Re: [ROOT] TSelector::Process, WAS: (empty)

From: Rene Brun (Rene.Brun@cern.ch)
Date: Fri Nov 22 2002 - 18:39:23 MET


Hi Axel,

I already answered this question this morning

Rene Brun


Hi Davide,

This new function generated by MakeSelector was introduced in 3.03/09
in view of PROOF. The comments in the generated code are a bit misleading
and will be improved.
We will provide a documentation on how to use this facility with PROOF
when a working version of PROOF will be released.

Continue to use the ProcessCut function for the time being.

Rene Brun


On Fri, 22 Nov 2002, Axel Naumann wrote:

> Hi,
> 
> I was wondering as well. Looking at TTreePlayer it seems TSelector::Process
> is never called, only ProcessCut gets called (I'm too lazy to actually test
> that now). Could someone clarify what TSelector::Process is for and what the
> difference to ProcessCut is?
> 
> Cheers, Axel.
> 
> > -----Original Message-----
> > From: owner-roottalk@pcroot.cern.ch
> > [mailto:owner-roottalk@pcroot.cern.ch]On Behalf Of Davide Grandi
> > Sent: Friday, November 22, 2002 4:47 AM
> > To: roottalk@cern.ch
> > Subject:
> >
> >
> > Dear rooters,
> > 	in the new version of root (3.03.09 on a Linux machine, Intel 2.0
> > Ghz double processor) using MakeSelector there is a new bool part of the
> > .C file, essentially the Process part (see below). Sorry for my ignorance
> > but what is the main difference with ProcessCut (it is not mentioned in
> > the example in the Users Guide...)?
> >
> > Bool_t test2::Process(Int_t entry)
> > {
> >    // Processing function.
> >    // Entry is the entry number in the current tree.
> >    // Read only the necessary branches to select entries.
> >    // To read complete event, call fChain->GetTree()->GetEntry(entry).
> >    // Return kFALSE as stop processing.
> >
> > }
> >
> > Bool_t test2::ProcessCut(Int_t entry)
> > {
> >    // Selection function.
> >    // Entry is the entry number in the current tree.
> >    // Read only the necessary branches to select entries.
> >    // Return kFALSE as soon as a bad entry is detected.
> >    // To read complete event, call fChain->GetTree()->GetEntry(entry).
> >
> >    return kTRUE;
> > }
> >
> >
> > Thanks
> >
> > Davide Grandi
> >
> >
> > **********************************************************************
> > $      Davide  Grandi					             %
> > $      INFN Milano		e-mail	Davide.Grandi@mib.infn.it    %
> > $      P.zza delle Scienze 3    phone	+39 02 6448 2306             %
> > $      20126 MILANO		fax	+39 02 6448 2367	     %
> > $      ITALY		                                 	     %
> > $       						 	     %
> > $      at CERN			e-mail
> > Davide.Grandi@cern.ch	     %
> > $      CH-1211 Geneve CH        phone	+41 22 767 9403		     %
> > $                               Bldg.   506 room R018                %
> > $               or              phone   +41 22 767 7560              %
> > $                               Bldg.   576 room R002                %
> > &&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&
> >
> >
> >
> 



This archive was generated by hypermail 2b29 : Sat Jan 04 2003 - 23:51:20 MET