[kepler-users] Problems with Sample Workflow 1

[Dan Higgins]

Hi Kurt,
    Yes, that workflow does require R. That is indicated by the 'R' 
symbol in the lower left of the SummaryStatistics actor. [Clearly we 
need a better error message!]. R is included with the installer version 
of Kepler for Windows, but not for Linux or MacOS. You can find a 
version of R to install for the Mac or Linux at www.r-project.org. Just 
install it and the workflow should run (as long as you can enter 'R' on 
a command line and start the R program).

Dan Higgins - NCEAS

Kurt Stockinger wrote:
> Hi,
>
> I seem to have problems with the workflow 00-StatisticalSummary in
> demos/getting-started. I always get a null pointer exception:
>
> java.lang.NullPointerException
>    at org.ecoinformatics.seek.R.RExpression.fire(RExpression.java:474)
>    at ptolemy.actor.AtomicActor.iterate(AtomicActor.java:337)
>    at
> ptolemy.actor.sched.StaticSchedulingDirector.fire(StaticSchedulingDirector.java:170)
>
>    at ptolemy.actor.CompositeActor.fire(CompositeActor.java:331)
>    at ptolemy.actor.Manager.iterate(Manager.java:668)
>    at ptolemy.actor.Manager.execute(Manager.java:327)
>    at ptolemy.actor.Manager.run(Manager.java:1044)
>    at ptolemy.actor.Manager$3.run(Manager.java:1085)
>
> I've download Kepler and tested it both on Linux and MacOS X. In both
> cases I get the same results.
>
> Does this workflow require R?
>
> Thanks,
> Kurt
>
> _______________________________________________
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> Kepler-users at ecoinformatics.org
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>   


-- 
*******************************************************************
Dan Higgins                                  higgins at nceas.ucsb.edu
http://www.nceas.ucsb.edu/    Ph: 805-893-5127
National Center for Ecological Analysis and Synthesis (NCEAS) Marine Science Building - Room 3405
Santa Barbara, CA 93195
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