I just received a virus warning from my e-mail provider, GMX. See the
attached image below.
The virus detection can be spurious - but the e-mail was automatically
deleted by GMX.
With the best regards,
David
__
R-help@r-project.org mailing list -- To
Dear R users and friends,
I would like to ask you about the weird behaviour of a function I just
wrote. This little function should take a vector, find NAs and
substitute them for the mean of the vector, and return the normalized
value of that vector.
I've tried both <- and <<- for changin
Dear R users and R friends,
I have one question I wish to have answered.
I have RKWard installed on Ubuntu (12.04 LTS), and it works like a
charm. The only problem is that the "autocomplete" function is barely
readable.
Here, you see the parameters of "scan()" written in white, on a
sa
Hello,
you will find this helpful:
http://r.789695.n4.nabble.com/Where-is-the-splines-package-td2122794.html
"splines" is now a part of the normal R installation, David Winsemius
says there.
Regards, David
> Hi,
>
> install.packages("splines")
>
> Warning in install.packages :
> packa
Dear R users and R friends,
I have a little problem... I don't know anymore which package to use if
I want to perform a power regression analysis.
To be clear, I want to fit a regression model like this:
fit <- (y ~ a * x ^ b + c)
where a, b and c are coefficients of the model.
The R
Thank you very much for your help, Greg!
Here's my ludicrous vision/attempt/whatever :o)
### Idea for making a density() with confidence interval ###
xx <- faithful$eruptions
xx.hist <- hist(xx, breaks="FD", freq=F)
# plot(xx.hist$mids, xx.hist$density)
# gives a rough "plot(density(xx))" out
Hello R users & R friends,
I just want to ask you if density() can produce a confidence interval,
indicating how "certain" the density() line follows the true frequency
distribution based on the sample you feed into density().
I've heard of loess.predict(loess(y ~ x), se=TRUE) which gives yo
Hello R users,
I am a bit puzzled by the fact that
options(digits=22)
x0 <- 69880
y0 <- 26185
x1 <- 69600
y1 <- 22937
number <- paste(x0,y0,x1,y1,sep="")
number <- as.numeric(travel)
print(number)
gives number in scientific notation (some precision is wasted by having
a "e+19" at the tail
Hi R friends and users,
Just for fun (or concern): I received a R spam mail. Perhaps the first
in history...
Subject: R Courses and Consulting
From: R Training33
R Courses and Consulting
Dear Sir,
We are working on our 2010 R training schedule and would like to know
if you are interest
Dear Achim,
let me thank you for this assurance!
The sample size is too large (~4000 observations per group) to solve
this problem exactly. The error message could maybe be improved, but
the message is clear: This is too large to deal with.
However, this is not a problem. With several thou
Dear R friends,
here I write again about the wilcox.exact() problem. I want to compare two sets
of categorical data, and in one case it says "negative length vectors not
allowed", and in the other one I get the error "cannot allocate vector of
length ...".
On http://rapidshare.com/files/298
Dear R friends,
I want to compare two datasets and I get the message
Error in .Call("cpermdist2", ma = as.integer(m), mb = as.integer(col), :
negative length vectors are not allowed
after specifying the exact test. I'm using the exactRankTests package. Do you
suggest me using the coin lib
Hi everybody - this is an oddball question.
I wonder if anybody has programmed any games in R, such as Sudoku,
Tic-Tac-Toe and the like. Or even a flight simulator...
R mateys! Let's make some t-tests!
Regards, David
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R-help@r-project.org mail
re involved. So unless you are generating
fake data, the random number generator should play no part.
Bill Venables
http://www.cmis.csiro.au/bill.venables/
-Original Message-
From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org] On
Behalf Of David Croll
Sent: Wednesda
Dear colleagues,
I have performed several dozens of glm.nb(response ~ variable) analyses
weeks ago, and when I looked through the results today I saw that many
of the results have quite different intercept values despite the
response part remained the same.
I'm quite sure I did same kind
Thank you, this does the job perfectly!
Regards, David
R> new.df <- data.frame(id,age)
Or, perhaps more automatic:
R> new.df <- do.call(data.frame, sapply(ls(pos=2), as.name))
Is this what you are after?
Cheers,
Berwin
__
R-help@r-proj
Well, I knew that attach() only creates a copy of the variables in the
search path.
What I wanted to ask was how to *retrieve* that copy...
> mat
id age
1 NA NA
2 NA NA
3 NA NA
4 NA NA
5 NA NA
> attach(mat)
> id <<- sample(100,5)
> age <<- rnorm(5,mean=30)
How can I make a new data f
Hello,
suppose I have a data frame:
> mat
id age
1 NA NA
2 NA NA
3 NA NA
4 NA NA
5 NA NA
Then I attach the data frame:
> attach(mat)
I assign some new values...
> id <<- sample(100,5)
> age <<- rnorm(5,mean=30)
Then I want to create a new data frame from the variables id and age which
unction in order to proceed
# with another questionnaire
enter_data()
# stop the function using the "stop" button when you are finished
}
exporting "database" into a CSV or a text file should not be a problem
with write.csv() or write.csv2().
Kind regards,
Da
Hello dear R people!
Several times it occurred to me that a function that uses a variable name as a
parameter would be helpful, but I did not find out how to write such a
function. I have experience in several programming language, but I did not come
across a helpful trick...
What I want to
Hello dear R people,
for my MSc thesis I need to program some functions, and some of them
simply do not work. In the following example, I made sure both vectors
have the same length (10), but R gives me the following error:
Error in if (vector1[i] == vector2[j]) { :
missing value where TRUE
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