GetListofLeaves and Friends

ROOT
1

Hi rooters,

I am trying to get the list of leaves of a tree to which a friend has been attached.

The simplest case of my problem can be shown as follows:

myTree->AddFriend(…);
myTree->GetListOfLeaves()->ls();

The ls() command will only show the leaves of my initial tree, not those contained into my friends. I was thinking to access the friend separately (i.e. reload it) but this would be in complete contradiction with the concept of friends.

Note that myTree->Draw(“a_leaf_in_my_friend”) works perfectly, so as does myTree->GetLeaf(“a_leaf_in_my_friend”)->GetValue().

What am I doing wrong?

I basically want to use a loop (i < myTree->GetListOfLeaves()->GetEntries()) to check if the leaf name (myTree->GetListOfLeaves()->At(i)->GetName()) contains a certain string, in order to process that leaf. I’d prefer something like a search with wildcard feature but couldn’t find one.

Can anyone help me on this?

Thanks

Karolos

2

see :http://root.cern.ch/root/html/TTree.html#TTree:GetIteratorOnAllLeaves

This function creates an iterator that will go through all the leaves on the tree itself and its friend.

Rene

3

Thanks Rene

Karolos