[Halld-physics] Making REST skims

[Richard Jones]

Paul,

Does the original plugin retain its original behavior?  Just including the datarest plugin on the command line should automatically cause it to generate a REST output file containing all of the input events from all sources.

-Richard J.

On 2/11/2013 9:47 PM, Paul Mattione wrote:
> I've just checked code into the repository that allows users to create skimmed hddm files in the REST format (I moved the core REST-writing code from the danarest plugin to libraries/HDDM/DEventWriterREST.cc).  To use it, you need to check out new versions of the HDDM and DANA libraries (and check out the danarest plugin as well to keep it up to date).
>
> In short, just add these lines to your plugin:
>
> vector<const DEventWriterREST*> locEventWriterRESTVector;
> locEventLoop->Get(locEventWriterRESTVector);
> locEventWriterRESTVector[0]->Write_RESTEvent(locEventLoop, "b1pi");
>
> And it will save the event in the REST format in a file called "dana_rest_b1pi.hddm."
>
> Also, you can simultaneously skim events to several different REST files within the same plugin, even during multi-threaded execution.  E.g.:
>
> if((locNumPositiveTracks >= 2) && (locNumNegativeTracks >= 2))
> 	locEventWriterRESTVector[0]->Write_RESTEvent(locEventLoop, "2+_2-");
>
> if((locNumPositiveTracks >= 3) && (locNumNegativeTracks >= 2))
> 	locEventWriterRESTVector[0]->Write_RESTEvent(locEventLoop, "3+_2-");
>
> will create two different skims, dana_rest_2+_2-.hddm and dana_rest_3+_2-.hddm, containing REST events with those track topologies.
>
>   - Paul
>
>
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