Hi Tom, 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.
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. Matt On Tue, Mar 30, 2010 at 1:05 PM, Tom Wainwright <Thomas.Wainwright at noaa.gov>wrote: > Hi, > > 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.) > > Poking about, I found Kepler-2.0-RC1 on > http://dist.kepler-project.org/dist. I downloaded and ran it, and my > problem seems to be fixed. > > 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? > > Thanks! > > -- > Tom Wainwright > NOAA Northwest Fisheries Science Center > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > The contents of this message are mine personally and do not necessarily > reflect any position of the Government or the National Oceanic and > Atmospheric Administration. > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > _______________________________________________ > Kepler-users mailing list > Kepler-users at kepler-project.org > http://mercury.nceas.ucsb.edu/kepler/mailman/listinfo/kepler-users > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://mercury.nceas.ucsb.edu/kepler/pipermail/kepler-users/attachments/20100330/2e47390d/attachment.html>
