Re: problem with Branch

Hi John,

I can not reproduce this problem (i.e it is likely to be cause by some of the code your are
not describing here). Could you send a complete running example showing the problem?

Cheers,
Philippe.

John Idarraga wrote:
> Hello ROOT,
>
> I experienced the following strange behaviour. I am putting in a Branch
> the variable 'dE_p2' which holds an structure as specified in the
> following call to TTree::Branch(....)
>
> tree->Branch("p2", &dE_p2.px, "px:py:pz:E:M:PT:Eta:Phi");
>
> Now, all those variables are Float_t. This works alright, no problem.
> But, if I do the following
>
> tree->Branch("p2", &dE_p2.px, "px/F:py:pz:E:M:PT:Eta:Phi");
>
> The value of py and pz gets overridden by the value of px on an
> entry-per-entry basis. As far as I understand from the documentation,
> when the type is not specified, the default is 'F'. But if I do specify
> it, it should still work, right ? Something I didn't understand ? Bug
> already fixed or understood may be ?
>
> I am using ROOT 5.22/00 on linuxx8664gcc
>
> thanks a lot,
>
> John Idarraga
>
>
>
Received on Sat Aug 29 2009 - 22:02:04 CEST