Re: Wrong results from R source block when returning a list

[Rainer M Krug <Rainer@krugs.de>]

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"Charles C. Berry" <ccberry@ucsd.edu> writes:

> On Tue, 3 Nov 2015, Rainer M Krug wrote:
>
>> Hi
>>
>> The following code block returns a wrong table / list:
>>
>>
>> #+begin_src R :results value list
>> list(1:10, 1:5)
>> #+end_src
>>
>> #+RESULTS:
>> - (1 1)
>> - (2 2)
>> - (3 3)
>> - (4 4)
>> - (5 5)
>> - (6 1)
>> - (7 2)
>> - (8 3)
>> - (9 4)
>> - (10 5)
>>
>> The result is actually in R:
>
>
> In particular in `org-babel-R-write-object-command' which uses
> write.table() which uses as.data.frame() which dispatches to
> as.data.frame.list() which calls data.frame() where the recycling
> occurs.

Thanks for this info - I thought something along these lines, but this
makes it clear why.

>
> [snip]
>
>> I have no idea if this is a bug or wrong result due to incompatible
>> types (R list and org table)?
>
> If you can't coerce a non-atomic R object to a data.frame and get a
> pleasing result, you need to craft your own solution.

Yup - I did it in R

>
>>
>> Is this mentioned in the manual?
>
> Not that I know of. A comment in `Results Types' in ob-doc-R -
>
> http://orgmode.org/worg/org-contrib/babel/languages/ob-doc-R.html#orgheadline6
>
> - might be helpful.

Yes - thanks,

Rainer

>
> Chuck

-- 
Rainer M. Krug, PhD (Conservation Ecology, SUN), MSc (Conservation Biology, UCT), Dipl. Phys. (Germany)

Centre of Excellence for Invasion Biology
Stellenbosch University
South Africa

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