Displaying 20 results from an estimated 10000 matches similar to: "a bug?"
2002 Oct 11
2
No subject
Subject: activity of CPU used by R
X-Mailer: VM 7.00 under 21.4 (patch 6) "Common Lisp" XEmacs Lucid
Reply-To: fjmolina at lbl.gov
FCC: ~/mail/sent
My R processes never use more than 50% of my CPU activity. Is there any way I can make
them use more of it?
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2002 Jul 09
2
C++ and R
I am calling C++ from R.
I want C++ to return a vector whose length is not known when the C++
routine is called.
Is it possible to do this without using R objects in the C++ routine?
So far I have been using .C, but I do not see how I could use it in this
case.
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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
2002 Dec 30
2
Writing packages with `methods' package
I'm trying to write a package which uses classes/methods as defined in the
`methods' package. I have a single .R file which defines the class and
various methods for that class. At the top of the file I have
require(methods)
and then
setClass("myclass", ...)
setGeneric("intersect")
setMethod("intersect", "myclass", function(x,y) ...)
I noticed
2003 Jan 15
2
Contour Plots
r-help,
I can't seem to get the below data organized in such a manner so as to
generate a contour plot
using any of the functions {lattice.contourplot, base.contour,
base.filled.contour}. I was wondering
if anyone could please tell me what I need to do to accomplish this.
X,Y,Level
-31.105,86.911,3843
-3.385,86.911,3896
24.335,86.911,3874
-24.175,79.700,3900
-3.385,79.700,3927
2003 Feb 11
2
geoR question from new R user
Hi,
I'm a new R user. My goal is to do a variogram using geoR.
I started by trying to do the example in the geoR Illustrative Session
using my own data.
I am able to read in my Ascii data using: D <- matrix(scan("file.dat",
n=530*3), 530,3, byrow=TRUE).
Then I use: as.geodata(D, coords.col=1:2, data.col=3) to make the
object D geodata.
I check the descriptive statistics,
2003 Jul 22
3
R and C++ compared with only C++
My computer is a pentium 4 running at 2.4 GHz.
My R is 1.7.1
I have written a program in R that calls C++. The program spends most of the
time in C++ ( > 90% ). R basically deals with output and input.
How slower can this be compared with the program I would get from rewriting
everything in C++?
Thank you.
2002 Feb 19
2
cdf of the standard normal distribution
Dear Experts,
I need to calculate the cdf of the standard normal distribution, i.e.
H(x) = 1/sqrt(2*pi) integral(exp(-z^2/2) dz), where z is b/w -infi to
infi.
I know there should be a way to do it in R, but did not know to do it.
I'd appreciate any help you could offer.
Charlie Liu
Graduate student intern at EPA/ECO
2002 Mar 11
2
gif, jpeg and png image files reader
Hi all,
Although R seems to have jpeg() and png() functions that converts data into
jpeg and png formated files, it
doesn't have functions the other way around.
Does one of R contributed packages have gif, jpeg and png image readers? I
did help.search() but no luck
Regards,
Jonathan
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r-help mailing list -- Read
2003 Jan 16
7
X11 device now needs to be explicitly started?
_
platform i686-pc-linux-gnu
arch i686
os linux-gnu
system i686, linux-gnu
status
major 1
minor 6.2
year 2003
month 01
day 10
language R
>
Until this version, I've not had to explicitly start the x11 device.
Now,
2003 Apr 22
7
Subject: Eliminate repeated components from a vector
X-Mailer: VM 7.00 under 21.4 (patch 6) "Common Lisp" XEmacs Lucid
Reply-To: fjmolina at lbl.gov
FCC: /home/f/.xemacs/mail/sent
Does anyone know how I can eliminate repeated elements from a vector?
2002 Aug 31
1
building r-devel on RedHat 7.1 with gcc 3.1.1
Has anyone tried to build r-devel on a RedHat 7.1 with the gcc 3.1.1
compiler? I didn't have problems with gcc 2.95.x or gcc 3.0.4, but when I
ran the configure with gcc 3.1.1 I got the following error:
[...]
checking whether gcc accepts -M for generating dependencies... yes
checking whether gcc supports -c -o FILE.lo... yes
checking how to get verbose linking output from g77... -v
checking
2002 Nov 15
3
shared ATLAS library?
>From "R Installation and Administration:"
Note that the BLAS library will be used for several add-on packages as
well as for R itself. This means that it is better to use a
shared BLAS library, as most of a static library will be compiled
into the R executable and each BLAS-using package.
Is there an idiots guide on how to do this (or should idiots just not try).
2002 Mar 17
5
compute variance of every column in a matrix without a loop
Is it possible to compute the variance of every column in a matrix
without a loop?
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2002 Aug 28
2
sourcing a file with the plot.lme() function
I ran into a problem trying to make a plot from a file that's read using
source. Basically, I have the following code in a file "plot.R" :
library(nlme)
data(Loblolly)
fm1 <- nlme(height ~ SSasymp(age, Asym, R0, lrc),
data = Loblolly,
fixed = Asym + R0 + lrc ~ 1,
random = Asym ~ 1,
start = c(Asym = 103, R0 = -8.5, lrc = -3.3))
2003 Jan 30
1
vector passed to `if' in `pgamma'
In the current R-devel sources, the `pgamma' function gives a warning when
the `shape' argument is passed as a vector of length > 1. That is,
> pgamma(3, 1)
[1] 0.950213
> pgamma(3, c(1, 2))
[1] 0.9502129 0.8008517
Warning message:
the condition has length > 1 and only the first element will be used in:
if (shape <= 0) stop("shape must be strictly positive")
2002 Jun 22
1
Does matmult exist?
Does the function 'matmult' still exist in R? It has a help page and is
referenced in the help page for 'kronecker', but I can't seem to access
the function itself. Obviously, not an issue of great concern but just a
curiosity.
> version
_
platform i386-pc-mingw32
arch i386
os mingw32
system i386, mingw32
status
2003 Mar 17
4
X11 connection error in web cgi mode only
Dear all,
I am trying to create a web interface using Perl-CGI to call R plots and
to display them.
The following codes works perfectly fine when I copy and paste into the
console directly or if I save it into script.file and then R --no-save <
script.file producing the graphs.
jpeg("graph.jpeg", width=400, height=400)
plot(rnorm(100))
dev.off()
Now, I put the line system("R
2003 May 01
4
List of lists? Data frames? (Or other data structures?)
Hi, I'm faced with the following problem and would appreciate some
advice.
I could have a data frame x that looks like this:
aa bb
a 1 "A"
b 2 "B"
The advantage of this is that I could access all the individual
components easily. Also I could access all the rows and columns
easily.
Alternatively, I could have a list of
2002 Nov 19
4
fast way to check an object is a member of a list?
Is there any fast way to check that an object is a member of a list?
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r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html
Send "info", "help", or "[un]subscribe"
(in the "body", not the subject !) To: r-help-request at stat.math.ethz.ch