[kepler-users] Keeping R environment between R actors

[ben leinfelder]

Tommy,
The current implementation of the R actor (RExpression) starts an  
entirely new R session (as though you'd quit and then re started R  
from the the command line) for every R actor in the workflow. As you  
know - this can get costly, and I'm afraid you won't be able to keep  
those libraries loaded across each actor.
There has been some development with an alternative R actor  
implementation (RExpression2) that uses native Java-R bindings and a  
single R interpreter across actors. I'm still finding kinks in this  
"JRI" implementation (it can crash _hard_), but feel free to try it  
out - it may be just what you are looking for in terms of maintaining  
your environment.
-ben

On Aug 14, 2009, at 3:29 PM, Tommy Stropp wrote:

> I was wondering if there is any way to keep the same environment  
> going between R actors within the same workflow. I know I can save  
> the workspace, but that doesn't save the libraries I've loaded. I  
> have to load each one that I was using before again in the new R  
> actor, which is time consuming as some of them are quite large and  
> take a long time to load.
>
> - Tommy
>
> Attention all humans. We are your photos. Free us.  
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