Hi Emily,
Use a TChain. For example, if you have produced 3 files
file1.root,file2.root,file3.root containing each the ntuple "T"
do
TChain chain("T");
chain.Add("file1.root");
chain.Add("file2.root");
chain.Add("file3.root");
chain.Draw("some variable"); etc like for a TTree
For more info, see the Users Guide.
Rene Brun
On Fri, 4 Jan 2002, Emily Nurse wrote:
> Hello,
> I am just wandering how to add the information from two ntuples. I have
> had to run my Monte Carlo a few times with different random number seeds
> as I have too much data to store on one ntuple and am having some
> difficulties in getting all the information back together.
> Any tips?
> Cheers,
> Emily Nurse.
>
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