Displaying 20 results from an estimated 2000 matches similar to: "Question about linear mixed effects model (nlme)"
2008 Oct 15
2
Network meta-analysis, varConstPower in nlme
Dear Thomas Lumley, and R-help list members,
I have read your article "Network meta-analysis for indirect treatment
comparisons" (Statist Med, 2002) with great interest. I found it very
helpful that you included the R code to replicate your analysis;
however, I have had a problem replicating your example and wondered if
you are able to give me a hint. When I use the code from the
2010 Sep 16
1
Help for an absolutely r-noob
Hello together,
I am an absolute noob in R and therefore I need help urgently. I have
received a script from my tutor with plot functions in it. However, I can'
manage to adapt these plots.
The hole script is as follows:
setwd("E:/")
##### (1) Read data ###
dat <- read.table("Komfort_Tatsaechliche_ID_Versuchsreihe_1.txt",
header=TRUE,
sep="\t",
2015 Apr 06
2
mge-shut driver fails almost after every reboot
Hello Arno,
Can apply the patch directly or should I recompile nut?
Best regards,
Panagiotis
On 3/4/2015 5:06 ??, Arnaud Quette wrote:
> Hello Panagiotis
>
> 2015-04-03 14:28 GMT+02:00 Panagiotis Kritikakos
> <panagiotis.kritikakos at nikitec.gr
> <mailto:panagiotis.kritikakos at nikitec.gr>>:
>
> Hello Arno,
>
> Question: have you also
2015 Apr 08
1
mge-shut driver fails almost after every reboot
Hello Arno,
FreeNAS doesn't come with a compiler and I had to compile with the patch
on FreebBSD-9.3 and then copy the produced mge-shut. Unfortunately it
didn't work out. For every try I was getting "Connection Refused" and
when I tried /usr/local/libexec/nut/mge-shut -D -a <ups_name> I was
always getting 'No matching HID UPS found'.
I returned back to the
2001 Dec 23
1
aov for mixed model (fixed and random)?
I'm starting to understand fixed and random effects, but I'm
puzzled a bit. Here is an example from Hays's textbook (which is
great at explaining fixed vs. random effects, at least to dummies
like me), from the section on mixed models. You need
library(nlme) in order to run it.
------
task <- gl(3,2,36) # Three tasks, a fixed effect.
subj <- gl(6,6,36) # Six subjects, a random
2015 Apr 02
2
mge-shut driver fails almost after every reboot
Hello Arno,
Thanks for the quick reply. FreeNAS is FreeBSD-based.
Yes, I could test a patch.
As I have mentioned, this behavior is not seen at every single reboot
but after most reboots. Also, some times, the connectivity can be lost
without even rebooting. That is not very often can have happened a few
times.
Best regards,
Panagiotis
On 2/4/2015 5:44 ??, Arnaud Quette wrote:
> Hello
2005 Jul 18
1
Nested ANOVA with a random nested factor (how to use the lme function?)
Hi,
I am having trouble using the lme function to perform a nested ANOVA
with a random nested factor.
My design is as follows:
Location (n=6) (Random)
Site nested within each Location (n=12) (2 Sites nested within each
Location) (Random)
Dependent variable: sp (species abundance)
By using the aov function I can generate a nested ANOVA, however this
assumes that my nested
2013 Feb 11
3
Installing FreeBSD 9.1 amd64 on IBM x3550 M3
Hello,
I'm trying to install FreeBSD 9.1 amd64 on an IBM x3550 M3 server.
Installation went smoothly, RAID controller and network cards were
successfully recognised.
But, after the installation, the server fails to boot from disk.
There were some posts, about two years ago, in this list implying
that the problem lies in UEFI but I couldn't find any clear
solution.
Any suggestions would
2007 Nov 01
2
F distribution from lme()?
Dear all,
Using the data set and code below, I am interested in modelling how egg
temperature (egg.temp)
is related to energy expenditure (kjday) and clutch size (treat) in
incubating birds using the
lme-function. I wish to generate the F-distribution for my model, and have
tried to do so using
the anova()-function. However, in the resulting anova-table, the parameter
kjday has gone from
being
2006 Sep 29
2
Binary updates for SA-06:23?
Is it just me, or freebsd-update isn't yet shipping the openssl updates?
I'm trying (on an SMP machine) to fetch them, but there seem to be none
available. I'd like to confirm that sleep deprivation isn't the culprit
here, so I've checked in /usr/local/freebsd-update/work/ and the
subdirectory with the highest number contains the SA-06:21 files.
Anyone seen that clue bat
2007 Jun 28
2
aov and lme differ with interaction in oats example of MASS?
Dear R-Community!
The example "oats" in MASS (2nd edition, 10.3, p.309) is calculated for aov and lme without interaction term and the results are the same.
But I have problems to reproduce the example aov with interaction in MASS (10.2, p.301) with lme. Here the script:
library(MASS)
library(nlme)
options(contrasts = c("contr.treatment", "contr.poly"))
# aov: Y ~
2009 Apr 01
3
How to prevent inclusion of intercept in lme with interaction
Dear friends of lme,
After so many year with lme, I feel ashamed that I cannot get this to work.
Maybe it's a syntax problem, but possibly a lack of understanding.
We have growth curves of new dental bone that can well be modeled by a
linear growth curve, for two different treatments and several subjects as
random parameter. By definition, newbone is zero at t=0, so I tried to force
the
2015 Apr 03
2
mge-shut driver fails almost after every reboot
Hello Arno,
> Question: have you also tested oldmge-shut?
> Otherwise, that might be interesting to do so and send back the
> results of these tests...
Yes, I've tried this as well with worse results unfortunately. This
driver seems to be even more unstable. When it gets able to set
communication with the UPS (which is not always the case), it usually
lost it again after a while.
2003 Apr 08
2
Basic LME
Hello R Users,
I am investigating the basic use of the LME function, using the following example;
Response is Weight, covariate is Age, random factor is Genotype
model.lme <- lme (Weight~Age, random=~ 1|Genotype)
After summary(model.lme), I find that the estimate of Age is 0.098 with p=0.758.
I am comparing the above model with the AOV function;
model.aov <- aov (Weight~Age + Genotype)
2005 Sep 19
1
How to mimic pdMat of lme under lmer?
Dear members,
I would like to switch from nlme to lme4 and try to translate some of my
models that worked fine with lme.
I have problems with the pdMat classes.
Below a toy dataset with a fixed effect F and a random effect R. I gave
also 2 similar lme models.
The one containing pdLogChol (lme1) is easy to translate (as it is an
explicit notation of the default model)
The more parsimonious
2004 Jun 11
2
lme newbie question
Hi
I try to implement a simple 2-factorial repeated-measure anova in the
lme framework and would be grateful for a short feedback
-my dependent var is a reaction-time (rt),
-as dependent var I have
-the age-group (0/1) the subject belongs to (so this is a
between-subject factor), and
-two WITHIN experimental conditions, one (angle) having 5, the other
3 (hands) factor-levels;
2010 Nov 11
1
gmp package installation on CentOS 5.2
Hello,
Last year, I installed CentOS 5.2 on an HP Proliant Server. Along with other packages, the gmp and gmp-devel version 4.1.4 packages were installed. To the best of my knowledge these packages do not come from the gmp team.
Recently, I built an rpm package for gmp 5.0.1 for CentOS 5.2. I tried to update the gmp package by command
rpm -Uvh gmp-5.0.1-1.x86_64.rpm
but the update failed
2012 Sep 14
1
linear mixed-effects models with two random variables?
Dear R users,
Does anyone knows how to run a glmm with one fixed factor and 2 random
numeric variables (indices)? Is there any way to force in the model a
separate interaction of those random variables with the fixed one?
I hope you can help me.
#eg.
Reserve <- rep(c("In","Out"), 100)
fReserve <- factor(Reserve)
DivBoulders <- rep
2006 Nov 29
1
Extract some character from a character vector of length 1
the content of th character vector (of length 1) is as follows:
a <- "something2 ....pat1 name1 pat2 something2....pat1 name2
pat2....pat1 name3 pat2 "
I would like to extract the character bewteen pat1 and pat2. That's to
say, I would like to get a vecter of c("name1", "name2","name3").
What I did is use strsplit() twise. But I wonder if there
2003 May 14
2
number of patients in a hospital on a given date
Dear R-users!
I am using R 1.7.0, under Windows XP.
Having some hospital discharge data (admission date and discharge date for
each patient), I want to get the number of patients in the hospital on a
given date.
My data look like (simple example):
> x <- data.frame(patid=c("pat1", "pat2"), adm.date = c("15.03.2002",
"16.03.2002"),