Displaying 20 results from an estimated 500 matches similar to: "lmer with spatial and temporal random factors, not nested"
2012 Oct 25
2
Plot lmer model with Effects package
Hi everyone!
I have a simple model that i would like to plot with 95% CIs.
It is like follows:
m1<-lmer(Richness~Grazing+I(Grazing^2)+(1|Plot),family=poisson)
By using the effects package I get two plots, one for the linear term
and one for the squared term.
Q1: Can I get all in one? I.e. with one line for the whole model?
Q2: Can I also visualize the random effects?
I would be very happy for
2009 Dec 24
1
Multiple CHOLMOD errors when attempting poisson glmm
Hello,
I have been attempting to run a poisson glmm using lme4 for some time now
and have had a lot of trouble. I would say 9 times out of 10 I receive the
following warning:
CHOLMOD warning: %h
Error in mer_finalize(ans) :
Cholmod error `not positive definite' at
file:../Cholesky/t_cholmod_rowfac.c, line 432
My data are counts of microbe colony forming units (CFUs) collected from
2020 Oct 01
1
(no subject)
I want to unsubscribe from this list.
--
Mvh Marte Synn?ve Lilleeng
tlf 97 74 38 12
[[alternative HTML version deleted]]
2010 Aug 17
1
Asterisk with Motorola Canopy
Hi Everyone,
Can anyone share their experience with Motorola Canopy solution deployment
and Asterisk? Is this a good fit?
Thanks,
Bruce
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2010 Apr 26
1
Just about "approximate F-test"
Hi, Dear R community,
These is a paper of "Wheat Grain Yield Response to N Application
Evaluated through Canopy Reflectance".
This paper of "Materials and Methods" said "A single regression equation
relating A and B was derived for each location using PROC NLIN (SAS
Inst. 1990). Slopes and intercepts for the independent regressions were
compared with an *approximate
2002 Feb 15
1
exact inference tests
R-community--
Is there a contributed package (or does anyone have code otherwise) for
exact inference tests and resampling statistics ala' StatExact? I've
perused the package descriptions on CRAN and didn't see anything, but
since several contain many functions, I thought perhaps I'd ask.
--Mike C.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Michael
2010 Mar 11
0
Multiple comparisons with a mixed effects model
Hello,
I have used R in the past to conduct multiple comparisons on standard linear models, but am a bit confused as to how to go about doing it with a mixed effects model.
I am conducting a bioindication study using carabid beetles in which I have four treatment types (forest harvest types with varying levels of canopy structure retention), and am using canopy closure percent as a covariate in
2006 Mar 31
1
Odd anova(lm()) order phenomenon, looking for an explanation
Hi everyone,
I'm witnessing an odd modelling phenomenon that I can't explain. If
anyone has seen this before, or can explain what's going on would let
me know, I'd be very grateful! Especially if I'm just being dim.
I'm fitting a pair of continuous variates and their interaction to
some residuals from another model. The sequential anova statement
changes with the term
2008 Jan 15
1
error in my selection
Hi everybody,
Well, I really hoped that until now i know how to do a selection ..... but obviously i don't. So risking your laughing at me - here you go.
I have a table with lots of vegetation data, and one column specifies in which region the data is. There are only 2 regions, region 1 and region 3. I want to select all data that belong to region 1 and after do some xtabs on it. If i do
2012 Jul 07
0
Questions about glht() and interpretation of output from Tukey's in multcomp
Hi,
I have a few questions about glht() and the interpretation of output from
Tukey's in multcomp package for lme() model.
The main issue is that I noticed that a plot that I produced with code
letters seem to contradict the graph itself. I provide data and code
below. I end with my questions.
A few things about data set. "LMA.vcp" is continuous response variable.
2012 Nov 24
0
Grouped data objects within GLS and Variogram
Dear R Help,
I am having difficulty using Variogram within GLS to examine spatial structure of nested data. My data frame consists of ecological measurements of a forest, in which three landscape positions ("landposi") are compared. Each landscape position is replicated five times ("replicat"), and the environment is measured ("canopy", "litdepth", etc.)
2009 Jan 29
1
In Rd: \describe \itemize and \item
I rebuilt a test version of my yaImpute package using Uwe Ligges' windows
build service.
I got this reply: Check result: OK
R version 2.9.0 Under development (unstable) (2009-01-27 r47756)
Here is the issue: I have the following construct in help files (this
example relates to "data"):
\format{
A data frame with 847 rows and 29 columns: \cr\cr
Ground based measurements of
2001 Nov 13
1
rarefaction variance
Here's a question for ecologists on the r-help list-- I'm addressing this
to ecologists in particular because they're most likely to be familiar
with the equation in question but I'll be happy to discuss the problem
with anyone who's willing to take a whack at it.
I'm trying to write a function to calculate the large sample variance of
species richness estimates by
2017 Mar 17
3
Anyone ever gotten Solaris to install from a CentOS PXE server?
I'm poking through Solaris documentation trying to figure out how to make
it installable via our PXE server and, as with many things Solaris, I'm
hitting walls of completely foreign procedures and setups.
Has anyone managed to do this before? I'm trying to set Solaris 11.3 up.
2003 Aug 13
2
reload
Hello All,
I wonder is there a way where I reload asterisk on CLI without disconnect any call that is currently taken place.
Foong
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2010 Jul 01
0
Cholmod warning when fitting a poisson GLMM
Hi,
I am getting a warning message when I am fitting a generalized mixed model (mod_2) and I don't understand why because when I add just an interaction factor the model works perfectly (mod_1).
Does anyone know what it happpens ?
Thanks,
Aïda
> mod_1<-lmer(sur15~soeviv15_4plus+frviv15_4plus+frat_15death+dad_class_new+soeviv15_4plus:dad_class_new +frviv15_4plus:dad_class_new+
2017 Mar 20
0
Anyone ever gotten Solaris to install from a CentOS PXE server?
Yes and PXE booting the node worked just fine. It was quite some time ago and the process was rather straightforward. This is for x86_64
use-host-decl-names on;
filename "/solaris/pxegrub";
next-server <TFTP SERVER IP>;
vendor-option-space SUNW;
option SUNW.JumpStart-server "<INSTALLATION SERVER IP>:/exports/Solaris/JUMPSTART/x86";
# BE WARNED: No hostnames.
2008 Dec 05
1
lme4, error in mer_finalize(ans)
Using lmer() on my data results in an error. The problem,
I think, is my model specification. However, lm() works
ok.
I recreated this error with a more simple dataset. (See
code below.)
# word and letter recognition data
# two within factors:
# word length: 4, 5, 6 letters
# letter position: 1-4 (in 4-letter words), 1-5 (in
5-letter words), 1-6 (in 6-letter words)
# one dependent variable:
#
2012 Mar 23
3
Using MuMIn - error message
Hello,
I hope that you can bare with me. I am new to models, but I think I have a
pretty godd understanding of how to run them now, including how to use AICc
and Anova. The issue is that I have many factors that I wish to compare so
doing each one at a time would take forever.
I came across the MuMIn package and I was so excited, however I am getting
an error message and i don't know why.
2013 Jan 18
1
Error in mer_finalize(ans) : Downdated X'X is not positive definite, 8.
Dear All,
I have conducted an experiment in order to examine predation pressure in the
surroundings of potential wildlife road-crossing structures. I have
documented predation occurrence (binary?) in these structures and calculated
several possible explanatory variables describing the spatial heterogeneity
in several scales. At the landscape scale I have calculated the percentage
of different