Re: Getting multiple TTree objects when using hadd.

Hi Antonio,

The ;2 does not represent the number of entries in the TTree. Instead it represent the 'version', where here 1 backup version is kept for safety. See the User's Guide for details. The maximum number of entries in a TTree is 2^63-1.

Cheers,
Philippe.

On 1/26/11 4:41 AM, Antonio Augusto Alves Junior wrote:
> Hello,
>
> I am using the hadd routine for merge a TTree contained in a lot of different .root files.
> The problem is that the total of entries is being distributed between two identical TTrees in the merged .root file. When I
> inspect the .root file using a TBrowser object, for example, I find something like "topdir/Tree;1" and ''topdir/Tree;2'' or
> sometimes "topdir/Tree" and "topdir/Tree;1".
>
> There is a maximum number of entries a TTree can store?
>
>
> Regards,
> A.A.
>
>
Received on Wed Jan 26 2011 - 22:45:46 CET