the output of: your_tree->Print();

Header files for Trees

“Most recent” documentation about how to generate and use an “analysis skeleton”: TTree::MakeClass (see also “ROOT User’s Guide” → “Trees” → “Using TTree::MakeClass”) TTree::MakeSelector (see also “ROOT Primer” → “File I/O and Parallel Analysis” → “N-tuples in ROOT” → “For the advanced user: Processing trees with a selector script” and “ROOT User’s Guide” → “Trees” → “Using TTree::MakeSelector” and “ROOT User’s Guide” → “Example Analysis”) TTree::MakeProxy ROOT::RDataFrame (uses the T…