Displaying 20 results from an estimated 20000 matches similar to: "(Off topic) Limit question solved."
2003 Feb 03
0
(Off topic.) Game theory.
This has nothing to do with R as such; I'm simply trying to exploit
the vast resource of knowledge and expertise that resides in the R
community.
For my sins, I am teaching a course on Game Theory this term. Game
Theory I know from ***nothing***. I am trying to learn the subject
as I go along, staying perhaps half a step in front of the students.
I am having considerable difficulty with
2005 Jan 19
0
Off topic -- when is max min = min max?
This question has little or nothing to do with R; as usual I'm simply
hoping to take advantage of the great depth of knowledge and
expertise in the R community.
Anyone who is interested in replying should send email directly to me
(rolf at math.unb.ca) and not to this list.
To get to my question: In a two person zero-sum game, the
value of the game to the row player is
v_r = max min
2004 Mar 26
1
(Off topic) Text on General Linear Model.
A student (at another university) has contacted me for advice about a
good text dealing with the general linear model (which she needs to
know about for her thesis defense).
[One might say that if she used the GLM in her thesis she ***ought***
to know about the concept already, but ought to and does are very
different, so ne'er mind.]
The lady is an engineering student so I guess she'd
2006 May 17
3
Off topic --- help in locating a source.
Apologies for the off-topic question; as usual I'm trying to draw
upon the unparalleled knowledge and sagacity of the r-help list.
Please reply off-list if you can help me out.
A collaborator of mine found a formula we need, on sheets which he had
photocopied out of a book, some years ago. He cannot remember which
book (he's getting to be as senile and forgetful as I am, poor
bloke!).
2004 Sep 15
2
Slightly off-topic --- distribution name.
I've built R functions to ``effect'' a particular distribution, and
would like to find out if that distribution is already ``known'' by
an existing name. (I.e. suppose it were called the ``Melvin''
distribution --- I've built dmelvin, pmelvin, qmelvin, and rmelvin as
it were, but I need a real name to substitute for melvin.)
The distribution is really just a toy
2004 Oct 25
1
Scoping and nls.
A colleague of mine is trying to use nls() to effect an optimization,
and is encountering a scoping problem. I should know how to solve it
for him but .... well, I just don't.
I also had a quick scrounge of the archives --- I know I've seen this
topic addressed before --- but I couldn't track it down.
So here's a toy example that demonstrates the problem:
hhh <-
2007 Apr 24
1
regarding 3d Bar Plot --- correction.
I mis-spoke. It seems I had two collections of functions in the same
directory. One by Colin Goodall, and one by David Scott (I have no
record of where he is/was located). It is the *latter* collection
that does all its work from within Fortran.
I'll have another look at what Colin Goodall actually wrote to see if
it could be useful to guarav.
cheers,
Rolf Turner
rolf at
2002 Apr 04
1
PR#1132.
Just now I again had occasion to want nested describe lists in a
documentation file. I found that the bug which I reported on 18
October, 2001 still persists. I checked on the bug report at the R
web page, and found that the notes say ``Not a problem in R 1.4.0
(2001-12-08)''.
Well, it's still a problem for me --- using R 1.4.1.
(Details:
platform sparc-sun-solaris2.7
arch
2003 Nov 15
0
FW: computing a p-value ...
Thanks to Rolph Turner and Jason Turner ...
I guess I was too excited about getting back on the list after an absense of
several years ... I'll be a little more thoughtful about the problem before
posting next time, and a little less trigger-happy with the "Send" e-mail
button.
Never-the-less, much appreciated.
- Mohamed
-----Original Message-----
From: Rolf Turner
2003 Sep 22
1
Updating a linear model
My google search for Plackett's Algorithm didn't return too much except that
Plackett's algorithm appears to be useful in Control Theory - it is
elaborated as "Plackett's algorithm for on-line recursive least squares
estimation". Sounds something like what I want.
I am looking at developing a user modelling type app (new data points coming
in and wanting to dynamically
2002 Jun 26
0
Tenure track statistics position at UNB.
The Department of Mathematics and Statistics at the University of New
Brunswick, Fredericton, N. B., Canada, is advertizing a tenure track
position in Statistics, starting 1 July 2003. Please see
http://www.math.unb.ca/job-stat.html
for details.
cheers,
Rolf Turner
rolf at math.unb
[My apologies to those who receive multiple copies of this email.]
2004 May 25
0
(OT) Fourier coefficients.
This posting has nothing to do with R (except maybe that I am using R
very heavily in writing the paper to which the question pertains.) I
simply wish to draw upon the impressive knowledge and wisdom of the R
community.
Since this question is way off topic, if anybody has the urge to
reply, they should probably email me directly:
rolf at math.unb.ca
rather than via this list.
My question
2011 Nov 03
2
Problem with R CMD check and the inconsolata font business.
I have just installed R version 2.14.0 and tried to re-build and
re-check some
of the packages that I maintain.
I'm getting a warning (in the process of running R CMD check on my "deldir"
package):
> * checking PDF version of manual ... WARNING
> LaTeX errors when creating PDF version.
> This typically indicates Rd problems.
> LaTeX errors found:
> ! Font
2006 May 29
2
newbie question: ROW average
Dimitris Rizopoulos wrote:
> look at ?rowMeans; you can also use "apply(mat, 1, mean)" but
> rowMeans() is better.
By my reading of the question, this is not what
Ezhil wants. He said:
``I have a 992 x 74 matrix. I would like to form a new matrix
by averaging each 4 rows from the original one.''
I.e. he wants (I think) the first row of the new matrix
to be the
A log on Bayesian statistics, stochastic cost frontier, montecarl o markov chains, bayesian P-values
2004 Feb 17
0
A log on Bayesian statistics, stochastic cost frontier, montecarl o markov chains, bayesian P-values
Dear friends,
Over the past weeks, I have been asking a lot of questions about how to
use R in Bayesian analysis. I am brand new to R, but I am very pleased with
it. I started with winbugs but I found winbugs to be a limited software, not
bad but has several limitations. By contrast, R allows the analyst to tackle
any problem with a huge set of tools for any kind of analysis. I love R. In
2001 Sep 07
0
Off-line help.
For some reason, off-line help seems no longer to be working
in R for me.
I.e. if I do, e.g.,
> help(plot,offline=T)
***nothing*** happens. Previously, (before I re-installed R to
get command-line editing working, I think) if did this, a file
called ``plot.ps'' was created in the current working directory,
and I could happily lpr this file. Now .... nadda.
I have a ***vague***
2007 Feb 19
1
Documenting options specific to a package.
If one specifies new options in a package, using the options()
function, where does/should one document these new options?
E.g. suppose that I put the line
options(melvin=42)
in a file zzz.R in the R directory of the package source, where the
package contains functions foo(), bar(), clyde(), and irving() which
all query options("melvin") and take some action based on the value
of
2006 Apr 27
1
Symbol __f95_sign not found.
Our computing services people have recently reconfigured the Sun
compilers structure on our network, and I can no longer install, on
our Sun/Solaris machine, a certain package (spatstat) with which I am
heavily involved. (The same problem may well pertain to other
packages as well; I haven't yet experimented except with spatstat.)
Strictly speaking I can ***install*** it, but when I try
to
2003 May 11
1
Prime or dash in plotmath().
I've had to struggle a bit to get the prime/dash derivative notation
into a plotmath expression. The use of
expression(K'(t))
gives me a syntax error. The best I've been able to come up with is
expression(paste(K,"'",(t),sep=""))
Is this the ``accepted'' procedure, or is there a more direct route?
cheers,
Rolf Turner
rolf at
2003 Mar 17
2
Trying to build R-1.6.2 under sparc-sun-solaris2.9.
This is a follow-up to a message I posted yesterday concerning
building R-1.6.2.
After a deafening silence regarding that first message I decided
to be fool-hardy and just comment out the line that seemed to
be giving trouble in the file /usr/include/sys/stream.h.
This worked for a while, but soon another error resulted: