Skip to content

Instantly share code, notes, and snippets.

@nsahoo

nsahoo/read_only_few_branches_ROOT

Last active August 29, 2015 14:19
Show Gist options
  • Save nsahoo/136dc28d8a7baeba0925 to your computer and use it in GitHub Desktop.
Save nsahoo/136dc28d8a7baeba0925 to your computer and use it in GitHub Desktop.
Download ZIP
how to access/read only selected branches in ROOT
Raw
read_only_few_branches_ROOT
To read only selected branches,
fChain->SetBranchStatus("*",0); //disable all other branches
fChain->SetBranchStatus("genQ2", 1); //activate this branch name
fChain->SetBranchStatus("genCosTheta*", 1); //activate this branch name
fChain->SetBranchStatus("genMu*", 1); //activate this branch name
fChain->SetBranchAddress("genQ2", &gQ2);
fChain->SetBranchAddress("genCosThetaK", &gCosThetaK);
fChain->SetBranchAddress("genCosThetaL", &gCosThetaL);
fChain->SetBranchAddress("genMupPt", &gmuppt);
fChain->SetBranchAddress("genMupEta", &gmupeta);
fChain->SetBranchAddress("genMumPt", &gmumpt);
fChain->SetBranchAddress("genMumEta", &gmumeta);
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment