Folks, please see ?colMeans (as already pointed out in at least one
message) and friends.
These are faster than those apply(X, 2, mean) calls
and please do use them when publishing code (both in packages in on this
list).
Uwe Ligges
Hello,
I've got an array defined as y - rnorm(3000), dim(y) -
Hi
I found the following unexpected:
integrate(function(x){0*x+1+1i},0,1)
1 with absolute error 1.1e-14
One can write a little wrapper, but it's messy. Would it be hard to
accommodate such functions?
The manpage for integrate() does not mention imaginary numbers.
--
Robin Hankin
Uncertainty
You could be really classical and use the iris data!
have a look at:
http://biostat.mc.vanderbilt.edu/twiki/bin/view/Main/DataSets
the titanic dataset is a real classic one!
However it depends very much what you want to study:
Anne
- Original Message -
From: Talita Leite [EMAIL
There are indeed speed advantages in using colSums etc. However the
disadvantage is that the newbie doesn't always find the power inherent in the
apply, sapply, tapply and mapply. For many things that I do, the speed is the
least of my worries; although I take the point that using apply for
Thank you for contacting me - I am travelling and away from
the office between 7th-13th of January although I will be
accessing email occasionally.
Please contact me on my mobile if the matter is urgent +44
(0)7880 743 962 or in my absence please contact one of the
following members team who
Hi Tom,
There is the R Reference Card by Tom Short and Rpad, which is
extremely useful for a quick browsing of basic R functions. Check:
http://tolstoy.newcastle.edu.au/R/help/04/12/9637.html
For instance, colSums() and friends are in the Matrices section.
Best,
Dimitris
Dimitris Rizopoulos
Thank you for all the responses; in fact, it was all solved by using
Bioconductor
library(reposTools)
install.packages2(XML)
However, I am still having heaps of trouble getting SSOAP, Rcurl and
KEGGSOAP to use my proxy server
Mick
-Original Message-
From: dr mike [mailto:[EMAIL
Hi!
I want to determine the relative contribution (or importance) of the independet
variables in a two-class case from the discriminant coefficients given in
obj.lda$scaling. Are the discriminant coefficinets standardized or do I have to
do that? What about other method like partial F-test or
I need to do multiple comparisons following nlme analysis (Compare
the effects of different treatments on a response measured
repeatedly over time;
fixed = response ~ treat*time).
If you have an interaction it does not really make sense to conduct a
multiple comparison because the difference
Dear Thomas,
My suggestion would be as follows:
y - rnorm(3000)
dim(y) - c(3, 1000).
#then create three column vectors out of y using cbind():
w-cbind(y[1,],y[2,],y[3,])
# and calculate the row means
for (i in 1:1000) z[i]-mean(w[i,1:3])
z
Hope I got it right!
Regards,
Christoph
Thomas Hopper
Hi all - (this is posted to r-help and R-SIG-MAC)
OSX 10.3.7, R 2.0.1, lme4/Matrix/latticeExtra latest, fresh install of
R. MASS loaded (or not).
I am getting an error message for the print() and summary() commands
with all lme models I try and run in lme4 (GLMM's work fine). Using
the
Many helpful replies; my thanks to all of you!
colMeans() or the apply() function were what I was looking for (though
the looping functions will surely come in handy elsewhere).
On Jan 10, 2005, at 11:03 PM, Marc Schwartz wrote:
# get the column means
z - colMeans(y)
Best regards,
Tom
Hello!
plot(1:10,main=expression(1 = m = 5))
The above command works perfectly in R 1.9.1 but returns an error in R 2.0.1
This is documented in NEWS for R 2.0.0 (or ONEWS in R 2.0.1) and it is said:
o R no longer accepts associative use of relational operators.
That is, 3 2 1
Hi,
Does anyone know of a function in R that can estimate the parameters of
a transfer function model with added noise like in SAS?
Thanks in advance,
Sam.
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R-help@stat.math.ethz.ch mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do
Dear R-list,
I try to use StructTS for some univariate time series, with a type=BSM. I
have two questions:
1-in the fitted value of the object, it seems to me that for getting back
fitted values, one have to add level, slope and seasonal (or level
contains already the two other ones)
2-i am
Andrew Beckerman wrote:
Hi all - (this is posted to r-help and R-SIG-MAC)
OSX 10.3.7, R 2.0.1, lme4/Matrix/latticeExtra latest, fresh install of
R. MASS loaded (or not).
I am getting an error message for the print() and summary() commands
with all lme models I try and run in lme4 (GLMM's work
Ale iberna wrote:
Hello!
plot(1:10,main=expression(1 = m = 5))
The above command works perfectly in R 1.9.1 but returns an error in R 2.0.1
This is documented in NEWS for R 2.0.0 (or ONEWS in R 2.0.1) and it is said:
o R no longer accepts associative use of relational operators.
That is,
Hello all,
Would somebody be kind enough to show me how to do a KS test in R for a
lognormal distribution with ESTIMATED parameters. The R function
ks.test()says the parameters specified must be prespecified and not
estimated from the data Is there a way to correct this when one uses
estimated
Hi
I'm Ph.D student and I need an R code to compute the chi square diistance
between n profile rows in a matrix.
could you help me please?
Thanks
Paola
Libero ADSL: 3 mesi gratis e navighi a 1.2 Mega. E poi hai l'Adsl
On Tue, 11 Jan 2005, Robin Hankin wrote:
The manpage for integrate() does not mention imaginary numbers.
The help page does say
f: an R function taking a numeric first argument and returning a
numeric vector of the same length.
and in R complex numbers are not numeric (see
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R-help@stat.math.ethz.ch mailing list
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PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
- Oorspronkelijk bericht -
Van: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
Verzonden: dinsdag, januari 11, 2005 12:10 PM
I'm Ph.D student and I need an R code to compute the chi square diistance
between n profile rows in a matrix.
There is a ready-made function dudi.dist in package
maybe something like:
mat - rnorm(9); dim(mat) - c(3,3)
mat
###
cbind(i=rep(1:nrow(mat), each=ncol(mat)),
j=rep(1:ncol(mat), nrow(mat)), value=c(t(mat)))
I hope it helps.
Best,
Dimitris
Dimitris Rizopoulos
Ph.D. Student
Biostatistical Centre
School of Public Health
Thank you very much!
I guess I need a new dictionary!
Ales Ziberna
- Original Message -
From: Uwe Ligges [EMAIL PROTECTED]
To: Ale iberna [EMAIL PROTECTED]
Cc: R-help r-help@stat.math.ethz.ch
Sent: Tuesday, January 11, 2005 12:47 PM
Subject: Re: [R] Changes in expression in R 2.0.1
On Jan 11, 2005, at 7:55 AM, Dimitris Rizopoulos wrote:
mat - rnorm(9); dim(mat) - c(3,3)
mat
###
cbind(i=rep(1:nrow(mat), each=ncol(mat)),
j=rep(1:ncol(mat), nrow(mat)), value=c(t(mat)))
That will do it. Thanks!
Sean
__
Sean Davis wrote:
I have a matrix that I want to turn into a transformed matrix that
includes the indices from the original matrix and the value. The matrix
is simply real-valued and is square (and large (8k x 8k)). I want
something that looks like (for the 3x3 case):
ijvalue
11
Dear all,
Does anyone know where there is R or S code for the CUSUM SQUARED
structural breaks approach? (Brown, Durban and Evans, 1975 - used in
Pesaran and Timmerman, 2002)
The problem is that the breaks package only appears to offer the
standard 'unsquared' CUSUM, even though it appears most
Dear all,
I can not find/understand the solution to this from the help pages:
Say we have the following script:
x-matrix(c(1,1,0,1,0,1,0,1,1),3,3)
image(x)
How can I change the ranges on the vertical and horizontal axis to a
range of my own or at least place a box frame around the image if I
Sundar Dorai-Raj wrote:
Sean Davis wrote:
I have a matrix that I want to turn into a transformed matrix that
includes the indices from the original matrix and the value. The
matrix is simply real-valued and is square (and large (8k x 8k)). I
want something that looks like (for the 3x3 case):
Sean Davis [EMAIL PROTECTED] writes:
On Jan 11, 2005, at 7:55 AM, Dimitris Rizopoulos wrote:
mat - rnorm(9); dim(mat) - c(3,3)
mat
###
cbind(i=rep(1:nrow(mat), each=ncol(mat)),
j=rep(1:ncol(mat), nrow(mat)), value=c(t(mat)))
That will do it. Thanks!
Also,
On Tue, 11 Jan 2005 13:10:51 + Rick Ram wrote:
Dear all,
Does anyone know where there is R or S code for the CUSUM SQUARED
structural breaks approach? (Brown, Durban and Evans, 1975 - used in
Pesaran and Timmerman, 2002)
Not to my knowledge.
The problem is that the breaks package
Dear useRs,
I have a function that creates several global objects with
assign(obj,obj,.GlobalEnv), and which I need to run iteratively in
another function. The code is similar to
f - function(...) {
assign(obj,obj,.GlobalEnv)
}
fct - function(...) {
for (i in 1:1000)
{
...
On 10 Jan 2005, Peter Dalgaard wrote:
Dan Bolser [EMAIL PROTECTED] writes:
Cheers. This is really me just being lazy (as usual). The latex function
in Hmisc allows me to make a .ps file then grab a screen shot of that ps
and make a .png file.
I would just like to use plot so I can wrap it
Dear all,
Thanks to those 3 people who sent me answers to my question. Got
the problem solved. Great!
Now, another question of mine is:
I would like to run an R script from the Linux prompt. Is there any way
possible to do this? The reason is, the calculation that I'm doing takes a
few
Costas Vorlow wrote:
Dear all,
I can not find/understand the solution to this from the help pages:
Say we have the following script:
x-matrix(c(1,1,0,1,0,1,0,1,1),3,3)
image(x)
How can I change the ranges on the vertical and horizontal axis to a
range of my own or at least place a box frame
Hi,
I believe that to performe KS test parameters must not
be estimated by sample data.
Despite some advantages, the KS test has several
important limitations:
1. It only applies to continuous distributions.
2. It tends to be more sensitive near the center of
the distribution than at the
Could somebody please tell me what does the r-help-bounce address do?
When I try to respond to an r-help post, my mailer (Lotus Notes) generates
the r-help bounce return address automatically in addition to the original
sender address and the r-help address. I responded to an r-help message
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