Hi Heather, A fix for the underlying ROOT problem (nested TClonesArrays when the top one is not split and the library is not present) will be upload in the ROOT CVS very shortly. Cheers, Philippe. -----Original Message----- From: owner-roottalk@pcroot.cern.ch [mailto:owner-roottalk@pcroot.cern.ch]On Behalf Of Heather Arrighi Sent: Monday, August 25, 2003 10:57 AM To: roottalk@pcroot.cern.ch Subject: [ROOT] Problem with TTree::BuildIndex Hi, I'm trying to use TTree::BuildIndex with ROOT 3.04.02 on both Windows XP and Redhat Linux 7.2. I have run into a problem - I am trying to build an index using run number and event id. I have 3 types of ROOT files - I can run BuildIndex just fine on 2 of the 3 types. In the 3rd case, I receive a segmentation violation. In the tests I have done, I have only 14 events in my files. Are there any known problems with TTree::BuildIndex? I did a search on roottalk and found little discussion on this method. I have an example ROOT file available via anonymous ftp: ftp-glast.slac.stanford.edu cd glast.u05/examples This directory contains 2 files: digi.root and a text file showing the results I get when I attempt to run TTree::BuildIndex. Thanks, Heather
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