Displaying 20 results from an estimated 1000 matches similar to: "glmmPQL & Wald-type F-tests"
2009 Aug 12
0
Attached file following download failure
Hello,
I'm working with a package that uses download.file in functions to
extract information from remote databases. My current environment is
Windows XP Pro SP3, R 2.7. A full extraction can be a great deal of
data, so the download is accomplished in generally manageable packets,
such that a single download will result in many files, which are written
to a directory. It is not uncommon for a
2009 Aug 11
1
Passing a list object to lapply
Hello,
I'm having difficulty passing an object name to a lapply function. Can
somebody tell me the trick to make this work?
#Works
T13702 <- TRACKDATA[["13702.xls"]][["data"]]
min(unlist(lapply(list(T13702), function(x) mdy.date(x[1, 2], x[1, 1],
x[1, 3]))))
16553
#Works
d<-2
assign(paste("T",substr(names(TRACKDATA)[d],1,(nchar(names(TRACKDATA)[d]
2005 Nov 07
1
R seems to "stall" after several hours on a long series o f analyses... where to start?
You can test if the problem is accumulation in memory registers, which is
certainly what this sounds like. Just do a loop over a reasonably small
number of iterations and store or print the time between each iteration. If
memory accumulation it will run optimally for the first few iterations,
after which the time will increase noticeably (essentially exponentially,
hence ultimately freezes up). If
2013 Feb 19
0
calcMin
I tried to use calcMin with a function that uses a number of ...
arguments (all args from resid on) besides the vector of parameters
being fit. Same idea as optim, nlm, nlminb for which this form of ...
syntax works. But with calcMin I get an error regarding unused
arguments. No partial matches to previous arguments that I can see.
Anybody know the reason or fix for this?
2008 Oct 17
1
Use of .First() in Mac OS X gui
Hi,
I am having problems using .First() with the Mac OS X gui version of R 2.7.2
(under OS X 10.5.5); .First is ignored on startup. .First() does work in the
command-line version of R under Mac OS X but my specific task requires the
gui version. I can find no reference to this issue in the Mac OS X FAQ or in
other manuals, does anyone have a solution for this?
Thanks,
Ian
--
Ian Jonsen
2009 May 11
1
R and McAfee 8.5
Hi,
I have been working with R for the last year and using the UKFSST package to look at satellite tag track data and SST information. Fpr those not familiar, the package uses the positions estimated by the satellite tags themselves and the associated SST data from servers (in this case, from the University of Hawaii and the NOAA Coastwatch website) for the time preiod to estimate a reasonable
2005 Jul 20
1
system-config-display problem
Had centos 4.1 set up and running with X. Had to replace the monitor to an
Acer LCD monitor (model AL1714). When I try to reconfigure X,
"system-config-display" seems ok going through the first stage of detecting
the graphics card but then returns a floating "Input not supported" message
to the screen and nothing happens afterward. Any hints on solving this
issue will be
2008 Mar 13
2
Plot contour over filled contour
Dear R-users,
I haven't found a way in the searchable archive to overplot a contour
(lines) over a surface.
I have a (n,m) matrix that represents sea surface temperature that I
have plotted using image.plot(), filled.contour() or image(). I would
like to overplot this image with some contour lines of mixed layer depth
values(same size matrix). How can I do this?
Any help is appreciated,
2008 Nov 04
0
HDF5 and R 2.8.0patched
Hi Everyone,
I have updated my R version from 2.7 to 2.8 (patch) and since then I can
not open HDF5 files that I saved previously with the command hdf5save
from the hdf5 library.
As anyone had that problem yet?
Any help would be appreciated. Thanks
Emmanuel
-------------------------------------------
Dr. Emmanuel Devred
Bedford Institute of Oceanography,
1 Challenger Drive,
Dartmouth, Nova
2004 Jun 15
2
S/R/RWeb/ODBC
I'm looking for an optimal approach to access Oracle databases via RWeb
applications. I'm new to R but familiar with programming functions and web
pages for the S+ Statserver. I'm now going through the motions of migrating
S+/Statserver applications to R/RWeb as a feasability exercise. I can access
databases using ODBC directly in R or S, and using Statserver, but I have
not succeeded
2009 Aug 19
4
Confidence interval on parameters from optim function
Hi everyone,
I have two questions:
I would like to get confidence intervals on the coefficients derived
from the optim() function.
I apply optim() to a given function f
> res <-
optim(c(0.08,0.04,1.),f,NULL,method="L-BFGS-B",lower=c(0.,0.,0.))
And I would like to get the p-value and confidence intervals associated
with
> res$par
My second question deals with error message. I
2005 Dec 01
3
Strange Estimates from lmer and glmmPQL
I'm trying to fit a generalized mixed effects model to a data set where
each subject has paired categorical responses y (so I'm trying to use a
binomial logit link). There are about 183 observations and one
explanatory factor x. I'm trying to fit something like:
(lmer(y~x+(1|subject)))
I also tried fitting the same type of model using glmmPQL from MASS. In
both cases, I get a
2012 Nov 12
1
R lmer & SAS glimmix
Hi,
I am trying to fit a model with lmer in R and proc glimmix in SAS. I have
simplified my code but I am surprised to see I get different results from
the two softwares.
My R code is :
lmer(y~age_cat + (1|cat),data=fic,family=binomial(link = "logit"), NaGQ=1)
My SAS code is :
ods output Glimmix.Glimmix.ParameterEstimates=t_estimates;
proc glimmix data=tab_psi method=laplace;
2002 Mar 04
1
password synchronization - smbpasswd for ordinary users
I have Samba 2.2.3a running on Tru64 Unix v4.0f (?)
I have Win NT4.0 (sp6a) as our local PC OS.
I have created a Samba password file for users.
I've tried several permutations, but currently I have
security = user
encrypt passwords = yes
unix password sync = yes
username map = /../../../usermap.txt
I also have standard password encryption on the NT side, i.e. not plaintext.
If I sync
2008 Jan 04
1
GLMMs fitted with lmer (R) & glimmix (SAS)
I'm fitting generalized linear mixed models to using several fixed effects (main effects and a couple of interactions) and a grouping factor (site) to explain the variation in a dichotomous response variable (family=binomial). I wanted to compare the output I obtained using PROC GLIMMIX in SAS with that obtained using lmer in R (version 2.6.1 in Windows). When using lmer I'm specifying
2005 Dec 29
1
Glimmix and glm
Hello.
Some months age an e-mail was posted in which a comparison between Glimmix
and glm was discussed. I have not been able to find that e-mail on the R
archive. Does anyone recall the date of the above e-mail?
Thank you very much.
*******************************************
Antonio Paredes
USDA- Center for Veterinary Biologics
Biometrics Unit
510 South 17th Street, Suite 104
Ames, IA 50010
2012 Jun 19
1
Pseudolikelihood Estimation of spatial GLMM using R
Dear R users,
I've been trying to find an R package which does the PL estimation of
spatial GLMMs especially with the negative binomial model. so it would be
something similar to the "proc GLIMMIX" with the PL method in SAS. I've
looked up some possible packages related to GLMMs, but it doesn't seem to be
anyone using the PL estimation.
Thanks for your help!
Fei He
UCR
2008 Oct 23
0
R CMD Rd2dvi (PR#13200)
Hello,
I can build packages with R-2.8.0 but I cannot run the code:
R CMD Rd2dvi --pdf --no-clean <pkg_name>
=20
Error message:
.: Can't open C:/Apps/R/R280/share/sh/dcf.sh: No such file or directory
The system cannot find the path specified.
=20
The above code works fine in R-2.7.2.
=20
Comparing the bash script Rd2dvi.sh between R-2.7.2 and R-2.8.0 makes me
think that the script is
2008 Nov 07
1
AIC value in lmer
Dear R Users,
May be this message should be directy send to Douglas Bates ...
I just want to know if I can use the AIC value given in the output of an lmer model to classify my logistic models.
I heard that the AIC value given in GLIMMIX output (SAS) is false because it come from a calculation based on pseudo-likelyhood.
Is it the same for lmer ???
thanks,
Arnaud
Arnaud MOSNIER
Biologiste
2012 Feb 24
1
code for mixed model in R?
Dear
I am analysing my data wit a mixed model. I used SAS but I want to redo the
same analysis in R. Here the SAS code and what I wrote in R. It seems to
work but the results are not the same. I don't know how to specify the class
variable in R or specify the variance matrix. Can you please help me?
Thanks
Jurgen
## SAS:
proc glimmix data=trend method=RSPL;
class pid;
model mdrfinal