[R] colnames documentation

[R. Michael Weylandt]

Thanks Uwe.

Michael

2012/2/11 Uwe Ligges <ligges at statistik.tu-dortmund.de>:
>
>
> On 10.02.2012 04:53, R. Michael Weylandt wrote:
>>
>> Consider the following in R 2.14.1 (seems to still be the case in Rdevel):
>>
>> x<- matrix(1:9, 3)
>> colnames(x) # NULL as expected
>> colnames(x, do.NULL = TRUE) # NULL -- since we didn't change the default
>> colnames(x, do.NULL = FALSE) # "col1" "col2" "col3"
>>
>> This doesn't really seem to square with the documentation which reads:
>>
>> do.NULL: logical.  Should this create names if they are ‘NULL’?
>>
>> The details section expounds and says:
>>
>> If ‘do.NULL’ is ‘FALSE’, a character vector (of length ‘NROW(x)’
>>      or ‘NCOL(x)’) is returned in any case, prepending ‘prefix’ to
>>      simple numbers, if there are no dimnames or the corresponding
>>      component of the dimnames is ‘NULL’.
>>
>> But I have to admit that I don't really get it. (The interpretation of
>> the docs; I understand the functionality) Could someone enlighten me?
>> Given what the details section says (and the behavior of the function
>> is), I'd expect something more like:
>>
>> do.NULL: logical.  Is NULL an acceptable return value? If FALSE,
>> column names derived from prefix are returned.
>
>
>
> Changed to
>
> \item{do.NULL}{logical. If \code{FALSE} and names are \code{NULL}, names are
> created.}
>
>
>> Michael
>>
>> PS -- In my searching, I think the link to the svn on the developer
>> page (http://developer.r-project.org/) is wrong: clicking it takes one
>> to what appears to be the same page: am I incorrect in assuming it
>> should link to http://svn.r-project.org/R for the current svn?
>
>
>
> I think you followed the link to the svn sources of that developer page
> (rather than the software R).
>
> Uwe
>
>
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