[R] Long command in Sweave

[Wincent]

Thanks, Gavin and Duncan.

In that case, what I need is a suitable editor which can break the
command properly.

All the best

On 13 April 2012 19:33, Gavin Simpson <gavin.simpson at ucl.ac.uk> wrote:
> On Fri, 2012-04-13 at 17:46 +0800, Wincent wrote:
>> Dear useRs,
>>
>> I am writing a vignette for a package, which contains long command like this,
>> >reduce(Lipset_cs,"SURVIVAL",c("GNPCAP", "URBANIZA", "LITERACY", "INDLAB", "GOVSTAB"),explain="positive",remainder="exclude",case="CASEID")
>> It is longer than the width a page and part of it will become "missing".
>> Currently, I have to manually break the command into multiple lines.
>> Is there a better way to handle such issue?
>
> Not that I am aware of.
>
>> It seems that others have raised similar question which seems to
>> remain unsolved in a satisfactory fashion.
>>
>> Thanks for your kind attention in advance.
>>
>
> 1) use some spacing and format the code over multiple lines
>
> reduce(Lipset_cs, "SURVIVAL",
>       c("GNPCAP", "URBANIZA", "LITERACY", "INDLAB", "GOVSTAB"),
>       explain="positive", remainder="exclude", case="CASEID")
>
> Isn't that more readable?! Any good R-aware editor should be able to
> handle appropriate formatting of the code. I *never* write long lines in
> my editor; I always break the code down to fit roughly into a 72 column
> editor window.
>
> 2) if you want to force Sweave to respect your new formatting, use
> argument `keep.source=TRUE` for the code chunk. Or set it document wide
> using \SweaveOpts{option1=value1, option2=value2} etc in the preamble
> (where optionX is one of the arguments and valueX what you want to set
> that argument too.
>
> Thought IIRC, `keep.source=TRUE` is the default now and as such Sweave
> will respect your formatting by default now - before it broke lines
> where it could.
>
> In short get out of the habit of writing long lines of R code; you'll be
> better in the long run laying your code out logically.
>
> HTH
>
> G
>
> --
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>
>



-- 
Wincent Ronggui HUANG
Sociology Department of Fudan University
PhD of City University of Hong Kong
http://homepage.fudan.edu.cn/rghuang/cv/