R & Zeppelin...

["Amos B. Elberg" <am...@gmail.com>]

All:
I have a pending PR, #208, to add an R interpreter to Zeppelin. Last night I pushed a bunch of new code to the PR. In particular, the R interpreter shares a spark context with the Spark interpreter and joins the Spark interpreter group. 

It also starts to add unit tests, with more to come after working out some issues getting spark to startup and shutdown in the scalatest testing environment. 

There should be lots of good stuff here, including interactive visualizations.  And installation of the necessary R packages (rzeppelin, and evaluate, whose authors have granted permission) through maven.

Right now the new commit is showing up in the PR funny... Not sure why, and I'll be working on that and more tests tonight, but for now it's accessible through the PR and in the rinterpreter branch of github.com/elbamos/incubator-zeppelin .

It's definitely at a point where people should be able to start playing with it.

There's a lot of code here to rig R, Scala, and Spark together with callbacks in both directions (as far as I know, this is the only implementation of a jvm-R link to accomplish that, and the only embedding of R in a notebook that allows interactive visualization), so it would really be great if people started beating it up.

Thanks,

-Amos