Re: [BUG] ob-R.el: extra empty data.frame columns generated from plain lists after recent change [9.6 (release_9.6-3-ga4d38e @ /usr/share/emacs/30.0.50/lisp/org/)]

[Berry, Charles]

Bastien et al,

> On Dec 29, 2022, at 8:00 AM, Bastien Guerry <bzg@gnu.org> wrote:
> 
> I think it would make sense to convert Elisp lists into R lists
> directly.  Jeremie, would you be okay with this?
> 


Perhaps there are some hiccups. 

The R `data.frame' type is a list with some added attributes. In that list each 
top level element is a *column* in the data.frame.

In the elisp list produced by rendering a table as in `:var mydf=atab', each 
top level element is a sequence containing one *row* of the table `atab'.

So if elisp lists are to be converted to R lists, ob-R will need to know 
whether the list came from a table to decide whether to render top level 
elements as list elements or as data.frame rows.

---

There might be some useful applications for converting org lists to R lists and 
vice versa. But it looks like a significant amount of effort to get it right.

Best,

Chuck