Displaying 20 results from an estimated 60000 matches similar to: "CRAN down?"
2009 Apr 09
3
type.convert (PR#13646)
Full_Name: Stefan Raberger
Version: 2.8.1
OS: Windows XP
Submission from: (NULL) (213.185.163.242)
Hi there,
I recently noticed some strange behaviour of the command "type.convert",
depending on the startup mode used. But there also seems to be different
behaviour on different PCs (all running the same OS and the same version of R).
On PC1:
When I start R in SDI mode (RGui --no-save
2008 Feb 11
2
gcc 4.3 any known issues?
Hi,
Fedora is for Fedora 9 switching to gcc 4.3. Before I test it (rawhide) I want
to be sure that R is running. So my question is whether there have been
issues compiling R + packages using 4.3?
Stefan
2005 Dec 05
4
Broken links on CRAN
Dear List:
When I click on the link to download a reference manual for a package on
cran, I get an error message that the file is damaged and could not be
repaired. I randomly chose various packages and the same error message
appears.
Are the links actually broken? I have also restarted my machine and
closed and re-opened acrobat.
I am using Windows XP, Acrobat Professional 6.0.0.5, and
2005 Nov 14
1
effect sizes for Wilcoxon tests
Hello,
I use t.test for normal distributed and wilcox.test for non-normal
distributed samples.
It is easy to write a function for t.test that calculates the effect
size, because all parts of the formula are available from the t.test
result: r = sqrt(t*t / (t*t + df))
However, for Wilcoxon tests, the formula for effect sizes is:
r = Z / sqrt(N)
I wonder how I can calculate the Z-score in R for
2006 Jan 20
3
abline() or predict.lm() when log="x"
Hello,
I'm trying to plot a fitted lm() line on a plot when the one
explanatory variable is log transformed and log="x". I get different
lines using abline and predict.lm().
#Example
x <- 1:100
y <- rnorm(100)
plot(y ~ x, log="x")
abline(lm(y ~ log(x)))
lines(x, predict(lm(y ~ log(x))), lwd=2)
I'm sure I'm missing something but could someone tell me which
2009 Nov 27
2
using reshape to do ANOVA mixed models
Hi,
I just started with R and I found that there are many options to rearrange
the data to do mixed models.
I want to use the reshape function. I have 2 between subject variables and
one within.
I was able to change the data structure but still - the result of the aov
functions are calculating everything as a within subject.
the table looks like this:
SerialNo breed treatment distance_1
2008 May 05
4
Column renaming
Dear all,
Is there a less cumbersome way to rename a column by name (as opposed
to index) than --
names( X)[ names[ X] == "bob"]<-"sue"
?
A semi-related question: how does one get the index of a column by
name, something along the lines of col.index( X, "sue") ?
Chip Barnaby
---------------------------------------------------------
Chip Barnaby
2008 Oct 01
3
shifting ticks to left or right
Hey list,
Does anybody knows a command to centre the tick mark labels exactly
between the tick points (right shift)?
And then to exclude the last tick label on the right?
I know one can shift them using the 'hadj' option in par. But I am
wondering if there is a more convenient command!
Thanks a lot!!
Stefan
[[alternative HTML version deleted]]
2006 May 29
6
Numerical error in R (win32) (PR#8909)
Hi
I had observed the following problem in R (also C, Matlab, and Python).
sprintf('%1.2g\n', 3.15)
give 3.1 instead of 3.2 whereas an input of 3.75 gives 3.8.
Java's System.out.printf is ok though.
> round(3.75,1)
[1] 3.8
> round(3.15,1)
[1] 3.1
Similar outcome with sprintf in R.
However, the right answer should be 3.2
Regards
Teckpor
[[alternative HTML version
2006 Mar 02
5
Deparsing '...'
Hi,
The following function works, but is there a neater way to write it?
f = function(x,...)
{
# return a character vector of the arguments passed in after 'x'
gsub("
","",unlist(strsplit(deparse(substitute(list(...))),"[(,)]")))[-1]
}
> f(x,a,b,c*d)
[1] "a" "b" "c*d"
>
Thanks.
[[alternative HTML
2008 Mar 26
3
Misc/List Search Path from keyboard (PR#11036)
Full_Name: Richard Reed
Version: 2.6.2
OS: MS Windows XP Pro
Submission from: (NULL) (76.121.170.35)
Pressing Alt-M+s doesn't search path. It just generates another ">". It does
this in "vanilla" too. However, Alt-M+click "list search path" does work. Note
that when I press Alt-M (and the "Misc" menu drops down) the second "s" in
2007 Feb 06
2
when i run ./configure,i meet a problem
i get a message:
configure: WARNING: you cannot build info or html versions of the R manuals
what should i do ?
[[alternative HTML version deleted]]
2008 Dec 22
2
R 2.8.1
R 2.8.1 is packaged up and queued up for testing. Please test this out:
Fedora 9:
https://admin.fedoraproject.org/updates/rpy-1.0.3-6.fc9,R-2.8.1-1.fc9
Fedora 10:
https://admin.fedoraproject.org/updates/rpy-1.0.3-6.fc10,R-2.8.1-1.fc10
Once you've tested it, please, please, go to the update URL above and
click "Add A Comment". If it works for you, click "Works for me" and
2005 Jul 14
2
Calculate of data frame
Hello,
I have a dataframe which I read from a file:
df <- readtable(myFile);
The dataframe has 4 columns: "model", "count", "value" and "date" where
"model" and "date" are made of charactors and "count" and "value" are
numbers. An example is like:
model count value date
A 4 20.8
2009 Nov 23
1
R: Re: chol( neg.def.matrix ) WAS: Re: Choleski and Choleski with pivoting of matrix fails
It works! But Once I have the square root of this matrix, how do I convert it
to a real (not imaginary) matrix which has the same property? Is that
possible?
Best,
Simon
>----Messaggio originale----
>Da: p.dalgaard at biostat.ku.dk
>Data: 21-nov-2009 18.56
>A: "Charles C. Berry"<cberry at tajo.ucsd.edu>
>Cc: "simona.racioppi at
2006 Mar 16
3
sub returns garbage (PR#8687)
Full_Name: Todd Bailey
Version: 2.1
OS: Mac OS-X 10.4.3
Submission from: (NULL) (87.112.79.124)
sub returns garbage in some strings when replacing something with nothing and
fixed=TRUE. For example:
> a=c('hello','hello'); sub('lo','',a,fixed=TRUE)
[1] "hel" "hel\0\0"
> a=c('hello','hello');
2006 Oct 31
4
'make check' fails on d-p-q-r-tests (PR#9326)
'make check' fails on d-p-q-r-tests:
> ##-- non central Chi^2 :
> xB <- c(2000,1e6,1e50,Inf)
> for(df in c(0.1, 1, 10))
+ for(ncp in c(0, 1, 10, 100)) stopifnot(pchisq(xB, df=df, ncp=ncp) == 1)
Error: pchisq(xB, df = df, ncp = ncp) == 1 is not all TRUE
Execution halted
Here is some more testing:
xB <- c(2000,1e6,1e50,Inf)
for(df in c(0.1, 1, 10)) for(ncp in c(0, 1,
2005 Jul 01
5
Generating correlated data from uniform distribution
Dear R users,
I want to generate two random variables (X1, X2) from uniform
distribution (-0.5, 0.5) with a specified correlation coefficient r.
Does anyone know how to do it in R?
Many thanks!
Menghui
2006 Jun 27
2
Mauchly and Levene
Hallo!
I just started working with R to do the statistical analyses for my diploma thesis.
I got two sets of data.
Both contain repeated measures.
One has only one within-subject factor with four levels.
The other has one within-subject factor with two levels and one between-factor with two levels.
I want to compute a Mauchly test for both sets and a Levene test for the second set.
I
2006 Aug 22
5
Authoring a book
Me and some colleagues are planning to write a textbook together
("Statistics using R") where the target audience for the book is
psychologists and students of psychology.
We thought that it might be a good idea to use a Wiki when writing the
text. Is that a good idea? Does anybody have any experience in that
direction? What alternatives are there?
The tool (Wiki) would have to be