[kepler-users] Status of Kepler-2.0?

[ben leinfelder]

Tom,
While different versions of R do have subtle differences that can  
cause undesired behavior of the RExpression actor, I actually think  
it's not that esoteric of an issue that you're encountering.
I've tried running the 00-StatisticalSummary.xml workflow with Kepler  
1.0 and R 2.10.1 in the PATH on my system and it worked just fine.
Can you verify that R is indeed on your PATH?
Thanks,
-ben

On Mar 30, 2010, at 2:22 PM, Matt Jones wrote:

> Hi Tom,
>
> Kepler 2.0.0 is being prepared for release, and is going through  
> testing.  For that purpose, we are developing a series of release  
> candidates.  These will not be supported after 2.0.0 comes out, but  
> any issues you find with them would be valuable to report to kepler- 
> dev to improve the quality of the release.  Discussion of the new  
> release occurs on kepler-dev rather than kepler-users.
>
> For 1.0.0, the reason that you are probably having trouble is your R  
> version.  Kepler 1.0.0 shipped with an earlier version of R (2.6.2),  
> and the R actor was fairly sensitive to the particular version used  
> (because different R versions serialize their output differently).   
> I believe that Ben has upgraded to R 2.10 for the 2.0.0 release  
> series (hopefully he'll confirm), which is why things probably work  
> now for you.  This is just a guess on my part, but likely is related  
> to the problem.  If you want 1.0.0 to work, install a parallel copy  
> of the old version of R and put it first on your path and I'll bet  
> Kepler 1.0.0's R functionality will work for you again.
>
> Matt
>
> On Tue, Mar 30, 2010 at 1:05 PM, Tom Wainwright <Thomas.Wainwright at noaa.gov 
> > wrote:
> Hi,
>
> I have been trying to use Kepler 1.0.0 to organize some complicated  
> R-based analyses, and have run into some problems.  In particular,  
> the "getting-started" example "00-StatisticalSummary.xml" produces  
> no output, and results in NullPointerException errors in the  
> RExpression class.  (It worked last year, but not now--I am  
> currently running Fedora-11 x86_64 Linux, with R version 2.10.1 and  
> java version "1.6.0_17" OpenJDK.)
>
> Poking about, I found Kepler-2.0-RC1 on http://dist.kepler-project.org/dist 
> .  I downloaded and ran it, and my problem seems to be fixed.
>
> I haven't seen any public announcement about availability of the  
> RC.  Is this something that is useable at this point?  For learning  
> and early development, should I go ahead and use it, assuming bugs  
> will be fixed in the near future?
>
> Thanks!
>
> -- 
> Tom Wainwright
> NOAA Northwest Fisheries Science Center
> ~ 
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> The contents of this message are mine personally and do not  
> necessarily
> reflect any position of the Government or the National Oceanic and
> Atmospheric Administration.
> ~ 
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