similar to: prediction intervals from a mixed-effects models?

Displaying 20 results from an estimated 600 matches similar to: "prediction intervals from a mixed-effects models?"

2008 Jul 18
2
column wise paste of data.frames
Hi everybody! I'm sure that I overlook something and feel quite stupid to ask, but I have not found an easy solution to the following problem: Take e.g. the Orthodont data from the nlme package: > head(Orthodont) Grouped Data: distance ~ age | Subject distance age Subject Sex 1 26.0 8 M01 Male 2 25.0 10 M01 Male 3 29.0 12 M01 Male 4 31.0 14 M01 Male
2006 May 30
0
(PR#8905) Recommended package nlme: bug in predict.lme when an independent variable is a polynomial
Many thanks for your very useful comments and suggestions. Renaud 2006/5/30, Prof Brian Ripley <ripley at stats.ox.ac.uk>: > On Tue, 30 May 2006, Prof Brian Ripley wrote: > > > This is not really a bug. See > > > > http://developer.r-project.org/model-fitting-functions.txt > > > > for how this is handled in other packages. All model-fitting in R used =
2010 Oct 18
1
Question about lme (mixed effects regression)
Hello! If I run this example: library(nlme) fm1 <- lme(distance ~ age+Sex, Orthodont, random = ~ age + Sex| Subject) If I run: summary(fm1) then I can see the fixed effects for age and sex (17.7 for intercept, 0.66 for age, and -1.66 for SexFemale) If I run: ranef(fm1) Then it looks like it's producing the random effects for each subgroup (in this example - each subject). For example,
2005 Jun 08
0
bug in predict.lme?
Dear All, I've come across a problem in predict.lme. Assigning a model formula to a variable and then using this variable in lme (instead of typing the formula into the formula part of lme) works as expect. However, when performing a predict on the fitted model I gan an error messag - predict.lme (but not predictlm) seems to expect a 'properly' typed in formula and a cannot extract
2011 Jan 17
2
matrix manipulations
Hi, I am having some difficulties with matrix operations. It is a little hard to explain it so please bear with me. I have a very large data set, large enough that it needs to be split in parts in order to deal with. I can work things on these "parts" but the problem lies in adding together these parts for the final answer. So that been said, let's say that i split the data in 2
2020 Aug 06
1
Domain admin has no access to C:\Windows\system32\rundll32.exe
FreeBSd-12.1p7 Samba-4.10.15 Windows 10 Pro I have added a windows laptop to the test domain using the domain administrator account. I have logged on to the domain using the domain administrator account. When I attempt to open the Settings->Personalization -> Desktop icon settings I get this error: C:\Windows\system32\rundll32.exe (File version 10.0.18362.1) Windows cannot access the
2011 Jul 20
1
grouping data
All the examples in 'nlme' are in "Grouped Data: distance ~ age | Subject" format. How do I "group" my data in "dolf" the same way the data "Orthodont" are grouped. > show(dolf) distance age Subjectt Sex 1 6.83679 22.01 F1 F 2 6.63245 23.04 F1 F 3 11.58730 39.26 M2 M > show(Orthodont) Grouped Data:
2010 Oct 25
1
Panel regression
Hi, I am trying to run a panel regression where I have a matrix of observations and a matrix of independant variables - examples would trying to predict countries's GDP with their data on education, FDI, tax rates, over time. For the purpose of simplicity, my data would be: dep = matrix(rnorm(50),ncol=5) indep1 = matrix(rnorm(50),ncol=5) indep2 = matrix(rnorm(50),ncol=5) >From what I
2005 Sep 19
1
rsync and HP11.11 problem
Hi All, I am trying to run rsync from HP11.00 machine (source) to HP11.11 machine, as test for migration plan. The data on the source is not changing since it is snapshot of active data. Every time we try to run the following command: timex rsync -avuz --delete isynh09:/snap We get the following error: receiving file list ... done mknod
2019 Sep 11
2
'==' operator: inconsistency in data.frame(...) == NULL
Sorry, I can't reproduce the example below even on the same machine. However, the following example produces the same error as NULL values in prior examples: > setClass("FOOCLASS", +????????? representation("list") + ) > ma = new("FOOCLASS", list(M=matrix(rnorm(300), 30,10))) > isS4(ma) [1] TRUE > data.frame(a=1:3) == ma Error in
2006 Jul 03
1
panel ordering in nlme and augPred plots
Hi, I'm new at this, I'm very confused, and I think I'm missing something important here. In our pet example we have this: > fm <- lme(Orthodont) > plot(Orthodont) > plot(augPred(fm, level = 0:1)) which gives us a trellis plot with the females above the males, starting with "F03", "F04", "F11", "F06", etc. I thought the point of
2019 Sep 18
2
'==' operator: inconsistency in data.frame(...) == NULL
>>>>> Hilmar Berger >>>>> on Sat, 14 Sep 2019 13:31:27 +0200 writes: > Dear all, > I did some more tests regarding the == operator in Ops.data.frame (see > below).? All tests done in R 3.6.1 (x86_64-w64-mingw32). > I find that errors are thrown also when comparing a zero length > data.frame to atomic objects with length>0
2011 Jan 09
3
CatchAll virtual user removes spamheaders
Hi all, I am having a small problem with a catch-all user I have setup in my Postfix/Dovecot setup. I am not 100% sure this is Dovecot related, but, logic tells me it is. I have a virtual user called @reinhold.dk setup to redirect to my main account, peter at reinhold.dk. If I send a spam mail (GTUBE) to peter at reinhold.dk, the mail is marked with Amavis x-headers as it should be. If I
2004 Jun 16
2
subset and lme
I'm puzzled by the following problem, which appears when attempting to run an analysis on part of a dataset: If I try: csubset <- dat$Diagnosis==0 cont <- lme(fixed=cform, random = ~1|StudyName, data=dat,subset=csubset,na.action=na.omit) Then I get: Error in eval(expr, envir, enclos) : Object "csubset" not found But if I do
2008 Feb 08
0
User specified correlation structure (e.g., 2-banded Toeplitz)
Dear All: I am trying to fit a special case of a 2-banded Toeplitz correlation structure. A 2-banded Toeplitz has ones on the diagonal, a correlation, RHO1, on the first off-diagonal, and a correlation, RHO2, on the second off-diagonal, with zeros on all subsequent off-diagonals. After reading relevant sections in Mixed-Effects Models in S and S-PLUS (Pinheiro & Bates, 2000) and searching
2008 Feb 08
0
User-specified correlation structure (e.g., 2-banded Toeplitz)
Dear All: I am trying to fit a special case of a 2-banded Toeplitz correlation structure. A 2-banded Toeplitz has ones on the diagonal, a correlation, RHO1, on the first off-diagonal, and a correlation, RHO2, on the second off-diagonal, with zeros on all subsequent off-diagonals. After reading relevant sections in Mixed-Effects Models in S and S-PLUS (Pinheiro & Bates, 2000) and searching
2008 Feb 12
0
nlme & special case of corARMA?
Dear All: I am trying to fit a special case of a 2-banded Toeplitz correlation structure. A 2-banded Toeplitz has ones on the diagonal, a correlation, RHO1, on the first off-diagonal, and a correlation, RHO2, on the second off-diagonal, with zeros on all subsequent off-diagonals. After reading relevant sections in Mixed-Effects Models in S and S-PLUS (Pinheiro & Bates, 2000) and searching
2001 Jun 05
2
a bug? (PR#968)
--T4sUOijqQbZv57TR Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Dear R, I would like to report what I think is a bug in R. I am running R within emacs on a Digital AlphaStation. See the version information at the end of my R session for details. I also attach a copy of the file that is read in the `read.table' command. Here's my R session, with a few
2008 Oct 23
1
After an update stable doesn't boot
Hi I just did a system update and after I've rebooted it doesn't boot up any more. All I'm getting is a blank screen with a curser blinking at the top left corner of the screen. This system was running 7.0-STABLE Any ideas as to how I can get it back up? Regards Reinhold
2008 May 27
3
How to test significant differences for non-linear relationships for two locations
Hi List, I have to compare a relationship between y and x for two locations. I found logistic regression fits both datasets well, but I am not sure how to test if relationships for both sites are significantly different. I searched the r site, however no answers exactly match the question. I used Tukey's HSD to compare two means, but the relationship in my study was not simply linear. So I