Re: [babel] R - variable names in summary

From: Dan Davison <davison@stats.ox.ac.uk>
To: Graham Smith <myotisone@gmail.com>
Cc: emacs-orgmode@gnu.org
Subject: Re: [babel] R - variable names in summary
Date: Wed, 09 Dec 2009 14:14:28 -0500	[thread overview]
Message-ID: <87vdggdkob.fsf@stats.ox.ac.uk> (raw)
In-Reply-To: <2c75873c0912090905y5d673fe3m879e7e79e77f3c89@mail.gmail.com> (Graham Smith's message of "Wed, 9 Dec 2009 17:05:48 +0000")

Graham Smith <myotisone@gmail.com> writes:

> Dan,
>
>>> The colnames t works as expected, but how do I then see the variable
>>> names when using the summary command,
>>
>> Just use :colnames t again for that.
>
> Thanks again, I almost had this solved but in
>
> #+begin_src R :session babeltest :colnames t
>
> I hadn't left a space between the end of babeltest and the :
>
> But I would never have figured out the :results output  method, however.

OK, it would be really helpful if you could let us know how we should
improve the documentation of it.

>
> Next question is is to do with output with things like summary. In R
> if you have lots of variables,the output wraps so it fits on the
> screen. With babel it runs off the edge of the page. is there a quick
> way of getting the output to fit an anticipated a4 pdf output.

I'd suggest using :results output, and controlling the width of the
output with options(width=whatever) in R. E.g.

#+begin_src R :session babeltest :colnames t :results output
options(width=80)
summary(cbind(babeltest, babeltest))
#+end_src

#+results:
#+begin_example
       ID             var1           var2          var3             ID       
 Min.   : 1.00   Min.   :23.0   Min.   :1.0   Min.   :200.0   Min.   : 1.00  
 1st Qu.: 3.25   1st Qu.:34.0   1st Qu.:4.0   1st Qu.:355.0   1st Qu.: 3.25  
 Median : 5.50   Median :45.5   Median :5.0   Median :425.0   Median : 5.50  
 Mean   : 5.50   Mean   :48.4   Mean   :4.8   Mean   :418.9   Mean   : 5.50  
 3rd Qu.: 7.75   3rd Qu.:56.0   3rd Qu.:6.0   3rd Qu.:499.8   3rd Qu.: 7.75  
 Max.   :10.00   Max.   :89.0   Max.   :7.0   Max.   :600.0   Max.   :10.00  
      var1           var2          var3      
 Min.   :23.0   Min.   :1.0   Min.   :200.0  
 1st Qu.:34.0   1st Qu.:4.0   1st Qu.:355.0  
 Median :45.5   Median :5.0   Median :425.0  
 Mean   :48.4   Mean   :4.8   Mean   :418.9  
 3rd Qu.:56.0   3rd Qu.:6.0   3rd Qu.:499.8  
 Max.   :89.0   Max.   :7.0   Max.   :600.0
#+end_example

I don't think either org or org-babel has any way to automatically wrap
wide tables. Also bear in mind the tranpose function in R (t), although
that's not helpful for this summary output, which is a rather weird
table, not a standard matrix or data frame.

Dan

>
> I appreciate this may be more an Emacs/orgmode question than a babel one.
>
> Graham
>
>
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