Martin Maechler wrote:
>>"Gregor" == Gregor Gorjanc <[EMAIL PROTECTED]>
>>on Tue, 21 Mar 2006 20:50:21 +0100 writes:
>
>
> Gregor> Martin Maechler wrote:
> >> Hi Gregor,
> >>
> >> before even considering methods for "list" and
> >> "data.frame", can you explain wh
Hi Gregor,
before even considering methods for "list" and "data.frame",
can you explain why you think it is important for levels() to
become a generic function at all?
For me, levels belong to factors (or then to contour plots, or
co-plots ) but exactly because level is a too generic word, it
see
oops, this does not pass R CMD check. I will have to read manuals a bit
more.
...
* checking S3 generic/method consistency ... WARNING
levels:
function(x, ...)
levels.list:
function(x, drop)
levels:
function(x, ...)
levels.data.frame:
function(x, drop)
...
Anyway, I would like to ask wha
Hello!
Does R core find the following pacth usefull - I created methods for
levels for list and data.frame, which can be usefull to get a list of
levels for entries in a list or columns in a data.frame. Patch is
attached and shown bellow example
# Example
> tmp <- list()
> tmp$a <- factor(letters
