Hi, Matthieu,
I think there are two simple ways to do it:
1) TNtuple *my_newTNtuple = my_TNtuple->CopyTree("x>0");
my_newTNtuple->SetName("my_newTNtuple");
2) TNtuple *my_newTNtuple = my_TNtuple->CloneTree(0);
my_newTNtuple->CopyEntries(my_TNtuple);
The functions CopyTree, CloneTree, CopyEntries are the member functions
of class TTee from which TNtuple is derived.
Regards --Shuwei
On Thu, 14 Sep 2000, Matthieu Guillo wrote:
> Hi,
>
> I have a Ntuple (TNtuple object) and I would like to write a
> subselection of it, using a TCut, into another TNtuple object.
> Say in my TNtuple "myNtuple", I have a variable x, and I would like to
> save entries of "myNTuple" that have x > 3 into a new TNtuple
> "my_newTNtuple".
>
> Does anybody knows how to do that?
>
> Thanks
>
> --
> Matthieu Guillo
> Thomas Jefferson National Laboratory
> Office 71 trailer 16
> Phone: 757-269-5551
>
>
>
This archive was generated by hypermail 2b29 : Tue Jan 02 2001 - 11:50:32 MET