Hi all,
I'm trying to add a large number of files that contain several
different trees (same set of trees in each file).
I know that for cases with one tree per file, the way to go is
TChain::Merge("add.root"). However, this does not work if I want to
have all my trees in one file at the end.
The macro
http://root.cern.ch/root/html/examples/hadd.C.html
claims to be able to do it, but it only creates empty trees in the
file (works fine for histograms, though...)
I would not mind doing the operation in two steps, eg. creating one
file per tree with TChain::Merge() and then combining these files into
one, but I don't see how to do that...
Thanks for your help!
Frank
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| Frank Simon http://www.mppmu.mpg.de/~fsimon |
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