[Rd] why is \alias{anRpackage} not mandatory?

[Duncan Murdoch]

On 10/6/2008 9:55 AM, hadley wickham wrote:
>>> It may not be much work for you, but I find any additional
>>> requirements to the package format to be a real pain.  I have ~10
>>> packages on CRAN and having to go through and add this extra
>>> information all at once is a big hassle.  R releases tend to happen in
>>> the middle of the US academic semester when I have a lot of other
>>> things on my plate.
>>
>> O.K., but the discussion with Duncan shows:
>>
>> - the required information is already available (in DESCRIPTION),
>> - one can think about ways to generate the page automatically for existing
>> packages,
>> - the intro can be short and should link to other pages or PDFs,
>> - one should avoid doubling and inconsistency.
> 
> I'm obviously not going to object if it's done automatically, and I
> already strive to avoid doubling and inconsistency by producing most
> my documentation algorithmically.  I think you are being cavalier by
> not caring about the extra work you want package authors to do.
> 
>>> Additionally, I find that rdoc is the wrong format for lengthy
>>> explanation and exposition - a pdf is much better - and I think that
>>> the packages already have a abstract: the description field in
>>> DESCRIPTION.
>>
>> o.k., but abstract may be (technically) in the wrong format and does not
>> point to the other relevant parts of the package documentation.
> 
> Then I don't think you should call what you want an abstract.
> 
>>> The main problem with vignettes at the moment is that
>>> they must be sweave, a format which I don't really like.  I wish I
>>> could supply my own pdf + R code file produced using whatever tools I
>>> choose.
>>
>> I like Sweave, and it is also possible to include your own PDFs and R files
>> and then to reference them in anRpackage.Rd.
> 
> Yes, but they're not vignettes - which means they're not listed under
> vignette() and it's yet another place for people to look for
> documentation.

Vignettes have R code in them and a way to extract it, so it's 
misleading to call something that's just a .pdf file a vignette.  But I 
imagine there could be other ways to mix R code with documentation 
besides the existing Sweave formats.  The most obvious way to add 
another one is to write another Sweave driver.  I think it would require 
changes to the base of R to allow for Sweave drivers in packages, 
working with files that don't have extensions (R|r|S|s)(nw|tex), but in 
principle I don't see any real objection to adding that.

Duncan Murdoch