Github user jeffsteinmetz commented on the pull request:
https://github.com/apache/incubator-zeppelin/pull/702#issuecomment-203267658
@echarles I updated the R notebook tutorial with a minor improvement in
this patch:
https://github.com/datalayer/zeppelin-datalayer/pull/9
I noticed passing variables between scala and R is working quite well.
I previously thought there was an issue passing a scala Array to R, but it
was because the Array was being treated as a multi-dimensional list in R.
I updated the R tutorial notebook with a small addition of `unlist` to
flatten the array to show the variable as a single list.
for example:
```
%spark
val a: Array[Double] = Array[Double](30.0, 20.0)
z.put("a", a)
%r
aa <- unlist(z.get("a"))
print(aa)
```
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