[kepler-users] Problems with Sample Workflow 1

[Kurt Stockinger]

Hi Dan,

Ok, thanks. I will install R and try it out.

Thanks,
Kurt

Dan Higgins wrote:
> 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
>>
>> _______________________________________________
>> Kepler-users mailing list
>> Kepler-users at ecoinformatics.org
>> http://mercury.nceas.ucsb.edu/ecoinformatics/mailman/listinfo/kepler-users
>>
>>   
>
>