The second branch

Tioukov Valeri (valeri@d500na1.na.infn.it)
Tue, 2 Mar 1999 19:16:44 +0100 (MET)


Dear rooters,

I have 2 TObjArrays and after some selections I need to store objects
from them into the different branches of the tree.

When I have just one branch it works fine. If I add the second all tree
leaves are filled by zeros.

To illustrate a problem I added the following lines into
test/MainEvent.cxx:

// Create one event
....
Track *track1 = new Track();
Track *track2 = new Track();
....
TTree *tree2 = new TTree("T2","My example of a ROOT tree");
tree2->Branch("track1", "Track", &track1, bufsize,split); //1-st branch
tree2->Branch("track2", "Track", &track2, bufsize,split); //2-d branch
....

// inside the event cycle:

if( event->GetNtrack()>1) {
track1 = (Track*)event->GetTracks()->UncheckedAt(1);
track2 = (Track*)event->GetTracks()->UncheckedAt(2);
if (write) tree2->Fill();
}

....

If I just comment the line belongs to one branch the tree filling
correctly.

What is wrong here?

Best regards
Valeri Tioukov