Hi Matt, You are likely using an old version. Move to something more recent such as 3.10/02 or 4.00/01 Rene Brun Matthew D Wood wrote: > > Hi. I am trying to use the 'hadd.C' macro in $ROOTSYS/tutorials to > combine a series of files containing both histograms and ntuples. The > program works fine in the case of histograms -- however I find that in the > case of ntuples/trees what it creates is a chain of pointers to trees > in files and not a new tree. So if I delete one of the files I used for > merging I get an error like: > > Error in <TFile::TFile>: file ... does not exist > > I'm sure it is a very simple fix to this macro to have it save the actual > tree to the file rather than the pointers to trees. Thanks. > > Matthew Wood
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