Re: analyzing some events, not all

[Elton Smith <elton@jlab.org>]

Hi Mark and David,

The option to scan a specific list of events is EXTREMELY useful,
especially in combination with the same capability in the event display. A
very general way to implement this is to have the option for the analysis
(or event display) to process events off an ascii file list of event
numbers.  This removes any complexity (i.e. logic) in creating the list
from the analysis programs. It also allows the event list to edited by
hand (which is sometimes useful).

That's my proposal for implementation of such a capability.

Cheers, Elton.





Elton Smith
Jefferson Lab MS 12H5
12000 Jefferson Ave
Suite # 16
Newport News, VA 23606
elton@jlab.org
(757) 269-7625
(757) 269-6331 fax

On Thu, 17 Jul 2008, David Lawrence wrote:

>
> Hi Mark,
>
>     Currently, there are no options to have JANA skip events and read
> only a subset of them as you describe. It would not be a hard feature to
> implement, it just hasn't been done. I will add that to the JANA wiki
> page where I try to keep track of future improvements:
>
> http://www.jlab.org/Hall-D/software/wiki/index.php/JANA/DANA
>
> Regards,
> -David
>
> Mark M. Ito wrote:
> > Dave,
> >
> > I know I have asked this before, but I don't recall the answer: is there
> > a way in jana to analyze a subset of events, say only the first 100
> > and/or only events listed in a file? I remember you had a way to specify
> > configuration parameters but don't remember if these options exist.
> >
> > I do remember that you referred me to hddm_cull_events. I have tried
> > that and it works very well, especially for the single event scenario.
> > It would also work for the 100 event scenario mentioned above, but I am
> > still curious about having the jana program select the events.
> >
> >  -- Mark
> >
> >
>
> --
>
> ------------------------------------------------------------------------
>   David Lawrence Ph.D.
>   Staff Scientist                 Office: (757)269-5567   [[[  [   [ [
>   Jefferson Lab                   Pager:  (757)584-5567   [  [ [ [ [ [
>   http://www.jlab.org/~davidl     davidl@jlab.org         [[[  [[ [[ [[[
> ------------------------------------------------------------------------
>
>
>