Hi,
have a look at the packages distr and distrSim which are on CRAN.
hth
Matthias
- original Nachricht
Betreff: [R] Generic code for simulating from a distribution.
Gesendet: Mo, 10. Apr 2006
Von: [EMAIL PROTECTED]
Hello all,
I have the code below to simulate samples of
You need ls(all=TRUE) as some (12) are 'dot-names'. I just used
foo - ls(package:base, all =TRUE)
pr - foo[sapply(foo, function(x) is.primitive(get(x, package:base)))]
and got 152.
There is a description in the `Writing R Extensions' manual, but it is
incomplete, and another classified list
Hi, I am writing a function that includes 'sum' function
such as:
f-function(x){
c-c(-1,0,1)
f-sum(c+x)
}
expecting f to be -1+x+0+x+1+x=3x. But I found out that f is
sum(x). So, f is always a scalar, which means that f(c(0,1))
is not a vector as c(0,3), but 3(0+1)=3. I would like to ask
you
DylanB == Dylan Beaudette [EMAIL PROTECTED]
on Sun, 9 Apr 2006 19:28:44 -0700 writes:
DylanB Greetings, I have had good success using the clara()
DylanB function to perform a simple cluster analysis on a
DylanB large dataset (1 million+ records with 9 variables).
DylanB
On Saturday 08 April 2006 11:51, Chelsea Ellis wrote:
Hi,
I'm trying to use the svm function in R, but I can't find the e1071
package. When I type library(e1071), I get the error message that the
package doesn't exist. I've searched all over the CRAN website, but I
can't find anything. Did
I have just started using R and am stumped over something:
I am using the lme4 package, using lmer (and putting it in to fit0.lmer
) and then I do an anova,
but I am not getting the full table. This is what I get:
fit0.lmer - lmer(subj.prob.rev ~ semantic.class + bipron.rec +
item.order +
Dear R users
a problem I encountered while installing fMultivar, I would appriciate any
help with this.
install.packages (fMultivar, dependencies=TRUE)
Warning in install.packages(fMultivar, dependencies = TRUE) :
argument 'lib' is missing: using /usr/local/lib/R/site-library
marilyn ford m.ford at griffith.edu.au writes:
I have just started using R and am stumped over something:
I am using the lme4 package, using lmer (and putting it in to fit0.lmer
) and then I do an anova,
but I am not getting the full table. This is what I get:
fit0.lmer -
Katherine A Grieve grieve at u.washington.edu writes:
I am wondering how to obtain SE estimates for fixed effects from a nonlinear
mixed effects model?
It's a bit of fiddling, but there is an example coming close to what you want
on page 373 of Pinheiro/Bates, and in file
On Sun, 9 Apr 2006, Ross Darnell wrote:
R^2 for a model is usually defined as 1-RSS/TSS where TSS is the SS
about the mean and RSS is the residual SS from the model.
Not when there is no intercept or where there is an offset in the model.
Consider the model in R
z - runif(20)
y -
skim033 at student.ucr.edu writes:
Hi, I am writing a function that includes 'sum' function
such as:
f-function(x){
c-c(-1,0,1)
f-sum(c+x)
}
expecting f to be -1+x+0+x+1+x=3x. But I found out that f is
sum(x). So, f is always a scalar, which means that f(c(0,1))
is not a vector as
Dear Rs
I have a 3x3 multiple plot. I would like to have a overall legend in
the outer right margin.
From the help archive, I found that it can be done by setting
par(xpd=NA). However, I couldn't find the correct values
for x and y co-ordinates for the legend. Please find the code snippet below:
Hi!
Is there a way of handling NA´s in the matrix multiplication function
'%*%'? I cant find anything concerning this in the help files. I´m thinking
of some sort of setting such as na.rm=T.
Thanks before hand to anyone how can help me!
Fredrik Thuring, Junior Business Researcher
Hello,
I am using the R function glmmPQL to fit a logistic GLMM, with weights.
I am finding that I get fairly different parameter estimates in glmmPQL
from fitting the full dataset (with no weight statement) and an
equivalent, shorter dataset with the weights statement. I am using the
weights
I think it is simply, but I cannot find the method to figure out skewness.
Thanks!
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PLEASE do read the posting guide!
RSiteSearch(skewness)
On 4/10/06, Jian Zhang [EMAIL PROTECTED] wrote:
I think it is simply, but I cannot find the method to figure out skewness.
Thanks!
[[alternative HTML version deleted]]
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R-help@stat.math.ethz.ch mailing list
you can transform the variable x down the ladder if it is positive
skew (x^0.5,x^ -1...)and up the ladder if x is negative skew ( etc,
x^2 ,x^3...).
The book An R and S-PLUS Companion To Applied Regression has a
section to deal with the data transformation.Especiall P109 is about
transformation
Dear R users,
I was just wondering, if anybody has a simple solution to the following
problem:
I have just installed R 2.2.1 next to R 2.1.1 (in different folder, of
course) (but the versions do not really matter) on WinXP.
I have different R projects in different folders and in each folder, I
Prasanna wrote:
Dear Rs
I have a 3x3 multiple plot. I would like to have a overall legend in
the outer right margin.
From the help archive, I found that it can be done by setting
par(xpd=NA). However, I couldn't find the correct values
for x and y co-ordinates for the legend. Please find
If you are using XP then create a shortcut to Rgui.bat, which
can be found in:
http://cran.r-project.org/contrib/extra/batchfiles/
0.2-7 is the most recent. When you install R it saves in the registry
the R version and Rgui.bat looks that up and runs that version thereby
giving you the last
Uwe Ligges ligges at statistik.uni-dortmund.de writes:
You get the user coordinates of the plotting region by
par(usr)
Now simply make the legend right of that plotting region, e.g. with
x corrdinates at
par(usr)[2] + epsilon
and y coordinates at
mean(par(usr)[3:4])
I always
R-users:
My problem: the package fdim (which measures fractal dimensions of
datasets) apparently prefers 3-D (XYZ) datasets. I'm trying to
measure the information dimension (a type of fractal dimension) of a
2-D (XY) dataset.
Here's some examples of the preferred 3-D data (XYZ):
Is there a multicomp() function in R as in S plus?
Thanks ../Murli
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R-help@stat.math.ethz.ch mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
Dear R-help,
I have been trying to use the TukeyHSDs function in the pgirmess
package to quickly extract all
significant pairwise comparisons in an aov object. However, it seems
that this function isn't working
as intended when only the two last populations means being tested are
significant.
Hi list,
I'm looking for a way to easily extract regression p-values and export
them to one file for further evaluation.
Here is the problem.
I use lm() and step() to get my regression parameters/coefficients.
after that I can extract them with summary(lm-results)$coefficients[,4]
so far so
List,
I am trying to apply some digital signal analysis methods to IPv4 networks.
Specifically, I have had some success using the Fast Fourier Transform in R to
find periodic events in IPv4 network traffic by producing periodograms. I
store network traffic in a mysql database so I have
## simulated data...
x - runif(100)
y - rnorm(100)
## spline fit...
m - gam(y~s(x,k=6,fx=TRUE))
## trapezoidal integration ...
n - 1000 ## number of points in trap. approx
pd - data.frame(x=seq(0,1,length=n))
dx - pd$x[2]-pd$x[1]
f - predict.gam(m,pd)
w - rep(dx,n);w[1]-w[n] - w[2]/2 ##
A basic implementation of this is the dots function in the
TeachingDemos package.
--
Gregory (Greg) L. Snow Ph.D.
Statistical Data Center
Intermountain Healthcare
[EMAIL PROTECTED]
(801) 408-8111
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of
I have looked at that example on p. 373, however it still does not help me to
get the stand errors i need. In my case, with the 18 different groups, I am
combining more than just the (intercept) term with one other row in the Summary
tTable. It is no problem to form linear combinations of the
I am getting the following error message using the lmer function for mixed
models with method=Laplace:
nlminb returned message false convergence (8) in: LMEopt(x=mer,value=cv)
Could anyone explain what this means, and how I might overcome (or track
down) the problem?
Bill Shipley
The cnvrt.coords function in the TeachingDemos package may be of help.
Here is an example of possible use (just change the .9 and .7 to where
ever on the page you want the legend):
par(mfrow=c(3,3), mar=c(4,4,0.9,0.5), oma=c(1,2,2,4),cex.main=1.1)
for (i in 1:9){
x - runif(25,1,10)
Hi Katie,
maybe the easiest solution is to create a new factor that corresponds to
the combinations of the three factors A, B and C. A quick and dirty way
to create such a factor is:
ABC - factor(paste(A, x, B, x, C, sep = ))
ABC
and then fit the model using the variable ABC instead of A*B*C.
Can someone, please, help explain to me why the following two calls
return the same set:
seq(from=as.POSIXlt('2005-12-4'), to=as.POSIXlt('2006-4-2'), by='weeks')
[1] 2005-12-04 EST 2005-12-11 EST 2005-12-18 EST 2005-12-25 EST
[5] 2006-01-01 EST 2006-01-08 EST 2006-01-15 EST 2006-01-22 EST
Its undoubtedly a timezone or daylight savings time issue. Use this
instead:
seq(from=as.Date('2005-12-4'), to=as.Date('2006-4-9'), by='weeks')
[1] 2005-12-04 2005-12-11 2005-12-18 2005-12-25 2006-01-01
[6] 2006-01-08 2006-01-15 2006-01-22 2006-01-29 2006-02-05
[11] 2006-02-12 2006-02-19
On Mon, 10 Apr 2006, Omar Lakkis wrote:
Can someone, please, help explain to me why the following two calls
return the same set:
seq(from=as.POSIXlt('2005-12-4'), to=as.POSIXlt('2006-4-2'), by='weeks')
[1] 2005-12-04 EST 2005-12-11 EST 2005-12-18 EST 2005-12-25 EST
[5] 2006-01-01 EST
Hello,
Can anybody help me understand the difference between the three different codes
in specifying the slope in the random part of a mixed model using LMER?
Here are the codes:
(age | id)
(1 + age | id)
(age - 1 | id)
Thank you in advance
Arnaud
Rune Vejen Petersen wrote:
Dear R-help,
I have been trying to use the TukeyHSDs function in the pgirmess
package to quickly extract all
significant pairwise comparisons in an aov object. However, it seems
that this function isn't working
as intended when only the two last populations
Dear all,
I am trying to write a data frame / table to a latex table using
xtable. The thing is that I do not want to write the row names as not
all rows will be named.
I have tried writing both a matrix (setting e.g. rownames(mat) -
c(a, , ))
and a dataframe (setting row.names to a similar
Hi all,
I have a dataset in which the output Y is observed on two groups of
patients (treatment factor T with 2 levels).
Every subject in each group is observed three times (not time points but
just technical replication).
I am interested in estimating the treatment effect and take into account
I use POSIXct for datetimes. Is thee a timeAlign function that I can
use where :
align by year
direction -1 == start of this year
direction 1 == start of next year
align by week
direction -1 == date on last sunday
direction 1 == date on next sunday
align by day
Thanks for the reply.
On Sunday 09 April 2006 11:46 pm, Martin Maechler wrote:
DylanB == Dylan Beaudette [EMAIL PROTECTED]
on Sun, 9 Apr 2006 19:28:44 -0700 writes:
DylanB Greetings, I have had good success using the clara()
DylanB function to perform a simple cluster analysis
Dear R-help Listers,
I am curious if there is some (hopefully easy) way to change the number of
characters that can be converted to a single string via any of deparse,
as.character or toString. It seems that the limit is 500 for all of
these. I saw a previous post where Prof. Ripley suggested
Hi Folks,
I sent this message before but I don't think it got through because I
wasn't registered.
I've been trying for several weeks to install R-2.2.1 on a PC with an
AMD Athlon 64 2800*+* processor running Mandriva 2006_64.
After unpacking R-2.2.1.tar.gz I ran ./configure However, configure
1) I know how to post to the list. You simply send an e-mail to
[EMAIL PROTECTED] But how do you read the items and respond to them?
I usually read the items at
http://tolstoy.newcastle.edu.au/R/help/06/04/index.html#end and then have to
jump through some hoops to answer back.
Is there any way to
Try this.
dd - Sys.time() # test data
lt - as.POSIXlt(dd)
ISOdate(1900+lt$year, 1, 1, 0, tz = )
ISOdate(1901+lt$year, 1, 1, 0, tz = )
seq(now, length = 2, by = paste(-, lt$wday, day, sep =))[2]
seq(now, length = 2, by = paste(7-lt$wday, day))[2]
with(lt, ISOdate(1901+year, mon, mday, 0, tz
On 4/10/06, Farrel Buchinsky [EMAIL PROTECTED] wrote:
1) I know how to post to the list. You simply send an e-mail to
[EMAIL PROTECTED] But how do you read the items and respond to them?
I usually read the items at
http://tolstoy.newcastle.edu.au/R/help/06/04/index.html#end and then have to
On 4/10/06, Gabor Grothendieck [EMAIL PROTECTED] wrote:
Try this.
dd - Sys.time() # test data
lt - as.POSIXlt(dd)
ISOdate(1900+lt$year, 1, 1, 0, tz = )
ISOdate(1901+lt$year, 1, 1, 0, tz = )
seq(now, length = 2, by = paste(-, lt$wday, day, sep =))[2]
seq(now, length = 2, by =
Perhaps someone will have a solution to my more general problem, but
here is the specific one:
I used the round() function to round some estimates to 3 decimal
places. I then sent put the rounded estimates in a matrix and used
latex() to make a LaTeX table from them. However, in my table, there
Try:
sprintf((%.2f), pi)
[1] (3.14)
On 4/11/06, Brian Quinif [EMAIL PROTECTED] wrote:
Perhaps someone will have a solution to my more general problem, but
here is the specific one:
I used the round() function to round some estimates to 3 decimal
places. I then sent put the rounded
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