Dear all R users,
Thank you Greg for having time in my problem. Your suggestion is working pretty
fine for my problem. But here I am involved for some teaching assignments in a
local school. If at least I could use sliders for changing values, it would be
very fine.
Have anyone any
I learned to do this by studying Alfredo Pontillo and Angelo Mineo's
R-php (http://dssm.unipa.it/R-php). Specifically, look at the file
pages/result/index.php They have done lots of other good stuff in
their project, like filtering dangerous commands - you would not want
to let a user just
when we applied box priece Q statistic in stat library how does it work?
suppose we have series Yt then either it apply on residuals obtained by
regressing
yt on Yt-1 .or apply direct on the series Yt
-
[[alternative HTML version
I am trying to generate survival data using R .Im trying to randomly generate
a column of 1s and 0 and another column randomly generated using an
exponential distribution but l cant seem to get the random function. how do l
go about it
thanks in advance
rt chiruka
Hi,
how can i write a loop that makes algorithm keeps repeating until a solution
is converged?do i use a for loop? i know that we can use for loop to ask for
a number of repetitions, but how to use it to ask the algorithm to keep
repeating until a solution is converged?
I don't know what
Hi Michael,
On Apr 20, 2007, at 12:31 AM, Michael Toews wrote:
Hi all,
I'm usually comfortable using the *apply functions for vectorizing
loops
in R. However, my particular problem now is using it in a sequential
operation, which uses values evaluated in an offset of the loop
vector.
Hi
I am having problems innstalling new packages in R on my vista system.
The error message was
Error in zip.unpack(pkg, tmpDir) : cannot open file 'C:/Program
Files/R/R-2.4.1/library/file195610e4/tree/chtml/tree.chm
When I tried to find a solution to the problem it became clear to me that
I
I am calculating batting averages using the attached code
(dye.02_R_code.doc and giambi.03_R_code.doc) and the attached
data. I've run this code for several players' data but always get the
same results (see attached MLB R CONSOLE.doc). It's obvious that the
results wouldn't be exactly the
Hi,
Does anybody knows how to coerce an mcmc objetct to a rv object without
loose the information about what parameters. was simulated I tried do it but
it looks that this informatio was lost.
Thank you very much for any information.
Gilberto Matos.
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
On Behalf Of raymond chiruka
Sent: Thursday, April 19, 2007 5:23 AM
To: R-help@stat.math.ethz.ch
Subject: Re: [R] Random number generator in R compared
I am trying to generate survival data using R .Im trying to
Soare == Soare Marcian-Alin [EMAIL PROTECTED]
on Fri, 20 Apr 2007 01:32:30 +0200 writes:
Soare Hello Everybody,
Soare How can I filter a dataset?
Have you tried
help(filter)
? filter() is a standard function and mentions others.
Further note that statisticians often talk
Any examples of implementing Anderson-Darling for Gamma Distribution
quickly: that is, getting critical values for different sample sizes
for different values of the Gamma distribution parameters in order to
do the Goodneess of fit test? These appear difficult to get since
Oh, *please* do consult the list archives as the posting guide suggests: I
posted an answer to this earlier this morning, referencing a comprehensive
answer from Sunday.
The problem is a lack of understanding of how Vista security works. You
are using a version of R which predates Vista, so
Charilaos Skiadas wrote:
Hi Michael,
On Apr 20, 2007, at 12:31 AM, Michael Toews wrote:
Hi all,
I'm usually comfortable using the *apply functions for vectorizing
loops
in R. However, my particular problem now is using it in a sequential
operation, which uses values evaluated in an
hello,
I'd like know if it's possible to run R with the options BATCH it means not
interactively
thanks.
___
Découvrez une nouvelle façon d'obtenir des réponses à toutes vos questions !
Profitez des connaissances,
Hello,
I need to extract sequences from an ordered vector.
For example, if
a-c(1,2,3,6,10,11,13)
I need to get the followings 4 vectors
(1,2,3),(6),(10,11),(13)
Thank You
-Bruno
--
Leggi GRATIS le tue mail con il telefonino i-mode di Wind
Hi,
I'd like know if it's possible to run R with the options BATCH it
means not interactively
Yes, you can use the following command-line instruction :
R CMD BATCH your_file.r
You can look at Appendix B of An introduction to R for more infos on
how to invoke R :
Hi,
I need to extract sequences from an ordered vector.
For example, if
a-c(1,2,3,6,10,11,13)
I need to get the followings 4 vectors
(1,2,3),(6),(10,11),(13)
There should be a more elegant way to do it, but the following code
seems to work (it returns the results a s a list) :
Hi there.
I need to exchange some data with a colleague who uses SPSS.
It looks at the moment as if R is limited to exporting a syntax file and a
data file. While I would have no problem with this, there is clearly scope
for confusion and errors on the part of my colleague, who is more used to
Or more elegantly the function below where a and b are the parameters of the
beta prior, xa and xb are the current number of events in group A and B
respectively; na and nb are the current total number of subjects in group A
and B respectively; Na and Nb are the final total number of subject in
Hi Alberto,
I can't call read.xls while Excel is opening the xls file.
R crashes and must be aborted.
Could not reproduce here (Win2000, Excel 2003, R 2.4.1 and
2.5.0.alpha). Who knows... but I cannot think of anything that could
cause such a problem: xlsReadWrite works on the plain file
Please add me to mailing list.
regards
Astha
** See what's free at http://www.aol.com.
[[alternative HTML version deleted]]
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R-help@stat.math.ethz.ch mailing list
hello,
I'd like know how to sort a data frame in R for example how I should do to
sort by Catholic with swiss data frame like below
thanks
Fertility Agriculture Examination Education Catholic
Infant.Mortality
Courtelary80.217.0 1512 9.96
Marco,
I've done something similar with spatial data. I defined the points as
SpatialPoints, the grid as SpatialGrid (using the sp package). Then
table(overlay(grid, points)) will give you the number of points inside
each gridcell.
library(sp)
points - SpatialPoints(your.data.frame)
cellsize - 1
Hi,
I'd like know how to sort a data frame in R for example how I should
do to sort by Catholic with swiss data frame like below
It's in the FAQ :
http://cran.r-project.org/doc/FAQ/R-FAQ.html#How-can-I-sort-the-rows-of-a-data-frame_003f
HTH,
Julien
--
Julien Barnier
Groupe de recherche
Hi
Best function for sorting which i have used and many in the community :-)
HTH Cheers
sort.data.frame(Oats, ~ -nitro + Variety)
Feedback and improvements are welcome.
sort.data.frame - function(form,dat){
# Author: Kevin Wright
# Some ideas from Andy Liaw
#
Hi All R experts
I have data in a two dimensional table. each row of the data adds upto 100
( hence they are percentages ).
it can be interpreted as like this A - I are the matches and P - X are
the players. Thus Player P scored 20% of the runs during this season in
Match C, 60% in Match D
Dear all, Consider this plot
xyplot(Sepal.Length + Sepal.Width ~ Petal.Length | Species,
data = iris, allow.multiple=T, outer=F,
panel = function(x,y,...) {
panel.xyplot(x,y,...)
}
)
I want to *add* some things to each panel and what I want to add involves
Il giorno gio, 19/04/2007 alle 11.43 -0500, hadley wickham ha scritto:
I learned to do this by studying Alfredo Pontillo and Angelo Mineo's
R-php (http://dssm.unipa.it/R-php). Specifically, look at the file
pages/result/index.php They have done lots of other good stuff in
their project,
Hello,
can anybody tell me a easy way to change the mode of an aggregate list to
numeric?
I found a solution but I looks cruel.
Thank's
Felix
PS: In the past you have asked what I am doing. I have to evaluate measures of
two
gauges of our university. The aim is to get an answer which one is
Here is one way of doing it:
a
[1] 1 2 3 6 10 11 13
b - c(FALSE, diff(a) != 1)
cumsum(b)
[1] 0 0 0 1 2 2 3
split(a, cumsum(b))
$`0`
[1] 1 2 3
$`1`
[1] 6
$`2`
[1] 10 11
$`3`
[1] 13
On 4/20/07, Bruno C. [EMAIL PROTECTED] wrote:
Hello,
I need to extract sequences from an ordered
Hello,
I dont know if it works, but try: storage.mode(xxx) = numeric
Alin
2007/4/20, Felix Wave [EMAIL PROTECTED]:
Hello,
can anybody tell me a easy way to change the mode of an aggregate list
to numeric?
I found a solution but I looks cruel.
Thank's
Felix
PS: In the past you have
Dera R users,
I have written a function which computes variance, sd,
r^2, R^2adj etc. But i am not able to return all of
them in return statement.
So how to return more than one variable from
function. In C i used to return by pointers etc. is
there any way like that.
Thanks in advance.
This will take all the numerics in the list and create a matrix:
as.matrix(MEAN[unlist(lapply(MEAN, is.numeric))])
On 4/20/07, Soare Marcian-Alin [EMAIL PROTECTED] wrote:
Hello,
I dont know if it works, but try: storage.mode(xxx) = numeric
Alin
2007/4/20, Felix Wave [EMAIL PROTECTED]:
use a 'list' as the return value containing the values you want returned.
x- function(){
.
list(val1=a, val2=b, val3=c)
}
On 4/20/07, vinod gullu [EMAIL PROTECTED] wrote:
Dera R users,
I have written a function which computes variance, sd,
r^2, R^2adj etc. But i am not able to return all
Hello,
I am writing down a general function to implement the bootstrapF method
for repeated measures anova.
I am passing the function several data frames:
y = dependent
subj = subject identifiers
b = between-subjects factors (number = NB)
w = within-subjects factors (number = NW)
after
This is Windows XP, Excel 2003, R 2.4.1.
Maybe the problem is with Windows XP. I know that it locks some
files, even when I open for reading. For example, if I open 'test.xls'
file, then I can't issue the DOS command 'copy test.xls new_test.xls'.
Thanks for your information. Will test
Dear Ranjan,
If the elements are ordered by rows, then the following should do the trick:
X - diag(p)
X[upper.tri(X, diag=TRUE)] - elements
X - X + t(X) - diag(diag(X))
If they are ordered by columns, substitute lower.tri() for upper.tri().
I hope this helps,
John
Hello R experts
What does this error means and how to resolve this issue (cannot change
value of locked binding for ). Please suggest
mc = MonteCarloOption(dt = 1/360, pathLength = 30, mcSteps = 5000,
mcLoops =
+ 50, init = TRUE, innovations.gen = sobolInnovations, path.gen =
wienerPath,
+
Hi,
I have written a function which computes variance, sd,
r^2, R^2adj etc. But i am not able to return all of
them in return statement.
You can return a vector, or a list.
For example :
func - function() {
...
result - list(variance=3, sd=sqrt(3))
return(result) # you can omit this
With
as.matrix(MEAN[unlist(lapply(MEAN, is.numeric))])
I will get two colums not three and only the last colum are my values
(MEAN[,3]). The first is only a rising number.
I also tried:
MEASURE - sapply( MEAN, as.numeric )
resp.
MEAN - unlist(MEAN)
MEASURE - matrix(MEAN, ncol=3,
Hi Giovanni,
You may want to consider:
Numerical analysis for statisticians (Springer) by Ken Lange. We used
when I was taking a graduate level (MS and PhD students) course in
statistical computing. I really like it and still use it frequently.
Ravi.
Dear all,
This is my problem: I have a table of gene expression data, where 1st column is
gene name, and 2nd -39th columns each are exression data for 38 samples. There
are multiple measurements per sample for each gene, so there are multiple rows
for each gene name. I want to average these
Hello,
I wanted to ask help about importing sas datasets.
1)I tried with some functions as read.ssd (foreign package),
but it doesn't import the file if the length of the
variables' names are longer than 8 bite (it has to conform
to the 6 version).
2)I then tried with the sas.get function
Ranjan and Prof. Fox,
Similar approach can be found in stats:::as.matrix.dist().
Andy
From: John Fox
Dear Ranjan,
If the elements are ordered by rows, then the following
should do the trick:
X - diag(p)
X[upper.tri(X, diag=TRUE)] - elements
X - X + t(X) - diag(diag(X))
With
as.matrix(MEAN[unlist(lapply(MEAN, is.numeric))])
I will get two colums not three and only the last colum are my values
(MEAN[,3]). The first is only a rising number.
I also tried:
MEASURE - sapply( MEAN, as.numeric )
resp.
MEAN - unlist(MEAN)
MEASURE - matrix(MEAN, ncol=3,
I am coming in late in this discussion because I am away from home and
do not read my email regularly. Here are my few cents.
If you are working on Windows and have Excel installed,
an easy way of transferring data between R and Excel is my RExcel
package which ships with Thomas Baier's R(D)COM
Dear Marije,
I think that aggregate() would make your life a lot easier.
aggregate(table.imputed, by = table.imputed[, 1], FUN = mean)
Cheers,
Thierry
ir. Thierry Onkelinx
Instituut voor natuur- en bosonderzoek /
Hello,
unfortunately storage.mode won't run.
storage.mode(MEAN) = numeric
Default in as.double.default(list(Group.1 = c(1, 2, 3, 4, 5, 6, 7, 8, 9, :
(list) Object can't change in 'double'
I also tried:
MEASURE - sapply( MEAN, as.numeric )
But then, the first colum is +1 greater and the
I really like John Monahan's Numerical Methods of Statistics (Cambridge
University Press).
As to running/editing R scripts, you may want to look into JGR. The
built-in editor is not as smart as ESS in some respect, but smarter
than ESS in others. The only thing that keep me from using it
Thanks Stephen and Gabor.
It works like a charm both ways. It took me a minute
or two to find the global command but I definately
like it :) Now to remember to change it on the USB
installation too.
Any idea what the rationale was for setting the option
to TRUE? I can see advantages
You might want to check which of the following scales better for the
size of data you have.
## Make up some data to try.
R dat - data.frame(gene=rep(letters[1:3], each=3), s1=runif(9),
s2=runif(9))
R dat
genes1s2
1a 0.9959172 0.9531052
2a 0.2064497 0.4257022
3a
2. I do most of my work in R using Emacs and ESS. That means that I
keep a file in an emacs window and I submit it to R one line at a
time or one region at a time, making corrections and iterating as
needed. When I am done, I just save the file with the last,
working, correct
On 4/20/2007 9:34 AM, Giovanni Petris wrote:
Dear R-helpers,
I am planning a course on Statistical Computing and Computational
Statistics for the Fall semester, aimed at first year Masters students
in Statistics. Among the topics that I would like to cover are linear
algebra related to
Dear R wizards---I read Brian Ripley's post from 2004 which said that
it was not possible to print to STDERR. Alas, I have more modest
needs. I was wondering if it was possible to just send a string to
STDERR with cat() while in CMD BATCH mode.
Is it not possible to open STDERR in R? (Or does
Do note that I used dat[1] instead of dat[,1] or dat[[1]] as the second
argument to aggregate(): If dat is a data frame, then dat[1] is also a
data frame with only the first column. Since data frame is also a list,
dat[1] is a one-component list.
My guess is that Tierry didn't try his
Hans-Peter wrote:
I can't call read.xls while Excel is opening the xls file.
R crashes and must be aborted.
Could not reproduce here (Win2000, Excel 2003, R 2.4.1 and
2.5.0.alpha). Who knows...
This is Windows XP, Excel 2003, R 2.4.1.
but I cannot think of anything that could
cause
Le Vendredi 20 Avril 2007 07:46, Julien Barnier a écrit :
Hi,
I have written a function which computes variance, sd,
r^2, R^2adj etc. But i am not able to return all of
them in return statement.
You can return a vector, or a list.
For example :
func - function() {
...
result -
Hi,
I need some help understanding the output from PAM. When I look at the output
it doesn't list the cluster number by the median vlaues on each of the
variables (like it does with k-means) Instead I have the following:
So I know for instance cluster 1 has a mean for variable1 of 33.33,
Hello!
I would like to know whether the test of Phillips-Perron, modified for time
series with large negative moving average terms implemented in R.
Besides I would also like to ask the same question about the Leybourne-McCabe
test for stationarity.
Regards, Martin
Giovanni Petris [EMAIL PROTECTED] wrote:
2. I do most of my work in R using Emacs and ESS. That means that I
keep a file in an emacs window and I submit it to R one line at a
time or one region at a time, making corrections and iterating as
needed. When I am done, I just save the
--- John Kane [EMAIL PROTECTED] wrote:
Date: Fri, 20 Apr 2007 10:47:45 -0400 (EDT)
From: John Kane [EMAIL PROTECTED]
Subject: Re: [R] Character coerced to factor and I
cannot get it back
To: jim holtman [EMAIL PROTECTED]
Thanks Jim,
I can live with it as a factor or I will do as you
--- Ravi Varadhan [EMAIL PROTECTED] wrote:
Hi Giovanni,
I have been quite satisfied with Tinn-R
(http://www.sciviews.org/Tinn-R/ ) in a Windows
environment.
It is small fast and I can run both it and R from a
USB if I need a portable setup.
2. I do most of my work in R using Emacs
Hans-Peter wrote:
I added colClasses = double, and now it works - but I lose all
strings, that become NAs (they don't matter - maybe if they matter,
I just have to call read.xls twice). Without colClasses = double,
the numbers become meaningless stuff.
If a scalar colClasses argument is
?list
- Original Message
From: vinod gullu [EMAIL PROTECTED]
To: r-help@stat.math.ethz.ch
Sent: Friday, April 20, 2007 5:00:45 PM
Subject: [R] How to return more than one variable from function
Dera R users,
I have written a function which computes variance, sd,
r^2, R^2adj etc. But i
From: Vincent Goulet
Le Vendredi 20 Avril 2007 07:46, Julien Barnier a écrit :
Hi,
I have written a function which computes variance, sd,
r^2, R^2adj etc. But i am not able to return all of
them in return statement.
You can return a vector, or a list.
For example :
func
Thanks for your help everyone!
I had some trouble with the 'aggregate' function because the 'table.impute[,1]'
was not a list (which the 'by' argument should be), and it took a very very
long time to coerce it into one. But the rowmeans method works almost
instantly! And I have no problems with
Dear R-helpers,
I am planning a course on Statistical Computing and Computational
Statistics for the Fall semester, aimed at first year Masters students
in Statistics. Among the topics that I would like to cover are linear
algebra related to least squares calculations, optimization and
Suppose we have the time series y
When I regress this series on its first lag then I use the following command
in dynlm as
r=dynlm( y~L(y,1))
if I put the command of summary of above regression model then by the command
summary (r )
I will get the following out put elements
Please ignore the last test case. I thought I had saved it, but
I hadn't, sheet = 2 was empty. Now it works.
Alberto Monteiro
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https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide
--- [EMAIL PROTECTED] wrote:
Please add me to mailing list.
regards
Astha
I think you need to go here to subscribe
https://stat.ethz.ch/mailman/listinfo/r-help
__
R-help@stat.math.ethz.ch mailing list
dear all,
I get internet via a proxy server when I try to
downlaod package it always fail. Even when i add and
environnment variable for the http proxy server. I use
windows XP SP2
Sincerly
Justin BEM
Elève Ingénieur Statisticien Economiste
BP 294 Yaoundé.
Tél (00237)9597295.
see ?unlist
--- Soare Marcian-Alin [EMAIL PROTECTED] a écrit :
Hello,
I dont know if it works, but try: storage.mode(xxx)
= numeric
Alin
2007/4/20, Felix Wave [EMAIL PROTECTED]:
Hello,
can anybody tell me a easy way to change the mode
of an aggregate list
to numeric?
I
Try this for now (a combination of my previous answer and the example from the
tkrplot help page):
library(tkrplot)
library(TeachingDemos)
tkcurve - function(expr, from, to, ...){
tt - tktoplevel()
myx - from
myfun - function(){
curve(expr, from, to, ...)
tmp1 - cnvrt.coords(0,0,
You've asked the almost identical question yesterday.
{that *de*creases the probability of getting help in some cases!}
If you take a little effort and follow the posting guide
(keywords reproducible example; not using HTML in e-mails),
I (and many others) gladly will help you further.
ivo welch wrote:
Dear R wizards---I read Brian Ripley's post from 2004 which said that
it was not possible to print to STDERR. Alas, I have more modest
needs. I was wondering if it was possible to just send a string to
STDERR with cat() while in CMD BATCH mode.
Is it not possible to open
Dear list,
I have been trying to use coxme in R 2.3.1.
When I use coxme in the following data sim.fr1, i get
Warning messages: using 'as.environment(NULL)' is
deprecated
Why does it occur?
How can I hide such warning message,
especially when coxme is under a loop?
Mohammad Ehsanul Karim
On Fri, 20 Apr 2007, Peter Dalgaard wrote:
ivo welch wrote:
Dear R wizards---I read Brian Ripley's post from 2004 which said that
it was not possible to print to STDERR. Alas, I have more modest
needs. I was wondering if it was possible to just send a string to
STDERR with cat() while in
On Fri, 2007-04-20 at 16:02 +0200, ONKELINX, Thierry wrote:
While I am looking for simple and effective solutions that do not
require installing emacs in our computer lab, the answer you
should teach your students emacs/ess on top of R is perfecly
acceptable.
Søren Højsgaard said the following on 4/20/2007 3:57 AM:
Dear all, Consider this plot
xyplot(Sepal.Length + Sepal.Width ~ Petal.Length | Species,
data = iris, allow.multiple=T, outer=F,
panel = function(x,y,...) {
panel.xyplot(x,y,...)
}
)
I
Try:
options(warn=-1)
To restore:
options(warn=1)
--
Henrique Dallazuanna
Curitiba-Paraná-Brasil
25° 25' 40 S 49° 16' 22
Ohttp://maps.google.com/maps?f=qhl=enq=Curitiba,+Brazillayer=ie=UTF8z=18ll=-25.448315,-49.276916spn=0.002054,0.005407t=kom=1
On 4/20/07, Mohammad Ehsanul Karim [EMAIL
The question is not reproducable, therefore useless. Perhaps you are forgetting
what a medoid is when you expect a mean?
HTH,
Ranjan
On Fri, 20 Apr 2007 17:09:09 +0200 (CEST) nathaniel Grey [EMAIL PROTECTED]
wrote:
Hi,
I need some help understanding the output from PAM. When I look at
Hi -
I have a data frame with a large number of observations (62,000 rows,
but only 2 columns - a character ID and a result list).
Sample:
my.df - data.frame(id=c(ID1, ID2, ID3), result=1:3)
my.df
id result
1 ID1 1
2 ID2 2
3 ID3 3
I have a list of ID vectors. This
See rw-FAQ Q2.19, and of course the posting guide.
Claiming 'it always fail' does not help us help you, but blaming your
tools in this way could be considered discourteous (or worse).
On Fri, 20 Apr 2007, justin bem wrote:
dear all,
I get internet via a proxy server when I try to
downlaod
Dear all,
I have a question about limmaGUI that is usually run in R environment.
My problem is loading data into the programm. I have 6 gpr files that
apparently are not compatible with limma. Everytime I'm trying to load
the data (including a RNA targets file, an error appears:Error
Did you have a look at the posting guide?
We have to guess that you are using some version of fOptions in some
version of R under some OS, and that you run code from the examples
section of ?MonteCarloOption relying on other code from that section
which is not mentioned at all. Given that these
R-Helpers:
I would like to perform sample size calculations for an experiment. As
part of this process, I would like to know how various assumptions
affect the sample size calculation. For instance, one thing that I
would like to know is how the calculated sample size changes as I vary
the
Prof Brian Ripley wrote:
On Fri, 20 Apr 2007, Peter Dalgaard wrote:
ivo welch wrote:
Dear R wizards---I read Brian Ripley's post from 2004 which said that
it was not possible to print to STDERR. Alas, I have more modest
needs. I was wondering if it was possible to just send a
This is what I just tried (thanks, Dirk!):
Start R and then Sys.putenv(http_proxy, whatever),
options(download.file.method=wget) doesn't work.
Open up a command prompt, define http_proxy there, then run Rgui. Set
options(download.file.method=wget). This works.
Perhaps you can define
thank you, peter and brian. I had not found the stderr() function.
(I had looked at the R Input/Output guide.) This is great. regards,
/ivo
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PLEASE do read the
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
On Behalf Of [EMAIL PROTECTED]
Sent: Friday, April 20, 2007 6:36 AM
To: r-help@stat.math.ethz.ch
Subject: [R] importing sas datasets
Hello,
I wanted to ask help about importing sas datasets.
1)I tried with
Just one caveat. I personally would try to avoid using
global options since it can cause conflicts when
two different programs assume two different settings
of the same global option and need to interact.
On 4/20/07, John Kane [EMAIL PROTECTED] wrote:
Thanks Stephen and Gabor.
It works like a
Inman, Brant A. M.D. wrote:
R-Helpers:
I would like to perform sample size calculations for an experiment. As
part of this process, I would like to know how various assumptions
affect the sample size calculation. For instance, one thing that I
would like to know is how the calculated
Here's a solution which uses diff() and apply.
findSequences - function(Data){
# Sort the vector in case it hasn't been sorted
Data - sort(Data)
# Check that there are no duplicate values in Data
if(any(duplicated(Data))) stop(Function with not work if Data
argument contains
Hi Phil -
Sadly, although your syntax is certainly a lot cleaner and more elegant
than mine, the elapsed time is about the same. 5 minutes may have been
an exaggeration, but we are looking at a timescale of minutes, where the
C# hashtable method was under a second.
I have a feeling the
On 4/20/07, Sundar Dorai-Raj [EMAIL PROTECTED] wrote:
Søren Højsgaard said the following on 4/20/2007 3:57 AM:
Dear all, Consider this plot
xyplot(Sepal.Length + Sepal.Width ~ Petal.Length | Species,
data = iris, allow.multiple=T, outer=F,
panel = function(x,y,...) {
Chuck Cleland and Steve Weigand both pointed out my mistake in the
loop...trying to assign a list (i.e. the output from power.t.test) to a
cell in a data.frame.
Thanks guys.
Brant
__
R-help@stat.math.ethz.ch mailing list
On 4/20/07, Iestyn Lewis [EMAIL PROTECTED] wrote:
Hi -
I have a data frame with a large number of observations (62,000 rows,
but only 2 columns - a character ID and a result list).
Sample:
my.df - data.frame(id=c(ID1, ID2, ID3), result=1:3)
my.df
id result
1 ID1 1
2 ID2
Deepayan Sarkar said the following on 4/20/2007 11:42 AM:
On 4/20/07, Sundar Dorai-Raj [EMAIL PROTECTED] wrote:
Søren Højsgaard said the following on 4/20/2007 3:57 AM:
Dear all, Consider this plot
xyplot(Sepal.Length + Sepal.Width ~ Petal.Length | Species,
data = iris,
Dear List,
In documents (Therneau, 2003 : On mixed-effect cox
models, ...), as far as I came to know, coxme penalize
the partial likelihood (Ripatti, Palmgren, 2000) where
as frailtyPenal (in frailtypack package) uses the
penalized the full likelihood approach (Rondeau et al,
2003).
How, then,
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