The mailing list archives can be searched here;<div> <a href="http://www.mail-archive.com/kepler-users@kepler-project.org/">http://www.mail-archive.com/kepler-users@kepler-project.org/</a><br><div> <a href="http://www.mail-archive.com/kepler-dev@kepler-project.org/">http://www.mail-archive.com/kepler-dev@kepler-project.org/</a><br>
<br>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.</div>
<div><br></div><div>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).</div>
<div><br></div><div>Matt</div><div><br><div class="gmail_quote">On Wed, Feb 1, 2012 at 12:45 PM, Rohan Sadler <span dir="ltr"><<a href="mailto:rohan.sadler@uwa.edu.au">rohan.sadler@uwa.edu.au</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Hiya,<br>
<br>
Three questions from a newbie:<br>
1) Is there a way of searching the Kepler mail list archive so that I'm not presenting questions that have already been answered?<br>
<br>
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?<br>
<br>
3) Is there anything stopping me from including multiple loops within a single R expression for a single R Expression actor?<br>
<br>
# R commands within 'R Expression' actor (dummy, but still failing)<br>
farm.deliveries<-farmDeliveries # mixed types data.frame input port, typed as general<br>
receival.types<-matrix("",ncol=2,nrow=nrow(farm.deliveries))<br>
receivalTypes<-receival.types # character valued matrix, typed as general, output port<br>
<br>
<br>
Regards<br>
<font color="#888888">Rohan Sadler<br>
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</font></blockquote></div><br></div></div>