Displaying 20 results from an estimated 1000 matches similar to: "Bug in read.table() (PR#1477)"
2003 Aug 15
6
plot.lm mislabels points with na.exclude (PR#3750)
R 1.7.1 on Windows XP
The "normal Q-Q plot" produced by plot.lm() mislabels points
when the model is fitted using na.action=na.exclude. Example:
x <- 1:50
y <- x + rnorm(50)
y[c(5,10,15)] <- NA # insert some NA's
y[40] <- 50 # add an outlier
plot(lm(y ~ x, na.action=na.omit)) # outlier correctly labeled in all
# four plots
2003 Jul 21
2
Bug in file.copy: overwrite=FALSE ignored (PR#3529)
I am using R 1.7.1 on Windows XP Pro.
The 'overwrite=FALSE' argument appears to be ignored in
file.copy():
> file.exists(c("file1.txt", "file2.txt"))
[1] TRUE TRUE
> file.copy(from="file2.txt", to="file1.txt", overwrite=FALSE)
[1] TRUE
>
and sure enough, file1.txt has been overwritten.
Rich Raubertas
Biometrics Research, RY33-300
Merck
2013 Jun 27
1
'modifyList' drops (not adds) NULL components
Dear list,
Utils::modifyList() drops NULL components in its second argument, instead of adding them to the first argument. Compare:
> modifyList(x=list(A=1), val=list(B=2, C=3))
$A
[1] 1
$B
[1] 2
$C
[1] 3
> modifyList(x=list(A=1), val=list(B=NULL, C=3))
$A
[1] 1
$C
[1] 3
To me this seems inconsistent with the documentation ("Elements in 'val' which are missing from
2005 May 02
14
eigenvalues of a circulant matrix
Hi,
It is my understanding that the eigenvectors of a circulant matrix are given as
follows:
1,omega,omega^2,....,omega^{p-1}
where the matrix has dimension given by p x p and omega is one of p complex
roots of unity. (See Bellman for an excellent discussion on this).
The matrix created by the attached row and obtained using the following
commands
indicates no imaginary parts for the
2003 Jan 13
2
Bug in boxplot(..., add=TRUE) ?
R 1.6.1 on Windows NT4:
The boxplot() function appears to draw its own tick marks
and axis values even when called with add=TRUE. As a toy
example, try
x <- rnorm(100)
f <- factor(rep(1:4, each=25))
plot(c(0,4), c(-3,3), type="n", xaxt="n", yaxt="n")
boxplot(x ~ f, add=TRUE)
My expectation is that a high-level plotting function will
not mess with the axes
2007 Aug 03
4
DO NOT REPLY [Bug 4855] New: skipped local filters cause segfault while deleting (-rFR --delete)
https://bugzilla.samba.org/show_bug.cgi?id=4855
Summary: skipped local filters cause segfault while deleting (-
rFR --delete)
Product: rsync
Version: 3.0.0
Platform: x86
OS/Version: Linux
Status: NEW
Severity: normal
Priority: P3
Component: core
AssignedTo: wayned@samba.org
2004 Mar 21
5
PRI issues with TE410P
Hi,
I am having some problems mentioned below, the box is in production live
environment with traffic around 30 - 100 calls.
I am running T/E410P in a Dual P4 xeon with HT disabled. I am using
zaptel 0.9.0 and asterisk stable 1 release. There is no gui, just mysql,
perl (small script) and asterisk.
System runs very smoothly if the calls are around 40-50 and comes one by
one , however sometimes
2018 Sep 11
1
var() with 0-length vector -- docs inconsistent with result
R 3.5.1 on Windows 7
The documentation for 'var' says: "These functions return 'NA' when there is only one observation (whereas S-PLUS has been returning 'NaN'), and fail if 'x' has length zero." The function 'sd' (based on 'var') has similar documentation.
However, I get:
var(numeric(0))
[1] NA
rather than an error.
Personally I
2004 Aug 25
5
Adding labels to variables
Hi,
Is it possible to add labels to variables in R (so as to have a better
description of what the variables represent)?
Thanks,
Neil
2004 Apr 27
3
R hang-up using lm
Dear R-helpers,
I have found a slightly annoying problem when trying to
plot lines on graphs. I first created my data using
tapply, thus:-
y1=as.vector(fit1$coef$random$id)
x1=tapply(o1,id,median,na.rm=T)
x2=tapply(o2,id,median,na.rm=T)
#then I plot the data, thus:-
plot(x1[x2==0],y[x2==0])
#if I now try to fit the linear regression, R 'hangs up'
2005 Mar 24
3
client-server setup for R
I am currently the only use-R at my company, but they are considering
buy a more powerful server and letting multiple people use it. They
asked me if R supports client-server setups. I know S+ has a server
version that does that. I didn't find anything about that on CRAN,
but hopefully someone can correct me.
I did see some stuff about R web servers
2005 Jun 14
3
Calling C from Fortran
I would like to call C routines from Fortran under linux as suggested in
section 5.6 of
the "Writing R extensions" documentation.
I'm familiar with Fortran but not with C.
I understand the example provided in Fortran:
subroutine testit()
double precision normrnd, x
call rndstart()
x = normrnd()
call dblepr("X was", 5, x, 1)
call rndend()
end
but I don't understand
2003 Mar 07
5
Moving average
Hi,
Does anyone know if R has the functionality to calculate a simple moving
average. I cant seem
to find it in the help menu.
thanks,
Wayne
Dr Wayne R. Jones
Statistician / Research Analyst
KSS Group plc
St James''s Buildings
79 Oxford Street
Manchester M1 6SS
Tel: +44(0)161 609 4084
Mob: +44(0)7810 523 713
KSS Ltd
A division of Knowledge Support Systems Group plc
Seventh
2005 Apr 27
4
Defining binary indexing operators
Assume we have a function like:
foo <- function(x, y)
how is it possible to define a binary indexing operator, denoted by $, so
that
x$y
functions the same as
foo(x, y)
2008 Dec 08
1
French IRC channel and mailing list ?
Dear all,
For some time now, R is becomming more and more popular in more and
more countries. France is for sure one of them, but french people
being french one of the obstacle they might tackle is the lack of
documentation and support in their native language.
To offer this support in french an IRC channel (#Rfr on
irc.freenode.net) was created some months ago, beside the official
english
2005 Jul 28
3
using integrate with optimize nested in the integration
Hi guys
im having a problem getting R to numerically integrate for some function,
say f(bhat)*optimize(G(bhat)), over bhat. Where id like to integrate this over some finite range, so that here as we integrate over bhat optimize would return a different optimum.
For instance consider this simple example for which I cannot get R to return the desired result:
f <- function(bhat) exp(bhat)
g
2005 Jun 02
2
dotcode typo? (PR#7917)
Duncan Murdoch wrote:
> Huntsinger, Reid wrote:
>
>>Sorry, I was looking at 2.0.1 when I meant to be looking at 2.1.0. The line
>>numbers for the latter are 161-179 and line 164 is the one with what I think
>>is a typo.
>>
>>Reid Huntsinger
>>
>>-----Original Message-----
>>From: r-devel-bounces@stat.math.ethz.ch
2005 Jun 15
2
need help on computing double summation
Dear helpers in this forum,
This is a clarified version of my previous
questions in this forum. I really need your generous
help on this issue.
> Suppose I have the following data set:
>
> id x y
> 023 1 2
> 023 2 5
> 023 4 6
> 023 5 7
> 412 2 5
> 412 3 4
> 412 4 6
> 412 7 9
> 220 5 7
> 220 4 8
> 220 9 8
> ......
>
Now I want to compute the
2004 Dec 08
2
memory problem
Hi,
I am trying to run a very computationally expensive procedure in
R-2.0.0. and the process always gets killed after approx 8 minutes. This
procedure calls some of my own C++ code - in case it was this code
causing a memory leak I unload and then reload the .so file every time,
however I still get the same problem. The procedure is run 16000 times
and always calls the lm() function. My
2005 May 05
2
Precision in R
Could anyone help me with the following issue.
Using the GSL library in R I define the following code:
#########
library(gsl);
S<-function(n)
{ r<-0:n;
ans<-sum(gsl_sf_choose(n,r)*(-1)^r*2^(2*r)*gamma_inc(6-2*r,2))
ans }
#########
>SS(10) yields 34.91868
>SS(40) yields 5.340422
>SS(60) yields 180.3162
Doing the same computations in maple I get