On Sun, 3 Feb 2008, John Fox wrote:
> Dear Brian,
>
> Are there many primitives that take more than one argument?
Quite a few: see the list in the 'R Internals' manual. But most involve
'...' .
> I see, for example, that round() is another. Might it not be a good idea
> to provide a warning in the help file(s) that arguments must be supplied
> in the correct order?
You mean as in
All except 'zapsmall' are primitive, so positional argument
matching is used for the default methods of 'round' and 'signif'.
in 2.6.2 RC?
Brian
>
> Regards,
> John
>
>
>> -----Original Message-----
>> From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
>> project.org] On Behalf Of [EMAIL PROTECTED]
>> Sent: February-02-08 12:45 PM
>> To: [EMAIL PROTECTED]
>> Cc: [EMAIL PROTECTED]
>> Subject: Re: [Rd] argument order for Math2 group functions in R 2.6.x
>> (PR#10683)
>>
>> signif() is primitive in 2.6.x, and so uses positional matching (almost
>> all primitives do).
>>
>> See the NEWS file for the announcement of the change.
>>
>>
>> On Sat, 2 Feb 2008, [EMAIL PROTECTED] wrote:
>>
>>> Full_Name: Ben Hansen
>>> Version: 2.6.1
>>> OS: Windows
>>> Submission from: (NULL) (66.93.3.101)
>>>
>>>
>>> Hi,
>>>
>>> In R 2.6.0 or 2.6.1 on Windows, I get the following upon opening the
>> GUI (no
>>> previous commands or special settings):
>>>> signif(digits=4, x=1/3)
>>> [1] 4
>>>
>>> It seems to be taking 4 to be the "x" argument, the number to be
>> rounded.
>>> However, my understanding (perhaps mistaken) was that it should
>> respond as
>>> follows:
>>>> signif(digits=4, x=1/3)
>>> [1] 0.3333
>>>
>>> (This last is what I get from R 2.5.0 running on the same machine,
>> and what I'm
>>> used to getting using earlier versions.) Similar things happen with
>> round().
>>>
>>> I haven't yet had the opportunity to investigate whether I'd see the
>> same
>>> behavior on other platforms.
>>>
>>> Best wishes,
>>> Ben
>>>
>>> ______________________________________________
>>> R-devel@r-project.org mailing list
>>> https://stat.ethz.ch/mailman/listinfo/r-devel
>>>
>>
>> --
>> Brian D. Ripley, [EMAIL PROTECTED]
>> Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/
>> University of Oxford, Tel: +44 1865 272861 (self)
>> 1 South Parks Road, +44 1865 272866 (PA)
>> Oxford OX1 3TG, UK Fax: +44 1865 272595
>>
>> ______________________________________________
>> R-devel@r-project.org mailing list
>> https://stat.ethz.ch/mailman/listinfo/r-devel
>
--
Brian D. Ripley, [EMAIL PROTECTED]
Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/
University of Oxford, Tel: +44 1865 272861 (self)
1 South Parks Road, +44 1865 272866 (PA)
Oxford OX1 3TG, UK Fax: +44 1865 272595
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