Hi Rooters,
I am having difficulty using the CloneTree method with a TChain object.
The first of the 2 frags below generates a seg violation the second
behaves as expected and copies 1 event from the tree e896mdst to the file
newtree.root. Thanks for any help.
Sean
{
TChain *e896mdst = new TChain("e896mdst");
e896mdst->Add("/usr/e896disk1/e896/ana/tree/run3071a.root");
// appropriate leave var. defs. and SetBranchAddress calls
TFile *file = new TFile("newtree.root","RECREATE");
TTree * = e896mdst->CloneTree(1);
file->Write();
file->Close();
}
{
f = new TFile("/usr/e896disk1/e896/ana/tree/run3075b.root");
TTree *e896mdst = (TTree*)gDirectory->Get("e896mdst");
// appropriate leave var. defs. and SetBranchAddress calls ..
TFile *file = new TFile("newtree.root","RECREATE");
TTree * = e896mdst->CloneTree(1);
file->Write();
file->Close();
}
_____________________________________________
Sean Kelly
Dept. of Physics
University of California Los Angeles
office tel. (310)-825-6035
fax (310)-206-4397
voice mail (310)-259-3747
_____________________________________________
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