[kepler-users] (no subject)

[Matt Jones]

The mailing list archives can be searched here;
   http://www.mail-archive.com/kepler-users@kepler-project.org/
   http://www.mail-archive.com/kepler-dev@kepler-project.org/

Regarding your R errors -- are you sure R is on your path and executing?
 Can you execute any of the R demos that ship with Kepler?  If yes, then it
would be most useful if you attach your workflow for people to debug.

An RExpression can contain any valid R code, so multiple loops should be
completely valid.  Of course, the output values that are output from the R
expression are only output at the end of the actor execution, so you need
to be sure to design your R code such that the variables have the proper
values at the end of the execution (e.g., accumulate results in an array as
the loop executes).

Matt

On Wed, Feb 1, 2012 at 12:45 PM, Rohan Sadler <rohan.sadler at uwa.edu.au>wrote:

> Hiya,
>
> Three questions from a newbie:
> 1) Is there a way of searching the Kepler mail list archive so that I'm
> not presenting questions that have already been answered?
>
> 2) I keep getting value 1 error for an R Expression actor - the code works
> fine under R. Any clues as to what I am missing?
>
> 3) Is there anything stopping me from including multiple loops within a
> single R expression for a single R Expression actor?
>
> # R commands within 'R Expression' actor (dummy, but still failing)
> farm.deliveries<-farmDeliveries
>       # mixed types data.frame input port, typed as general
> receival.types<-matrix("",ncol=2,nrow=nrow(farm.deliveries))
> receivalTypes<-receival.types
>        # character valued matrix, typed as general, output port
>
>
> Regards
> Rohan Sadler
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