Hi,
If I have a matrix , say a11 a12
a21 a22
Is there a routine to get: a11 a12
a11 a12
a21 a22
I just figured out a way to do this:
rep.vec - function(X,n)return(t(array(rep(X,n),c(length(X),n
Then,apply(MyMatrix, 2, rep.vec,2)
Is there a better way ? Is there an internal function to repeat a vector or
matrix ?
Thanks a lot.
- Original Message -
On 9/30/2006 1:00 AM, Tong Wang wrote:
Hi Duncan:
Thank you for your help last time, since I do not use NULL to indicate
empty enviroment, I think I'm fine.
And yes, I did upgrade my R version recently, but how comes I still get this
warning for new files created
and saved after
[EMAIL PROTECTED] wrote:
What is the correct form to write statement meaning:
if (a==1) {b=2; c=3}; else {b=0; c=0};
if (a==1) {b=2; c=3} else {b=0; c=0};
;-)
Uwe Ligges
Thank you
Jue Wang, Biostatistician
Contracted Position for Preclinical Research Biostatistics
PrO
Solution:
m[rep(1:nrow(m),each=2),]
Explanation:
There is a simple and effective way to do this, using array slices.
for your input matrix, m:
m=matrix(paste(a,c(11,12,21,22),sep=),2)
m
[,1] [,2]
[1,] a11 a21
[2,] a12 a22
you want to create
[,1] [,2]
[1,] a11 a21
[2,] a11
[EMAIL PROTECTED] wrote:
What is the correct form to write statement meaning:
if (a==1) {b=2; c=3}; else {b=0; c=0};
if (a==1) {b=2; c=3} else {b=0; c=0};
Jim
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Maybe this one?
MyMatrix - matrix(1:4, nrow=2)
MyMatrix
[,1] [,2]
[1,]13
[2,]24
MyMatrix[rep(seq(nrow(MyMatrix)), each=2), ]
[,1] [,2]
[1,]13
[2,]13
[3,]24
[4,]24
HTH,
Adrian
On Saturday 30 September 2006 09:33, Tong Wang wrote:
I
Here are 4 approaches in order from most compact
to least. #1 only works for numeric matrices, # 2 is
a shorter versio of your solution using rep.vec and # 3
is from Alex's post and is likely what I would
use in practice.
m - matrix(1:4, 2) # test matrix
# 1 - m must be numeric for this one to
Dear all,
Could you pleas advise me on the following?
I need to use general(ized) linear models (binomial distribution + logit
link function) , to describe the preferred environment of each species (each
sample is an individual in which I have measured several variables and also
recorded
On Fri, 29 Sep 2006, Alberto Monteiro wrote:
Is there any heteroskedasticity test in the package? Something
that would flag a sample like
x - c(rnorm(1000), rnorm(1000, 0, 1.2))
The package lmtest contains several tests for heteroskedasticity, in
particular the Breusch-Pagan test (and also
I was reading about the project drawer feature in Textmate, which is Mac
only.
Is there a similar feature in a Windows based text editor that works with R.
This feature sounds really useful.
Thanks,
Graham
[[alternative HTML version deleted]]
On Sat, 30 Sep 2006, Sara Mouro wrote:
Dear all,
Could you pleas advise me on the following?
I need to use general(ized) linear models (binomial distribution + logit
link function) , to describe the preferred environment of each species (each
sample is an individual in which I have
Dear R users,
I am calculating several cox proportional hazard models after each other (I
know this is unusual, but I am just exploring the data). For the purpose of
multiple testing correction I need to construct an array of these p-values.
However since the output is not an array in
On 9/29/2006 5:41 PM, Pankaj Savdekar wrote:
Thanks for the quick reply.
On 9/29/2006 8:53 AM, Pankaj Savdekar wrote:
Hi,
I'm trying to build R-2.3.1 on windows, but make gives me following error
while building pkg-base:
-- Making package base
adding build stamp
On 9/30/2006 6:29 AM, Uwe Ligges wrote:
[EMAIL PROTECTED] wrote:
What is the correct form to write statement meaning:
if (a==1) {b=2; c=3}; else {b=0; c=0};
if (a==1) {b=2; c=3} else {b=0; c=0};
That's valid, but is it correct form? The semicolon at the end is not
needed. I'd say
On 9/30/2006 8:38 AM, Graham Smith wrote:
I was reading about the project drawer feature in Textmate, which is Mac
only.
Is there a similar feature in a Windows based text editor that works with R.
This feature sounds really useful.
If you don't get an answer, it would probably be a good
Duncan,
That seems a good idea :-)
Project drawer appears to be a side panel in TextMate with folders where you
can drop and drag R output and code into, not sure about graphic output, but
that would also be useful.
Each folder representing a particular project - hence the name.
Graham
On
Duncan Murdoch wrote:
On 9/30/2006 6:29 AM, Uwe Ligges wrote:
[EMAIL PROTECTED] wrote:
What is the correct form to write statement meaning:
if (a==1) {b=2; c=3}; else {b=0; c=0};
if (a==1) {b=2; c=3} else {b=0; c=0};
That's valid, but is it correct form? The semicolon at the end is
This is how you go about doing this.
summary(results)$coefficients[1,5]
You will have to check this for you code. But the idea is that
summary(results) is a list (?) and one of its components is called
coefficients, which is a matrix. So the problem is just to extract
one element of this matrix.
Hi,
I would like to write a list to an ascii file.
I tried the following
y - list(a = 1, b = c(TRUE,FALSE), c = oops)
save(y, file=y.data, ascii=TRUE)
# Not satisfactory
print does not have a file= option
cat cannot handle lists.
write does not handle lists
write.table converts it to a d.f
try:
sink(y.data)
y
sink()
On 9/30/06, Ritwik Sinha [EMAIL PROTECTED] wrote:
Hi,
I would like to write a list to an ascii file.
I tried the following
y - list(a = 1, b = c(TRUE,FALSE), c = oops)
save(y, file=y.data, ascii=TRUE)
# Not satisfactory
print does not have a file= option
cat
?sink
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PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
thanks.
Ritwik.
On 9/30/06, jim holtman [EMAIL PROTECTED] wrote:
try:
sink(y.data)
y
sink()
On 9/30/06, Ritwik Sinha [EMAIL PROTECTED] wrote:
Hi,
I would like to write a list to an ascii file.
I tried the following
y - list(a = 1, b = c(TRUE,FALSE), c = oops)
save(y,
you may also try to levene test. Once again i think it is for a known
change point.
http://finzi.psych.upenn.edu/R/library/car/html/levene.test.html
On 9/30/06, Achim Zeileis [EMAIL PROTECTED] wrote:
On Fri, 29 Sep 2006, Alberto Monteiro wrote:
Is there any heteroskedasticity test in the
Check out ?dput
On 9/30/06, Ritwik Sinha [EMAIL PROTECTED] wrote:
Hi,
I would like to write a list to an ascii file.
I tried the following
y - list(a = 1, b = c(TRUE,FALSE), c = oops)
save(y, file=y.data, ascii=TRUE)
# Not satisfactory
print does not have a file= option
cat cannot
Is there something in R that will display both observed values and their
influence on calculated statistics?
Anupam.
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PLEASE do read the posting guide
As requested:
The alignment problem came from calling format many times. Marc
Schwartz suggested a solution of putting my results in a vector and
then formatting. As I understand it the problem is that fixed-width
fields are only available from sprintf, while comma delineation is
only available
Hello everyone!
I am having some trouble supplying the gradient function to nlm in R for
windows version 2.2.1.
What follows are the R-code I use:
fredcs39-function(a1,b1,b2,x){return(a1+exp(b1+b2*x))}
loglikcs39-function(theta,len){
For the last line you could also consider the print.data.frame method:
data.frame(Symbol = symbols, dolVol = dolVol.pretty)
or
data.frame(row.names = symbols, dolVol = dolVol.pretty)
capture.output or sink could be used if you want to direct it to a file.
On 9/30/06, BBands [EMAIL
Is there a way to set NA values in R, without changing the dataframe? I would
like to use different combinations of non-response values, as if they were NA
for some of the computations. I don't want to change the dataframe each time I
have to do this?
Anupam.
I'm sorry, but I can't follow what you are asking. If you'd like
more help, please provide commented, minimal, self-contained,
reproducible code, as suggested in the posting guide
www.R-project.org/posting-guide.html.
http://www.R-project.org/posting-guide.html Please include a minimal
Would using the subset argument that is available in many functions
(eg lm) achieve what you want?
On 30/09/06, Anupam Tyagi [EMAIL PROTECTED] wrote:
Is there a way to set NA values in R, without changing the dataframe? I would
like to use different combinations of non-response values, as if
Vince:
the implementations for both are different, so this might happen
(although undesirably).
Can you provide me an example with data (off-list)?
David
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PLEASE do
Michael,
I'm also playing with the nls function trying to get it to work
with a Gaussian. My lines that I have at the moment and I hope will help you
are
class(fo - (x ~ (A/(sig*sqrt(2*pi)))* exp(-1*((bin-mu)^2/(2* sig^2)
nls.AB - nls(fo,data=freq.tab, start=
On 9/30/2006 3:31 PM, John C Frain wrote:
I get a similar message when i start Sciviews R console. I do not get the
message when I start R directly or through Tinn-r . If I load the libraries
one by one the message is returned after svViews is loaded. I presume there
is some problem with
Hi,
How do we find out the inner product norm of eigen vectors in R?
Lets say we have eigen vectors :
x1 = 1,2,3 and x2 = 2,-3,4
are there any functions buit in R which directly calculate the inner product
norm of vectors?
Thanks,
Sonal.
[[alternative HTML version deleted]]
Hi all,
Can anyone tell me what the following error message means?
Error in mvt(lower = lower, upper = upper, df = 0, corr = corr, delta = mean,
: NA/NaN/Inf in foreign function call (arg 6)
It was generated when I used the 'pmvnorm' function in the 'mvtnorm' package.
Thanks a lot.
Yonghai
For inner product see ?%*%. There is a norm function in the Matrix package.
On 30/09/06, Sonal Darbari [EMAIL PROTECTED] wrote:
Hi,
How do we find out the inner product norm of eigen vectors in R?
Lets say we have eigen vectors :
x1 = 1,2,3 and x2 = 2,-3,4
are there any functions buit
Reshape version 0.7.1
=
Reshape is an R package for flexibly restructuring and aggregating
data. It's inspired by Excel's pivot tables, and it (hopefully) makes
it very easy to get your data into the shape that you want. You can find out
more at http://had.co.nz/reshape
David Barron [EMAIL PROTECTED] writes:
For inner product see ?%*%. There is a norm function in the Matrix package.
Or crossprod(). Notice that this gives _squared_ norms when applied to
a single vector.
On 30/09/06, Sonal Darbari [EMAIL PROTECTED] wrote:
Hi,
How do we find out the
I have the following sequence of characters. These could be integers as
well. For this problem, only two values are valid.
S S S S S S W W W W W W W W S S S S S S S S W W W W W W W W S S S S S S
S S S S S S S W W W W W W W W W
I need to determine the count of the classes/groups in sequence.
?rle
url:www.econ.uiuc.edu/~rogerRoger Koenker
email [EMAIL PROTECTED] Department of Economics
vox:217-333-4558University of Illinois
fax:217-244-6678Champaign, IL 61820
On Sep 30, 2006,
On 30/09/2006, at 8:00 PM, Rob J Goedman wrote:
Thanks for catching this question. I'd missed Ingo's original email.
Rcmdr does need X.11 and Tcl/Tk, although it uses the versions that
come with Mac OS 10.4. Hence, as Alex indicates, there is no need to
separately install these.
Ingo, if
Here are some timings. From fastest to slowest
we have: #3, #4, #1, #2 so, yes, the apply
approach, even with the improvement (#2), is the
slowest and, in fact, on this test is an order
of magnitude slower than #3 which is the fastest one.
m - matrix(1:4, 200) # test matrix
# 1 - m must
Hi,
I have two lists of matrices, and I would like to get a list of term by
term product, say,
mylist1- list( X1,X2); mylist2-list(Y1,Y2)
Need: mylist3-list(X1%*%Y1,X2%*%Y2)
Is there a way that allows me to do this without loops ?
Thanks a lot.
best
Try:
mapply(%*%, mylist1, mylist2, SIMPLIFY = FALSE)
Please provide self-contained examples as requested on
the last line of every message to r-help. That means the
data for X1, X2, Y1, Y2 should be included so one can
run the code you post.
On 10/1/06, Tong Wang [EMAIL PROTECTED] wrote:
Hi,
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