On Mon, 18 Jul 2011, Alireza Mahani wrote:
Simon,
Thank you for elaborating on the limitations of R in handling float types. I
think I'm pretty much there with you.
As for the insufficiency of single-precision math (and hence limitations of
GPU), my personal take so far has been that
It would be convenient if, under R-devel r56422, packages that require
re-installation because they do not have a NAMESPACE were marked as
old.packages, so their lack of functionality can be discovered more easily.
snow %in% row.names(old.packages())
[1] FALSE
library(snow)
Error in
Simon Urbanek simon.urba...@r-project.org
on Tue, 28 Jun 2011 11:31:58 -0400 writes:
On Jun 28, 2011, at 9:58 AM, Michelle.Carey wrote:
Hi,
I am trying to write code in C for an R package. I need
high precision in the form of the mpfr and gmp packages.
Prof Brian Ripley rip...@stats.ox.ac.uk wrote in message
news:alpine.lfd.2.02.1107190640280.28...@gannet.stats.ox.ac.uk...
On Mon, 18 Jul 2011, Alireza Mahani wrote:
Simon,
Thank you for elaborating on the limitations of R in handling float
types. I
think I'm pretty much there with you.
Uwe is now a member of R-core.
--
Brian D. Ripley, rip...@stats.ox.ac.uk
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
On Jul 19, 2011, at 7:29 AM, Prof Brian Ripley wrote:
Uwe is now a member of R-core.
Congratulations Uwe!
Regards,
Marc Schwartz
__
R-devel@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-devel
On Jul 19, 2011, at 7:48 AM, Matthew Dowle wrote:
Prof Brian Ripley rip...@stats.ox.ac.uk wrote in message
news:alpine.lfd.2.02.1107190640280.28...@gannet.stats.ox.ac.uk...
On Mon, 18 Jul 2011, Alireza Mahani wrote:
Simon,
Thank you for elaborating on the limitations of R in handling
On 11-07-19 7:48 AM, Matthew Dowle wrote:
Prof Brian Ripleyrip...@stats.ox.ac.uk wrote in message
news:alpine.lfd.2.02.1107190640280.28...@gannet.stats.ox.ac.uk...
On Mon, 18 Jul 2011, Alireza Mahani wrote:
Simon,
Thank you for elaborating on the limitations of R in handling float
types. I
Duncan Murdoch murdoch.dun...@gmail.com wrote in message
news:4e259600.5070...@gmail.com...
On 11-07-19 7:48 AM, Matthew Dowle wrote:
Prof Brian Ripleyrip...@stats.ox.ac.uk wrote in message
news:alpine.lfd.2.02.1107190640280.28...@gannet.stats.ox.ac.uk...
On Mon, 18 Jul 2011, Alireza
On Thu, Jul 14, 2011 at 10:21 AM, Alireza Mahani
alireza.s.mah...@gmail.com wrote:
(I am using a LINUX machine)
Jeff,
In creating reproducible results, I 'partially' answered my question. I have
attached two scripts, 'mvMultiply.r' and 'mvMultiply.cc'. Please copy both
files into your
Further pursuing my curiosity to measure the efficiency of R/C++ interface, I
conducted a simple matrix-vector multiplication test using .C and .Call
functions in R. In each case, I measured the execution time in R, as well as
inside the C++ function. Subtracting the two, I came up with a measure
I just saw that I left a syntax error in the .R and the first
_Rout.txt files. Notice that in the second _Rout.txt file the order
of the arguments in the constructors for the MMatrixXd and the
MVectorXd are in a different order than in the .R and the first
_Rout.txt files. The correct order has
On Jul 19, 2011, at 2:26 AM, Prof Brian Ripley wrote:
On Mon, 18 Jul 2011, Alireza Mahani wrote:
Simon,
Thank you for elaborating on the limitations of R in handling float types. I
think I'm pretty much there with you.
As for the insufficiency of single-precision math (and hence
On Jul 19, 2011, at 11:07 AM, Alireza Mahani wrote:
Further pursuing my curiosity to measure the efficiency of R/C++ interface, I
conducted a simple matrix-vector multiplication test using .C and .Call
functions in R. In each case, I measured the execution time in R, as well as
inside the
Prof. Bates,
It looks like you read my mind! I am working on writing an R package for
high-performance MCMC estimation of a class of Hierarchical Bayesian models
most often used in the field of quantitative marketing. This would
essentially be a parallelized version of Peter Rossi's bayesm
Hi Terry,
You use a NAMESPACE but you don't import Matrix.
So it looks like the rowSums method for CsparseMatrix objects
cannot be found (not sure why because you do have Matrix in the
Depends field so the rowSums generic and methods should be in the
search path).
Anyway, just adding
Yup, that fixes the problem. This was also pointed out by Uwe in a personal
email.
One confusing aspect is that there are two test files in the skeleton
package, one of
which calls rowSums( a dsCMatrix object) at top level, and the other of which
does the
same thing within a dispached
(re-sending after confirming list subscription; apologies if this ends up
being sent to the list twice)
Is the expected behavior from cat(), as used below, a hanging space before
\n at the end of the emitted line?
firstheader = gsub(\\s+$, , paste(c(Hybridization REF, s, s),
collapse = \t))
Hi,
i have a question concerning the Nelder-Mead algorithm in R. As far as i can
see, the shrink operation is not included in the optim() function. Does
anyone know an implementation of the Nelder-Mead algorithm including this
operation in R? Could maybe someone send me one? I would try to write
I am working on a reproducible computing platform for which I would like to
be able to _exactly_ reproduce an R object. However, I am experiencing
unexpected randomness in some calculations. I have a hard time finding out
exactly how it occurs. The code below illustrates the issue.
mylm1 -
Did you actually see some rounding differences?
The lm objects made in the calls to maklm will
differ in the environments attached to the formula
(because you made the formula in the function). If
I change both copies of that .Environment attribute
to .GlobalEnv (or any other environment), then
Take a look at the `nmk' function indfoptim package.
Ravi.
From: r-devel-boun...@r-project.org [r-devel-boun...@r-project.org] on behalf
of Kellner [ralf.kell...@wiso.uni-erlangen.de]
Sent: Tuesday, July 19, 2011 1:33 PM
To: r-devel@r-project.org
Subject:
On Jul 19, 2011, at 10:44 AM, Tim Triche, Jr. wrote:
(re-sending after confirming list subscription; apologies if this ends up
being sent to the list twice)
Is the expected behavior from cat(), as used below, a hanging space before
\n at the end of the emitted line?
firstheader =
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