Is it possible to use event lists to selectively grab entries in a tree/file and copy them to a new file? Something like create event list from old tree, do oldtree->SetEventList then clone/copy entries to a new tree, but only the ones specified in the event list? I tried just that from the copytree example in the tutorials, but got a full copy of oldtree... The basic idea is that we have 400 MB of files, we want to select out about 25 MB and simply create a new file with just the 25 MB. Thanks, Richard -- Richard Dubois Stanford Linear Accelerator Center 650-926-3824 650-926-8616 (FAX) richard@slac.stanford.edu http://www.slac.stanford.edu/~richard
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