Is there a convinient way to Add content of one Ntuple to

ROOT
1

Hello,

Is there a convenient way to Add content of one Ntuple to another?

I am trying to use CopyEntries, Merge and so on. But the result is
strange: some funny number are copied (0 or something else) and the
program does not work. And I even cannot compile the version with
Merge function (v3.05/07).

Thanks a lot :slight_smile:

2

In version 4.00/06, we added a new function TTree::Merge. See:
root.cern.ch/root/htmldoc/src/TT … Tree:Merge

If you use an old version, take the code from this function. The important thing is to call CopyAddresses(tree)

Rene