Note that on Windows only packages in the same library are checked for
links, as on Windows the HTML help cannot link across libraries. (This is
done under Unix via symbolic links.)
By default check installs in a private library, so you may well see
(correct) reports of missing links under
Hi,
I keep getting this error code when I try to run an R file that reads in
data from another file. I know the file is there.
source(C:/R_Data/typhoon.r)
Error in file(file, r) : unable to open connection
In addition: Warning message:
cannot open file `typhoon.txt'
I hope you can help.
On Mon, 8 Mar 2004, Duncan Murdoch wrote:
On Mon, 8 Mar 2004 18:20:29 -0500 (EST), you wrote:
In trying to figure out how these things are determiend, I noticed that in
Windows there was a difference in the reported missing links when one does
'Rcmd check' vs 'Rcmd install' (or 'Rcmd
Hi,
-Original Message-
WEKA includes a re-implementation of the ideas behind C4.5,
but not C4.5.
If my memory serves me right, WEKA people called this
re-implementation J4.8.
Kevin
Ko-Kang Kevin Wang, MSc(Hon)
Statistics Workshops
1/(B+1) is the significance level of the Monte Carlo test if the data
give the most extreme value. (E.g. Ripley, 1987, p. 171.) This is a
calculation, not a convention, and assumes a continuously distributed
statistic.
On Mon, 8 Mar 2004, Spencer Graves wrote:
What is the standard
If you have missing data in your data frame and want residuals for all
observations, you need to use na.action=na.exclude, not the default
na.omit.
As for lag, its description says
Description:
Compute a lagged version of a time series, shifting the time base
back by a given number
Dear all,
suppose I have a bi-variate function f(x,y), I want to find the maxima. I
define x and y vector, and get matrix z=f(x,y). how can I get which (x0,y0)
makes z become the maxima?
I can do two loops to get the x0 and y0, but I think there may exist a
function to do this.
Hi!
I am using R 1.8.1 and the svm of the e1071 package for classification.
The problem is that I have unbalanced classes e.g. the first one is much bigger than
the second one and therfore the svm is biased to the first class.
If I manually adjust the class size the bias disappears.
The question
Make sure you either use full path to `typhoon.txt' as you did with
`typhoon.r', or setwd() to the directory where `typhoon.txt' lives before
reading it.
[Please use an informative subject for your message.]
Andy
From: Andrew Abel
Hi,
I keep getting this error code when I try to run an R
May be you aren't on the right working dir:
getwd(),setwd().
Your R-script are able to find the thyphoon.txt path?
Best!
A.S.
Alessandro Semeria
Models and Simulations Laboratory
Montecatini Environmental Research Center (Edison Group),
Via Ciro Menotti 48,
Hi,
SVM have got the option class.weights to put the
apriori-distribution for your target variable.
To oversample, or undersample a specific class
you have imho write a own function!?
Perhaps it helps ,christian
Am Dienstag, 9. März 2004 11:29 schrieb Frank Gerrit Zoellner:
Hi!
I am
On Tue, 9 Mar 2004 08:03:44 + (GMT), you wrote:
No, both will find links in the same library as installing into (plus
those which are fixed up on installation, e.g. to the base package).
Several of us have looked for years for a fix, and this is the best scheme
we have come up with. You
Dear Sir:
I am interesting in to use some R functions in some of our developments. But I have a
problem which I have not found information in R documentation, for that I ask for help.
Can I to call R functions from a C (or another language) program ?. ANd if the answer
if yes, could you help
Dear R users,
I have changed my R version to the new 1.8.1 and some problems appears when
using the previous levelplot code.
This is a simple example:
a -1:10
b -11:20
j - rnorm(100)
grid-expand.grid(a = a, b = b)
levelplot(j~a*b, grid)
Normaly in my previous vs this was suffice to produce
I am sending this reply on behalf of Erik (who is not a member of this
list).
- Lennart
-Original Message-
From: Källen, Erik
Sent: 9 mars 2004 11:37
To: Borgman, Lennart
Subject: RE: [R] error() and C++ destructors
I would do something like:
class error_exception {
public:
Hola,
Yes you can call R from C and viceversa, you should read the manual
Writing R extensions:
available in the section manuals from the r-project website
http://cran.r-project.org/doc/manuals/R-exts.pdf
Suerte,
Angel
Miguel Ángel Gómez-Nieto wrote:
Dear Sir:
I am interesting in to use some R
And maybe I stressed Erik a bit, because he corrected himself some minutes
later (when I was no longer looking over his shoulder). Again on behalf of
Erik.
- Lennart
-Original Message-
From: Källen, Erik
Sent: 9 mars 2004 13:40
To: Borgman, Lennart
Subject: RE: [R] error() and C++
On Tue, Mar 09, 2004 at 12:38:33PM +, Prof Brian Ripley wrote:
On Tue, 9 Mar 2004, Duncan Murdoch wrote:
On Tue, 9 Mar 2004 08:03:44 + (GMT), you wrote:
No, both will find links in the same library as installing into (plus
those which are fixed up on installation, e.g. to the
How many chips you can read is a function of how much RAM you have and
what chip it is. On a unix/linux box you will be able to read in and
process 143 of the HG-u95aV2 chips if you have about 2 Gb RAM. For the
larger U133A chips (RAE/MOE are about the same size), you will probably
need almost
You might consider using the `weight' argument of svm().
Best,
David.
Hi!
I am using R 1.8.1 and the svm of the e1071 package for classification.
The problem is that I have unbalanced classes e.g. the first one is much
bigger than the second one and therfore the svm is biased to the first
Hernan == Hernan Dopazo [EMAIL PROTECTED]
on Tue, 9 Mar 2004 12:46:51 +0100 writes:
Hernan Dear R users,
Hernan I have changed my R version to the new 1.8.1 and some problems appears
when
Hernan using the previous levelplot code.
Hernan This is a simple example:
after
On Tuesday 09 March 2004 05:46, Hernan Dopazo wrote:
Dear R users,
I have changed my R version to the new 1.8.1 and some problems appears
when using the previous levelplot code.
This is a simple example:
a -1:10
b -11:20
j - rnorm(100)
grid-expand.grid(a = a, b = b)
levelplot(j~a*b,
Hello, here is my problem,
After looking at the mail archives, I found a
description of the error I get when I use this
package.
At first I even tought that they were showing how to solve it.
But the thing is that by saying the programmer
forgot drop=FALSE doesn't show me how I should
get
Hi all,
I am a biostatistician and I have developed my own
ranking system for clinical data. I would like to test
the efficiency of it w.r.t. to other ranking systems.
I would like to simulate the data and after assigning
ranks to my observed scores(after neglecting
dropouts), observe the type I
hello,
could somebody refer me to the reason R uses
-2*loglik + 2*(#param)+2
to calculate AIC?
thank you
--
Stoyan Iliev
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https://www.stat.math.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide!
Greetings,
I have the following problem:
I want to compare a parameter trajectory, i.e. a series of real
numbers (representing equidistant samples of a time-varying parameter)
produced by some model, to a reference trajectory, measured from the
real world, in order to get a rating of how good
Hi, everyone,
There is many small cells which can be classified into several big cells
from the scanned image. K-means clustering does not work well in this
condition. I have done hierarchical clustering on cells successfully which
uses shortest distance between classes. The number of clusters
AIC is calculated in many places in R, but I do not believe any use that
formula.
Here is a guess as to your confusion: in linear models there are p
coefficients plus sigma^2 to be estimated and hence there is often an
extra 2 associated with the scale parameter. For example, in
R calculates
AIC = -2*loglik + 2*(#param)
but you probably missed the variance parameter when counting the parameters.
Jens Schumacher
--
Dr. Jens Schumacher
Max-Planck-Institut f. Biogeochemie
Winzerlaer Str. 10
D-07745 Jena
Germany
Tel: +49
Hi all
I am very astonished that R generates a syntax error when I want to
split up a line with a backslash, which usually works in any shell script.
R itself generates the + symbols at the beginning of following lines
in a splitted line so I've tried with them as well, but also without
That quantity is called the Akaike Information Criterion. It
dates back to original work of Akaike. For more recent discussions and
citations to earlier literature see, e.g.:
Brian Ripley (1996) Pattern Recognition and Neural Networks
(Cambridge U. Pr.)
Burnham and Anderson
David Andel [EMAIL PROTECTED] writes:
I am very astonished that R generates a syntax error when I want to
split up a line with a backslash, which usually works in any shell
script.
One way to diminish the astonishment factor when using software is to
try reading the documentation. :-)
The
On Tue, 9 Mar 2004 12:38:33 + (GMT), Prof Brian Ripley
[EMAIL PROTECTED] wrote :
On Tue, 9 Mar 2004, Duncan Murdoch wrote:
Here's a proposal:
All of check and build and install should default to the same library
location. Check and build aren't meant to be permanent installs, so
if the
Hi,
I am trying to calculate mahalanobis distances for a matrix x with
n*p variables. I am getting the following error:
md2 - mahalanobis(x, center, cov)
Error in solve.default(cov, tol = tol.inv) :
system is computationally singular: reciprocal condition
number = 2.11165e-009
What
Hi all,
When I start R, it gives
mkdir: Ne peut créer le répertoire `/home/mart/tmp/Rtmp11729'.: No such file or directory
(I specify that my home path is /home/mart and the R version is 1.7.1)
How I have to configure R to use the directory /tmp instead of
/home/mart/tmp ?
What is utility of
On Tue, 9 Mar 2004, Monica Palaseanu-Lovejoy wrote:
Hi,
I am trying to calculate mahalanobis distances for a matrix x with
n*p variables. I am getting the following error:
md2 - mahalanobis(x, center, cov)
Error in solve.default(cov, tol = tol.inv) :
system is computationally
Hello,
I have a problem to handle the following statements.
for(i in [1:3])
{
file=paste(file, i, .dat)
bb - read.table(file)
x11()
plot(bb)
dev.off()
}
When the input .dat file is empty, the program stops
running and an error message appears. Could someone
tell me
Thanks for the insight. I think we will try both CART (rpart) and C4.5
(J4.8) and see what happens. As always, the R community is so helpful.
Thanks,
Ben
-Original Message-
From: Ko-Kang Kevin Wang [mailto:[EMAIL PROTECTED]
Sent: Tuesday, March 09, 2004 12:08 AM
To: 'Prof Brian
it looks like you are wondering about something with ESS. Could you
be more precise about the exact conditions? Also, the ess-help
mailing list might be a better place to post. Version #'s of R, and
if it is an ESS problem, ESS and (X)Emacs would be useful.
David Andel [EMAIL PROTECTED]
Take a look at try().
-roger
Susan Lin wrote:
Hello,
I have a problem to handle the following statements.
for(i in [1:3])
{
file=paste(file, i, .dat)
bb - read.table(file)
x11()
plot(bb)
dev.off()
}
When the input .dat file is empty, the program stops
running and
Hello,
I would like to create my own family for glm modelling
If we consider a matrix Y, I would like to model Yij/var(Yj) with an
inverse variance link.
I have create my own family inspired by the negative.binomial of MASS:
#
If you mean to put a check in to see if the file exists then something
like this would work:
for(i in 1:3){
aFile - paste(file, i, .dat, sep = )
if(file.exists(aFile) == T){
bb - read.table(aFile, header = F)
x11()
plot(bb)
dev.off()
}
}
If you
Finally, i found the answer for my question...
it is only necessary to add
setenv TMPDIR /tmp/
in my .cshrc
Martin Olivier wrote:
Hi all,
When I start R, it gives
mkdir: Ne peut créer le répertoire `/home/mart/tmp/Rtmp11729'.: No
such file or directory
(I specify that my home path is
One shortcoming of Erik's solution is that it can only catch the exceptions of type
error_exception. For example it won't work if my code calls some third party library
that can throw exceptions of some other types.
In case it's of interest to someone here is the boilerplate that I ended up
Probably you have TMPDIR set in your enviroment to point to
/home/mart/tmp and that does not exist or is not writable.
Solution: don't have variables pointing to inappropriate places?
On Tue, 9 Mar 2004, Martin Olivier wrote:
When I start R, it gives
mkdir: Ne peut créer le répertoire
On Tue, 9 Mar 2004, Susan Lin wrote:
I have a problem to handle the following statements.
for(i in [1:3])
{
file=paste(file, i, .dat)
Don't you mean paste(file, i, .dat, sep=) ? Or are your files
called `file 1 .dat'?
bb - read.table(file)
x11()
plot(bb)
Hi,
In the following code, I got an error meesage if an
input file is empty, and the program stopped running.
Could someone to tell me how to handle this problem. I
want the program to keep running. Thanks.
for i in [1:3]
{
file=paste(file, i, .dat)
x - read.data(file)
x(11)
I think you want
linkfun - function(mu){mu/varcol}
linkinv - function(eta){eta*varcol)}
etc, that is a function of a single argument. Also, you can use lexical
scope to capture varcol, as in the above: it will be in the environment of
linkfun/inv. You did not set its environment as MASS
For R v1.8.0 you can use tryCatch() (it's great) to catch objects of
class 'condition' and just print() them (instead of letting them
generate errors) like this:
for(i in 1:3) {
file - paste(file, i, .dat, sep=)
tryCatch({
bb - read.table(file)
x11()
plot(bb)
dev.off()
},
Hi,
I have completed a prototype of a package, say FOO, and now I want to
start using it as an ordinary R package, i.e. attach it via
library(FOO). On the other hand I will be adding functionality and
fixing bugs so the code is going to change a lot. There is a couple of
problems that don't know
I have a series of data frames that are identical structurally, i.e. -
made with the same code, but I need to add them together so that they
become one, longer, data frame, i.e. - each of the slot vectors are
increased in length by the length of the added data frame vectors.
So if I have df1 with
Prof Brian Ripley wrote:
See ?julian, which says
Note:
Other components such as the day of the month or the year are very
easy to computes: just use 'as.POSIXlt' and extract the relevant
component.
Hello,
unfortunately not all mentioned functions work on all machines. Where
Thanks for the info - it inspired me to keep tweaking.
R --min-vsize=400M --min-nsize=6M
allowed me to run in a few minutes - I had been trying larger values of
--min-vsize (600M) (I have 1 Gig of RAM, but a lot of stuff running),
but that was evidentally causing R to swap during the reshape,
My suggestion is to treat the installed package as `binary', even if the
code is purely in R. This way you will only make modifications to the
_source_ and make up the `binary' as needed. It's really not burdensome.
Your second question has nothing to do with ESS. When you modify objects on
as.numeric(format(x, f=%j))
which is the right code, works perfectly, too.
Thomas P.
__
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https://www.stat.math.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
Use rbind() (for row-bind). Here are some examples:
d1 - data.frame(x=1, y=1)
d2 - data.frame(x=1:2, y=1:2)
d3 - data.frame(x=3, y=3)
rbind(d1,d2,d3)
x y
1 1 1
11 1 1
2 2 2
12 3 3
do.call(rbind, list(d1,d2,d3))
x y
1 1 1
11 1 1
2 2 2
12 3 3
[or even this:]
do.call(rbind,
Hi R-sters,
Just wondering what I might be doing wrong. I'm trying to fit a multiple
linear regression model, and being ever mindful about the possibilities of
autocorrelation in the errors (it's a time series), the errors appear to
follow an AR1 process (ar(ts(glsfit$residuals)) selected
John -
The function rbind() operates on pairs of data frames, and
(somewhat arcane and definitely NOT for beginning users)
do.call(rbind, list(df1, df2, df3, df4, df5)))
will combine any number (in this case 5) of data frames.
As of February 2003, the do.call() approach did not deal
Correction to my reply below:
If my memory serves correctly, one year and many projects later,
I wanted to keep character data as character, not factors,
throughout. The gyrations were to maintain this despite
using rbind(), not because rbind() behaved badly with
factors. Please excuse my
Actually, rbind() operates on any number of arguments, as stated in the
documentation ?rbind. (If it only operated on pairs of arguments, the
do.call() approach wouldn't get around that anyway. The do.call() approach
can be very useful when one has a list of data frames to be rbind'ed
Hi there,
How accurate is the aproximation R makes to the Chi-Square distribution?
For example, if I run:
qchisq(1/100,6)
[1] 0.03650857
how accurate is 0.0365 compared to the theoretical percentile? What kind
of approximations have been made in the software's algorithm? It woudl be
Hi there,
I had successfully use MLE function to solve my problem. Is there
anyone knows how to get related information? i.e., value of likelihood
function, information matrix, and etc. I know MLE-class can do it but I
can not find any information tells me how to do it.
Thanks a billions,
Cédric Finet wrote:
I thank you for your answer but I do not understand yet why the Fisher´s exact
test does not work. And why is a negative key.
Cédric Finet
Running the original TOMS643 fortran code (R uses an f2c translation of
this) says:
FEXACT ERROR: 30
Stack length exceeded in
Do you mean mle() in the package `mle'? If so, see ?mle-class for a
description.
Andy
From: YIHSU CHEN
Hi there,
I had successfully use MLE function to solve my problem. Is there
anyone knows how to get related information? i.e., value of likelihood
function, information matrix, and
On 9 Mar 2004 at 14:41, John Sweval wrote:
If you have the dataframes as components of a list dfs, maybe you can
do something like
do.call(cbind, dfs)
Kjetil Halvorsen
I have a series of data frames that are identical structurally, i.e. -
made with the same code, but I need to add them
Have you read Pinheiro and Bates (2000) Mixed-Effects Models in S
and S-Plus (Springer)? I learned much from that book. Also,
help.search(lme) gave interesting results.
hope this helps. spencer graves
YIHSU CHEN wrote:
Hi there,
I had successfully use MLE function to solve my
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I want to run Rcmd BATCH with R_DEFAULT_PACKAGE=base so it doesn't load any
packages, but it seems to reject this argument because it does not start
with a '-' or '--'. Is there a different argument that will work? Thanks.
Benjamin Stabler
Transportation Planning Analysis Unit
Oregon Department
If you search the mail archives for fromchar there are a number
of discussions of similar bugs that all seem to come from
German or other European users, suggesting locale problems.
I suspect it won't be easy for others to reproduce this
so you might try to see what you can track down
On Wed, 10 Mar 2004, Thomas Petzoldt wrote:
as.numeric(format(x, f=%j))
which is the right code, works perfectly, too.
but the recommended procedure is on the help page ?julian, and of course
works perfectly. Just use 1+x$yday if you want 1-based day of the year.
--
Brian D. Ripley,
Hello,
I am a new member, and I need your help.
For my work (thesis), I use the package rpart to construct trees.
But, to continu my studies, I need to calcule the 'variable importance'. But, I
don't find a program to do this in the implementation of R.
Is there someone who know if there exist
On Wed, 10 Mar 2004, Thomas Petzoldt wrote:
(without copying me)
Prof Brian Ripley wrote:
See ?julian, which says
Note:
Other components such as the day of the month or the year are very
easy to computes: just use 'as.POSIXlt' and extract the relevant
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