From mboxrd@z Thu Jan  1 00:00:00 1970
From: Nick Dokos <ndokos@gmail.com>
Subject: Re: cannot execute org-mode code from the front page tutorial.
Date: Sat, 16 Aug 2014 17:01:44 -0400
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Charles Berry <ccberry@ucsd.edu> writes:

> Nick Dokos <ndokos <at> gmail.com> writes:
>
>> 
>> tsd <at> tsdye.com (Thomas S. Dye) writes:
>> 
>> > Aloha Jenia,
>> >
>> > jenia.ivlev <at> gmail.com (jenia.ivlev) writes:
>> >
>> >> Hello.
>> >>
>> >> I'm trying to go through the org-mode tutorial on its official page.
>> >>
>
> [discussion showing that (if (listp value)...) generates a data.frame 
> deleted]
>

Ah, that's what's happening!

> [delete patch turning a data.frame into a vector]
>
>> And assuming this is correct, the worg page will need to be corrected
>> too.
>>
>
> No patch is needed.
>
> The point of the code in  org-babel-R-assign-elisp is to create a data.frame
> when `value' is a list.
>
> The patch adding `unlist(res)' turns it into an ordinary vector.
>
> This will break almost all uses of :var in R scr blocks.
>
> I don't think this example could have worked for a long while - turning
> elisp lists into R data.frames has been a feature for a good while. 
> Also, note the use of `sbe' vs `org-sbe' in the formula.
>
> #+TBLFM: @2$1='(sbe "R-mean" (x "tbl-example-data()"))
>
> Use `colMeans(x)' to fix the worg page.
>

Thanks! As penance, I'll try to fix the worg page (unless somebody beats
me to it of cource).

-- 
Nick