[Halld-physics] Making REST skims

[Paul Mattione]

Yes it does. 

 - Paul

On Feb 12, 2013, at 11:26 AM, Richard Jones wrote:

> 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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> 
> 
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