sifuluo
February 27, 2019, 10:50pm
1
When I was trying to analyze a root file, which contains a tree that contains multiply subbranches.
Then t->MakeClass().
vector<short> SubBranch1;
// vector<short> SubBranch1;
branch* b_Branch1_SubBranch1;
branch* b_Branch2_SubBranch1;
In init():
fChain->SetBranchAddress("SubBranch1",&SubBranch1,&b_Branch1_SubBranch1);
fChain->SetBranchAddress("SubBranch1",&SubBranch1,&b_Branch2_SubBranch1);
In such case, only the Branch1.SubBranch1 is read, and the other is just discarded.
vector<short> SubBranch1_1;
vector<short> SubBranch1_2;
branch* b_Branch1_SubBranch1;
branch* b_Branch2_SubBranch1;
fChain->SetBranchAddress("Branch1.SubBranch1",&SubBranch1_1,&b_Branch1_SubBranch1);
fChain->SetBranchAddress("Branch2.SubBranch1",&SubBranch1_2,&b_Branch2_SubBranch1);
In this case, it returned Error:
Error in <TTree::SetBranchAddress>: unknown branch -> Branch1.SubBranch1
Error in <TTree::SetBranchAddress>: unknown branch -> Branch2.SubBranch1
Is there anyway that I can access the branches here if Branch.Subbranch is not the solution here?
_ROOT Version:6.10/09Platform: Not ProvidedCompiler: Not Provided
sifuluo
February 27, 2019, 11:05pm
2
Simply put, I have no problem doing t->Scan(“Branch1.SubBranch1”),
Perhaps @pcanal can give a hand?
system
March 15, 2019, 8:43am
4
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pcanal
April 2, 2019, 8:53pm
6
Can you copy the result on tree->Print() for you TTree?
Hi pcanla,
Thanks for the help, below is the output of the command:
*Tree :L1UpgradeTfMuonTree: L1UpgradeTfMuonTree *
*Branch :L1UpgradeBmtfMuon *… … … … … … … … … … … … … … … … … … … … … … … … … … … … … … … … … … … … … … … … … … … … … … … … … … … … … … … … … … … … … … … … …