If this message is garbled for anyone else, the original question on
stackoverflow is here:
http://stackoverflow.com/questions/5841339/using-notation-for-reference-class-methods
Hadley
On Sat, Apr 30, 2011 at 11:35 AM, Chad Goymer wrote:
>
> I've been trying to use methods for reference classes
Hi!
In R 2.14.0dev (R version 2.14.0 Under development (unstable)
(2011-04-29 r55692), Windows release
(http://cran.r-project.org/bin/windows/base/rdevel.html), the line :
options(width=55)
in code chunk of an Rnw file has no effect on sweave's output text file.
The same thing in 2.13.0 wor
Feel free to contact me.
Thanks,
Venkat
From: Martin Maechler [maech...@stat.math.ethz.ch]
Sent: Saturday, April 30, 2011 5:05 PM
To: Seshan, Venkatraman E./Epidemiology-Biostatistics
Cc: r-devel@r-project.org
Subject: Re: [Rd] Kendall's tau code
> "
> "S" == SeshanV
> on Sat, 30 Apr 2011 11:20:59 -0400 writes:
> I discovered that the Kendall's tau calculation in R uses
> all pairwise comparisons which is O(n^2) and takes a long time for
> large vectors. I implemented a O(n*log(n)) algorithm based on
> merge-sort.
I've been trying to use methods for reference classes via the notation
"[[...]]" (X[["doSomething"]] rather than X$doSomething), but it failed to
work. However, I did find that if you use the usual "$" notation first,
"[[...]]" can be used afterwards. The following simple example illustrates th
I discovered that the Kendall's tau calculation in R uses all pairwise
comparisons which is O(n^2) and takes a long time for large vectors. I
implemented a O(n*log(n)) algorithm based on merge-sort. Is this of interest to
be included in core R? The code (fortran and R wrapper) is available in m
I also favor deprecating mean.data.frame.
One possible exception would be for a single-column data frame.
But even here I'd say no, lest people expect the same behavior for
median, var, ...
Pat's suggestion of using stop() would work nicely for mean.
(but omit paste - stop handles that).
Tim Hes
