Hi Tom,<div><br></div><div>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.</div>
<div><br></div><div>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.</div>
<div><br></div><div>Matt<br></div><div><br><div class="gmail_quote">On Tue, Mar 30, 2010 at 1:05 PM, Tom Wainwright <span dir="ltr"><<a href="mailto:Thomas.Wainwright@noaa.gov">Thomas.Wainwright@noaa.gov</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">Hi,<br>
<br>
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.)<br>
<br>
Poking about, I found Kepler-2.0-RC1 on <a href="http://dist.kepler-project.org/dist" target="_blank">http://dist.kepler-project.org/dist</a>. I downloaded and ran it, and my problem seems to be fixed.<br>
<br>
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?<br>
<br>
Thanks!<br>
<br>
-- <br>
Tom Wainwright<br>
NOAA Northwest Fisheries Science Center<br>
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The contents of this message are mine personally and do not necessarily<br>
reflect any position of the Government or the National Oceanic and<br>
Atmospheric Administration.<br>
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