But how is that different from just a 3-way ANOVA with age, diagnosis,
and gender as the the three effects? Isn't ANCOVA a fundamentally
different model?
Thanks,
Sasha
ANCOVA is a linear model with both factors and continuous variables
on the right-hand side of the model formula. In
Hello,
I have a several time series, which I would like to check for their best
fitted Arima model (I am checking for the lowest aic value).
Which lets me raise two questions:
1) is there are more efficient way, than using 6 for-loops?
2) sometimes the system cannot calculate with given
Jack B. Arnold wrote:
Dear Tom,
Looking forward to your book. Psychologists and students clearly need
all the encouragement to use R that they can get. I have been using it
for a couple of years now, and find, that for most purposes, it is just
a little harder to get into than the
plm function in plm package are for panel data model.
library(plm)
?plm
2006/8/24, Eduardo Leoni [EMAIL PROTECTED]:
Hi -
I am doing an analysis using panel data methods, particularly what
economists call fixed effects. It can easily be done in R through
the inclusion of factors in an lm
jz7 == jz7 [EMAIL PROTECTED]
on Tue, 22 Aug 2006 17:10:42 -0400 (EDT) writes:
jz7 Dear all,
jz7 I got a wierd problem when using lm.ridge() in MASS library.
there is MASS the book and MASS the package,
and there is even a MASS library (namely the file MASS.so or
MASS.dll
Deal all R users,
I am getting a warning message negative inverted hessian matrix element in:
mvBEKK.est(weekly.return.all, order = c(2, 1)) while I am using
mvBEKK.estlibrary to estimate time varying Covariance matrix using
Bivariate Garch.
Can anyone please tell me in details why I am getting
Dear R-list subscriber,
is it possible that the omegahat-site is down? I was looking for package
'RDCOMClient', but could not establish a connection. In case somebody
has the latest binary zip-file for Windows, would she/he mind to send it
directly to my emaim adress stated in the signature?
Dear all
I am writing with a question regarding SciViews for R. It's probably a slightly
stupid question but I cannot find a solution to a very elementary problem. I am
using SciViews 0.8.9 on with R 2.3.1pat on a Windows XP Home machine. R is set
to SDI mode, I start R, enter library(svGUI),
Pfaff, Bernhard Dr. [EMAIL PROTECTED] writes:
Dear R-list subscriber,
is it possible that the omegahat-site is down? I was looking for package
'RDCOMClient', but could not establish a connection. In case somebody
has the latest binary zip-file for Windows, would she/he mind to send it
Dear all,
I have a dataset
train - cbind(c(0,2,2,1,0), c(8,9,4,0,2), 6:10, c(-1, 1, 1, -1, 1))
test - cbind(1:5, c(0,1,5,1,3), c(1,1,2,0,3) ,c(1, 1, -1, 1, 1))
I want to find which rows of train and test it different in its last
column (column 4).
The solution must be something like
train
At the top of page 283 of Pinheiro and Bates, a covariance structure for
the indomethicin example is specified as
random = pdDiag(A1 + lrc1 + A2 + lrc2 ~ 1)
The argument to pdDiag() looks like a two-sided formula, and I'm struggling
to reconcile this with the syntax described in Ch4 of the book
Does this work for you?
dd - mapply(==,train,test)
dim(dd) - dim(train)
dd
[,1] [,2] [,3] [,4]
[1,] FALSE FALSE FALSE FALSE
[2,] TRUE FALSE FALSE TRUE
[3,] FALSE FALSE FALSE FALSE
[4,] FALSE FALSE FALSE FALSE
[5,] FALSE FALSE FALSE TRUE
HTH
steve
Muhammad Subianto wrote:
Dear
Hi
maybe simple math can do it.
different
(train[,4]-test[,4])!=0
same
(train[,4]-test[,4])==0
if you are sure the numbers are integers
HTH
Petr
On 24 Aug 2006 at 12:03, Muhammad Subianto wrote:
Date sent: Thu, 24 Aug 2006 12:03:31 +0200
From: Muhammad
Dear all
I try to refine my nlme models and with partial success. The model is
refined and fitted (using Pinheiro/Bates book as a tutorial) but when
I try to plot
plot(augPred(fit4))
I obtain
Error in predict.nlme(object, value[1:(nrow(value)/nL), , drop =
FALSE], :
Levels
I am new to R and am looking for a book that can help in learning to
program in R. I have looked at the R website suggested books but I am
still not sure which book best suite my needs. I am interesting in
programming, data manipulation not statistics. Any suggestions?
Raphael
Mark Orr wrote:
Tom, i'm a psychologist with much interest in training future
psychologists (and others) to use R/S+. So, if you need anyone to
review or give feedback on draft versions of your work, I'd be happy to
review.
Thank you! That is a very generous offer. The project is so far
I recently invested in two books: Venables and Ripley Modern Applied
Statistics in S, and Everitt and Rabe Heskith's Analyzing Medical
Data in S-Plus
I think either one is a good self-teaching tool.
On 8/24/06, Raphael Fraser [EMAIL PROTECTED] wrote:
I am new to R and am looking for a book that
--- Raphael Fraser [EMAIL PROTECTED] wrote:
I am new to R and am looking for a book that can
help in learning to
program in R. I have looked at the R website
suggested books but I am
still not sure which book best suite my needs. I am
interesting in
programming, data manipulation not
Hi Raphael:
You mention being interested in programming, which covers many various
topics itself. I wholeheartedly recommend:
S Programming (2000) by Venables and Ripley .
Don't let the date of the book nor the fact that R is not mentioned in the
title dissuade you. Much like MASS by Venables
This is a very basic question, but I am a bit confused with optim. I
want to get the MLEs using optim which could replace the newton-raphson
code I have below which also gives the MLEs. The function takes as input
a vector x denoting whether a respondent answered an item correctly
(x=1) or not
Hi, I'm new here.
I need to use R to analyze a particular time serie.
I have to estimate the pubblication of a news of an online newspaper,
for example in the CNN site.
I have many text files and every file correspond to a day. In every
file I have two columns:
1) in the first column there is
Hi All,
I regret for sending my question many times as there was some problem at
my end. Further, I am just sending this post to confirm whether my post is
reaching or not.
Sayonara With Smile With Warm Regards :-)
G a u r a v Y a d a v
Senior Executive Officer,
Economic Research
Peter Dalgaard wrote:
Tom Backer Johnsen [EMAIL PROTECTED] writes:
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
Hi
not sure but are there some NA values in your data?
what
length(mtf)
and
length(fitted(f2))
tells you?
And you need not to use assignment
graph1 - plot()
to output a plot on screen.
HTH
Petr
On 24 Aug 2006 at 13:43, Simon Pickett wrote:
Date sent: Thu, 24 Aug 2006
There is some online material at:
http://zoonek2.free.fr/UNIX/48_R/all.html
http://pj.freefaculty.org/R/statsRus.html
On 8/24/06, Raphael Fraser [EMAIL PROTECTED] wrote:
I am new to R and am looking for a book that can help in learning to
program in R. I have looked at the R website suggested
Hi, thanks for replying.
No, there arent any NA's in the original data set
I think I must be mis-interpreting the use of lines()?
in the example what exactly is y?
lines(y,exp(tmp[1]+tmp[2]))
In my case tmp[1] and tmp[2] are coeficients from the model so just one
number (not a vector) and I
I think Peter Dalgaard is right.
Since you are able to use R I believe you will be very fast in learning
LaTeX.
I think it needs less then a week to learn the most common LaTeX
commands. And setting up a wiki and trying then to convert this into a
printable document format plus learning the wiki
Dear readers,
Is it possible to specify a model
y=X %*% beta + Z %*% b ; b=(b_1,..,b_k) and b_i~N(0,v^2) for i=1,..,k
that is, a model where the random slopes for different covariates are i.i.d.,
in lmer() and how?
In lme() one needs a constant grouping factor (e.g.: all=rep(1,n)) and would
Hi
from lines help page
x, y coordinate vectors of points to join.
and lines or points simply adds lines or points to existing plot.
What do you want to plot with lines?
HTH
Petr
On 24 Aug 2006 at 14:52, Simon Pickett wrote:
Date sent: Thu, 24 Aug 2006 14:52:09 +0100 (BST)
Hi Harold,
you're probably looking for something like:
rasch.max2 - function(x, betas){
opt - function(theta){
-sum(dbinom(x, 1, plogis(theta - betas), log = TRUE))
}
out - optim(log(sum(x)/(length(x)/sum(x))), opt, method = BFGS,
hessian = TRUE)
cat('theta is about',
I am looking for help install the x86_64 R Binary onto my FC5 machine. At
the risk of subjecting myself to tons of criticism, I must confess that I
don't know anything about Linux and I have never compiled R from source.
Therefore, I choose FC5 because I see that a 64-bit binary is already
On Wed, 23 Aug 2006, Eduardo Leoni wrote:
I created this function following Farnsworth
(http://cran.r-project.org/doc/contrib/Farnsworth-EconometricsInR.pdf)
demean - function(x,index) {
for (i in unique(index)) {
for (j in 1:ncol(x)) {
x.now - x[index==i,j]
x[index==i,j] -
Recently, I was working with some lagged designs where a vector of
observations at one time was used to predict a vector of observations at
another time using a lag 1 design. In the work, I noticed a lot of
negative correlations, so I ran a simple simulation with 2 matched
points. The crude
On 8/24/06, Gabor Grothendieck [EMAIL PROTECTED] wrote:
Here is one more solution . It uses the reshape package.
Its faster than using reshape but not as fast as xtabs;
however, it is quite simple -- just one line and if that
matters it might be useful:
library(reshape)
system.time(w4 -
Hej,
On Wed, 23 Aug 2006, Duncan Murdoch wrote:
On 8/23/2006 5:15 PM, Gaspard Lequeux wrote:
When exporting a image from rgl, the following error is encountered:
rgl.postscript('testing.pdf', fmt=pdf)
RGL: ERROR: can't bind glx context to window
RGL: ERROR: can't bind glx context to
On Thu, 2006-08-24 at 10:53 -0400, roger bos wrote:
I am looking for help install the x86_64 R Binary onto my FC5 machine. At
the risk of subjecting myself to tons of criticism, I must confess that I
don't know anything about Linux and I have never compiled R from source.
Therefore, I choose
Hi Roger,
I dunno what exactly might be the source of that mistake but I would
strongly recommend to install R while you are online. Often other
packages must be installed for dependencies.
(And then I recommend using the smart package manager (
http://labix.org/smart ) which is a great tool and
Hi,
the problem is:
/usr/bin/ld: cannot find -lblas-3
collect2: ld returned 1 exit status
make: ** [ape.so] Erro 1
ERROR: compilation failed for package 'ape'
** Removing '/usr/local/lib/R/site-library/ape'
Any help would be appreciated.
Thanks,
Bruno G. M.
On Thu, 24 Aug 2006, Bliese, Paul D LTC USAMH wrote:
Recently, I was working with some lagged designs where a vector of
observations at one time was used to predict a vector of observations at
another time using a lag 1 design. In the work, I noticed a lot of
negative correlations, so I ran
Raphael Fraser wrote:
I am new to R and am looking for a book that can help in learning to
program in R. I have looked at the R website suggested books but I am
still not sure which book best suite my needs. I am interesting in
programming, data manipulation not statistics. Any suggestions?
Hi Bruno,
Your missing the Basic Linear Algebra Subroutines 3.0 package.
apt-get install refblas3
should fix the problem. (At least in Debian, should be the same for Ubuntu)
Ryan
Bruno Grimaldo Martinho Churatae wrote:
Hi,
the problem is:
/usr/bin/ld: cannot find -lblas-3
collect2: ld
Sorry, that should be:
apt-get install refblas3-dev
apt-get install refblas3
should fix the problem. (At least in Debian, should be the same for Ubuntu)
Ryan
Bruno Grimaldo Martinho Churatae wrote:
Hi,
the problem is:
/usr/bin/ld: cannot find -lblas-3
collect2: ld returned 1 exit status
Thanks so much Marc Stefan! The GUI wasn't telling me what I was
missing. The terminal told me I was missing tk-8.4.12-1.2.x86_64.rpm so I
went and got that and it installed without errors. Then I could't figure
out how to launch R through the GUI so I went back to the terminal and typed
R and
Hi
I have no experience with lmer and its plotting method. However If it
uses plain (not grid) graphics you maybe shall consult abline and/or
segments.
If it uses grid, you shall consult panel.abline from lattice package.
BTW. Better to copy your answer every time to the list as somebody
On Thu, 24 Aug 2006, Anne Katrin Heinrichs wrote:
metaplot:
-
Can I change the label size? I've got 126 values and the intersection of the
labels makes
it impossible to read them.
Yes. metaplot() accepts the cex graphics parameter. This doesn't alter the
size of the summary text,
Hello,
A made a xyplot using the lattice library in R (latest version).
The publisher of our paper has requested:
1. all tick marks should point inwards instead of outwards.
2. All lines should be thicker (lines, axes, boxes, etc. Everything). Lines
is easy...I used: lwd=1.5
The covariance has the same sign as the
correlation so lets calculate the sample covariance
of the vector T1 = (X,Y) with T2 = (Y,Z) where we ignored
the third component in each case due to use=complete.
cov(T1, T2) = XY + YZ - (X+Y)/2 * (Y+Z)/2
X, Y and Z are random variables so we take
Thanks!
Sorry, I forgot to add the output of meta.summaries:
Random-effects meta-analysis
Call: meta.summaries(d = CoeffVector, se = StdErrorVector,
method = random,
logscale = FALSE)
Summary effect=NaN 95% CI (NaN, NaN)
If anyone has further hints, what the problem is, that
On 8/24/2006 11:19 AM, Gaspard Lequeux wrote:
Hej,
On Wed, 23 Aug 2006, Duncan Murdoch wrote:
On 8/23/2006 5:15 PM, Gaspard Lequeux wrote:
When exporting a image from rgl, the following error is encountered:
rgl.postscript('testing.pdf', fmt=pdf)
RGL: ERROR: can't bind glx context to
Hi:
I am using the following command:
xyplot(dat6$CO3*1e6 ~ dat6$irradiance, data=dat6, group=ref,
xlab=list(label=expression(paste(Irradiance (, mu, mol photons,
m^-2, , s^-1, ))), cex=1.3),
ylab=list(label=expression(paste(Carbonate concentration (x , 10^6,
, kg^-1, ))) ,
Roger,
The Windows packages will not run on Linux. You will need to install
them using the Linux versions (.tar.gz files) of the CRAN packages.
You can copy them from a CRAN mirror to your USB drive and then install
them locally using
R CMD INSTALL PackageName.tar.gz
This will again need
Dear Stephen C. Upton Petr Pikal
Thank you both very much for the suggestions!
Best wishes, Muhammad Subianto
On this day 24/08/2006 12:03, Muhammad Subianto wrote:
Dear all,
I have a dataset
train - cbind(c(0,2,2,1,0), c(8,9,4,0,2), 6:10, c(-1, 1, 1, -1, 1))
test - cbind(1:5, c(0,1,5,1,3),
On Thu, 24 Aug 2006, Joerg van den Hoff wrote:
Raphael Fraser wrote:
I am new to R and am looking for a book that can help in learning to
program in R. I have looked at the R website suggested books but I am
still not sure which book best suite my needs. I am interesting in
programming,
On Thu, 24 Aug 2006, roger bos wrote:
Thanks so much Marc Stefan! The GUI wasn't telling me what I was
missing. The terminal told me I was missing tk-8.4.12-1.2.x86_64.rpm so I
went and got that and it installed without errors. Then I could't figure
out how to launch R through the GUI so
Dear all,
I apologize if my question is quite simple.
I have a dataset (20 columns 1000 rows) which
some of columns have the same value and the others
have different values.
Here are some piece of my dataset:
obj - cbind(c(1,1,1,4,0,0,1,4,-1),
c(0,1,1,4,1,0,1,4,-1),
Piet Bell wrote:
Hello,
A made a xyplot using the lattice library in R (latest version).
The publisher of our paper has requested:
1. all tick marks should point inwards instead of outwards.
2. All lines should be thicker (lines, axes, boxes, etc. Everything). Lines
Look through the output of trellis.par.get() for the right parameters
or when all else fails use grid (which we use below for the
box around the panel since I could not locate the parameter):
library(lattice)
library(grid)
x - 1:12
g - gl(3,4)
lwd - 3
xyplot(x ~ x | g, type = l, lwd = lwd,
Try par.settings=
You can find examples via:
RSiteSearch(par.settings) .
On 8/24/06, Gattuso, Jean-Pierre [EMAIL PROTECTED] wrote:
Hi:
I am using the following command:
xyplot(dat6$CO3*1e6 ~ dat6$irradiance, data=dat6, group=ref,
xlab=list(label=expression(paste(Irradiance (, mu,
S Poetry may be of use to you. Some things are now
out-of-date and some things are wrong for R, but mostly
it's right. And the price is right.
Patrick Burns
[EMAIL PROTECTED]
+44 (0)20 8525 0696
http://www.burns-stat.com
(home of S Poetry and A Guide for the Unwilling S User)
Raphael Fraser
On 8/24/06, Gabor Grothendieck [EMAIL PROTECTED] wrote:
Look through the output of trellis.par.get() for the right parameters
or when all else fails use grid (which we use below for the
box around the panel since I could not locate the parameter):
library(lattice)
library(grid)
x - 1:12
g
(Mailing list information, including unsubscription instructions,
is located at the end of this message.)
__
LancashireClubbers.co.uk
Hi,
LancashireClubbers.co.uk is pleased to announce the official launch of
there forum - http://forum.lancashireclubbers.co.uk
Here is a way to automate finding the lwd= parameters.
library(lattice)
# test data
x - 1:12
g - gl(3, 4)
lwd - 3
# set parameters
par - trellis.par.get()
par - lapply(par, function(x) replace(x, names(x) == lwd, lwd))
xyplot(x ~ x | g, type = l, par.settings = par)
On 8/24/06, Chuck Cleland
That should read finding and setting. Chuck already showed how
to find them.
On 8/24/06, Gabor Grothendieck [EMAIL PROTECTED] wrote:
Here is a way to automate finding the lwd= parameters.
library(lattice)
# test data
x - 1:12
g - gl(3, 4)
lwd - 3
# set parameters
par -
Hello,
I have a few questions about Ouliaris Unit Root Test of type Pz
1) I noticed that critical values given in the article Asymptotic properties
of residual... by Phillips and Ouliaris are different from those given by R.
More presicely - they are swaped with each other. Could explain why?
Stefan Grosse wrote:
I think Peter Dalgaard is right.
Since you are able to use R I believe you will be very fast in learning
LaTeX.
I think it needs less then a week to learn the most common LaTeX
commands. And setting up a wiki and trying then to convert this into a
printable document
Hello, R users,
I have two factors (treat, section) anova design experiment where
there are 3 replicates. The objective of the experiment is to test if
there is significant difference of yield between top (section 9 to 11)
and bottom (section 9 to 11) of the fruit tree under treatment. I
i'm sure someone else will explain the recursion issue but , as far as your
program running a few days, you don't have to wait this long. if you are in
windows and do
a ctrl alt delete and then click on processes, if the memory usage being
used by that R process is staying EXACTLY the same
There was some discussion here:
http://finzi.psych.upenn.edu/R/Rhelp02a/archive/73646.html
On 8/24/06, Jason Liao [EMAIL PROTECTED] wrote:
I recently coded a recursion algorithm in R and ir ran a few days
without returning any result. So I decided to try a simple case of
computing binomial
On 24-Aug-06 [EMAIL PROTECTED] wrote:
Hello, R users,
I have two factors (treat, section) anova design experiment where
there are 3 replicates. The objective of the experiment is to test if
there is significant difference of yield between top (section 9 to 11)
and bottom (section 9 to
I recently coded a recursion algorithm in R and ir ran a few days
without returning any result. So I decided to try a simple case of
computing binomial coefficient using recusrive relationship
choose(n,k) = choose(n-1, k)+choose(n-1,k-1)
I implemented in R and Fortran 90 the same algorithm (code
Hej,
On Thu, 24 Aug 2006, Duncan Murdoch wrote:
On 8/24/2006 11:19 AM, Gaspard Lequeux wrote:
On Wed, 23 Aug 2006, Duncan Murdoch wrote:
On 8/23/2006 5:15 PM, Gaspard Lequeux wrote:
When exporting a image from rgl, the following error is encountered:
rgl.postscript('testing.pdf',
Hi!
I would like to be able to create formulas automatically. For example, I
want to be able to create a function that takes on two values: resp and
x, and then creates the proper formula to regress resp on x.
My code:
fit.main - function(resp,x) {
form - expression(paste(resp, ~
On 8/24/06, Muhammad Subianto [EMAIL PROTECTED] wrote:
I have a dataset (20 columns 1000 rows) which
some of columns have the same value and the others
have different values.
Here are some piece of my dataset:
obj - cbind(c(1,1,1,4,0,0,1,4,-1),
c(0,1,1,4,1,0,1,4,-1),
Use as.formula to convert the character string to an object of class formula
and note that we want to set the formula's environment appropriately:
fit.main - function(resp, x, env = parent.frame()) {
fo - as.formula(paste(y, ~, paste(x, collapse = +)))
environment(fo) - env
We have R 2.2.1 installed on a Linux cluster that seems to have problems
loading either of our shared object libraries for packages. This seems to be
happening on both local and global versions of packages that we install.
However, we have only noticed this problem in the past 3 months on
I need to apply a yearly inflation factor to some
wages and supply some simple sums by work category. I
have gone at it with a brute force for loop approach
which seems okay as it is a small dataset. It looks
a bit inelegant and given all the warnings in the
Intro to R, etc, about using loops I
On Thu, 2006-08-24 at 14:01 -0700, Maria Montez wrote:
Hi!
I would like to be able to create formulas automatically. For example, I
want to be able to create a function that takes on two values: resp and
x, and then creates the proper formula to regress resp on x.
My code:
fit.main -
Maria Montez wrote:
Hi!
I would like to be able to create formulas automatically. For example, I
want to be able to create a function that takes on two values: resp and
x, and then creates the proper formula to regress resp on x.
My code:
fit.main - function(resp,x) {
form -
--- Muhammad Subianto [EMAIL PROTECTED] wrote:
Dear all,
I apologize if my question is quite simple.
I have a dataset (20 columns 1000 rows) which
some of columns have the same value and the others
have different values.
Here are some piece of my dataset:
obj -
Hi
The August 2006 issue of R News is now available on CRAN under the
Documentation/Newsletter link.
Many thanks to Ron Wehrens, our guest editor for this special issue.
Paul
(on behalf of the R News EditorialBoard)
--
Dr Paul Murrell
Department of Statistics
The University of Auckland
Private
Sinnwell, Jason P. [EMAIL PROTECTED] writes:
We have R 2.2.1 installed on a Linux cluster that seems to have problems
loading either of our shared object libraries for packages. This seems to be
happening on both local and global versions of packages that we install.
However, we have
Use cbind to create a two column matrix, mat,
and multiply that by the appropriate inflation factors.
Then use rowsum to sum the rows according to the
id grouping factor.
inf.fac - list(year1 = 1, year2 = 5, year3 = 10)
mat - cbind(s1 = df1$cat1 + df1$cat2, s2 = df1$cat3 + df1$cat4)
rowsum(mat *
On Thu, 24 Aug 2006, Jason Liao wrote:
I recently coded a recursion algorithm in R and ir ran a few days
without returning any result. So I decided to try a simple case of
computing binomial coefficient using recusrive relationship
choose(n,k) = choose(n-1, k)+choose(n-1,k-1)
I implemented
Try sd(obj.tr) which will give a vector of standard deviations, one per column.
A column's entry will be zero if and only if all values in the column
are the same.
On 8/24/06, Muhammad Subianto [EMAIL PROTECTED] wrote:
Dear all,
I apologize if my question is quite simple.
I have a dataset (20
The page is either too busy, or there is something seriously wrong with
access to this page.
Most of the time, trying to reach www.bioconductor.org results in
failure. Only once in a
blue moon, do I get through.
In fact, thus far, I have not been able to install bioconductor, since
the first
Absolutely. But do note that if the values in obj are the product of
numerical computations then columns of equal values may turn out to be only
**nearly** equal and so the sd may turn out to be **nearly** 0 and not
exactly 0. This is a standard issue in numerical computation, of course, and
has
Fair enough although in the case of the example it does not appear to
be a problem:
sd(obj.tr)
[1] 0.3535534 0.000 0.000 0.000 2.5495098 0.000 0.000
[8] 1.5811388 0.000
Further, if all entries in the matrix are integers, as in the example,
then we know that:
nr -
Dear useRs,
the new version 1.2-0 of the zoo package for dealing with regular and
irregular time series data is available from the CRAN mirrors.
This version includes two important changes/enhancements:
- rapply() was re-named to rollapply() because from R 2.4.0 on,
base R provides a
Dear useRs,
a new version 2.0-0 of the sandwich package for estimating sandwich
covariance matrices is available from the CRAN mirrors.
The tools for computing heteroskedasticity (and autocorrelation)
consistent covariance matrix estimators (also called HC
and HAC estimators, including the
Hi,
I'm making an interface, where a Tcl/Tk window have few listbox widgets.
I need to select separate parameters from separate listboxes.
It is clear how to get cursor selection value, once you know which listbox
widget you clicked.
The problem is I can't figure out which one tcltk command to
As a minor footnote to both of these, I would add that both assume
that all the columns of the dataset are numeric. It doesn't cost much
to generalize it to cover any matrix structure, of any mode:
constantColmuns - function(Xmat)
which(apply(Xmat, 2, function(z) length(unique(z)) == 1))
91 matches
Mail list logo
