This uses the idea of Kahan's summation, if I am not mistaken.
http://en.wikipedia.org/wiki/Kahan_summation_algorithm
Ravi
From: r-devel-boun...@r-project.org [r-devel-boun...@r-project.org] on behalf
of Joshua Ulrich [josh.m.ulr...@gmail.com]
Sent: Frid
I don't believe this is Kahan summation (which I looked at while trying
to track this down). Kahan summation seems to work by attempting to
capture the error in each accumulation to the sum, then adding it back
to the next element before it is accumulated to the sum.
I believe the R algorithm w
On Jul 26, 2013, at 9:59 AM, Bjørn-Helge Mevik wrote:
> Dear developeRs,
>
> I have a package, pls, that implements package options. The users are
> supposed to use a function pls.options() to manipulate them.
>
> If a user changes the options, they are stored in .GlobalEnv. I was
> recently
Dear developeRs,
I have a package, pls, that implements package options. The users are
supposed to use a function pls.options() to manipulate them.
If a user changes the options, they are stored in .GlobalEnv. I was
recently informed that this is against current CRAN submission policies,
so I n
| On 25/07/2013 20:35, Ben Warren wrote:
| > I have been hacking on an R 2.15 build on an Ubuntu 10.4 box, and I do
| > not know how to debug R's error message regarding cairo "working".
Well -- there is a formally supported package so you could just use what I
use in the official Debian /
This was also asked on StackOverflow:
http://stackoverflow.com/q/17866149/271616. Here is the answer I
posted:
This appears to be the updating method of West, 1979 [1] and it was
implemented in R-2.3.0 in response to PR#1228 [2].
I'm not positive this is the correct algorithm, since it was sugge
On 25/07/2013 20:35, Ben Warren wrote:
All-
I have been hacking on an R 2.15 build on an Ubuntu 10.4 box, and I do
not know how to debug R's error message regarding cairo "working".
Configuration completes without the expected additional capability (cairo)
We don't support obsolete ver
I am curious to know what algorithm R's mean function uses. Is there
some reference to the numerical properties of this algorithm?
I found the following C code in summary.c:do_summary():
case REALSXP:
PROTECT(ans = allocVector(REALSXP, 1));
for (i = 0; i < n; i++) s += REAL(x)[i];
s
All-
I have been hacking on an R 2.15 build on an Ubuntu 10.4 box, and I do
not know how to debug R's error message regarding cairo "working".
Configuration completes without the expected additional capability (cairo)
R is now configured for x86_64-unknown-linux-gnu
> Source directory:
