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44 results for “from:Tom Wenseleers”

Question on estimating intraclass correlation (and significance and confidence intervals) with binomial data using mixed model and/or GEE
Tom Wenseleers · Aug 27, 2013 · r-sig-mixed-models

Dear Ian, Maybe not - but I also have problems when I code it as a fixed factor - see my other message... Cheers, Tom -----Original Message----- From: ian m s white [mailto:i.m.s.white at ed.ac.uk] Sent...

Question on calculating the conflidence limits on the intraclass correlation in a nested binomial mixed model
Tom Wenseleers · Sep 19, 2013 · r-sig-mixed-models

Dear all, Would any of you happen to have any further ideas on how to accomplish profiling intraclass correlations calculated from a lme4 glmer object? So far I just profiled the random effect variances (see below, keeping the total variance...

Testing significance of deviation of sex ratio (prop of females) from a priori predicted proportion
Tom Wenseleers · Jan 20, 2014 · r-sig-mixed-models

Hi Thierry, I now tried library(devtools) install_github("lme4",user="lme4") # latest development version library(lme4) library(multcomp) library(gtools) library(car) data=read.csv("http://www.kuleuven.be/bio/ento/temp/test_data_sexratio.csv",header=T,stringsAsFactors...

Support for transparency in metafile export & support for export to Powerpoint
Tom Wenseleers · Jun 29, 2015 · r-devel

Dear all, For vector-based output, PDF export of R graphs works well, but unfortunately Office on Windows provide poor support for PDF and importing & exporting to other formats using Inkscape can be buggy. Enhanced metafile export in turn does...

Question on calculating the conflidence limits on the intraclass correlation in a nested binomial mixed model
Tom Wenseleers · Sep 17, 2013 · r-sig-mixed-models

Hi Thierry, Many thanks for your comments - fitting group (colony) as a fixed factor is no problem, see code below. But would you know by any chance how I should profile the total variance, or calculate a profiled Vtot on...

Question on mixed models, pseudoreplication and inflated degrees of freedom
Tom Wenseleers · Jul 31, 2013 · r-sig-mixed-models

Dear all, I would appreciate any feedback on the following experimental setup and especially regarding a referee comment that suggested we were using inflated degrees of freedom and that our experiment suffered from pseudoreplication. So my question is whether the...

Question on estimating intraclass correlation (and significance and confidence intervals) with binomial data using mixed model and/or GEE
Tom Wenseleers · Aug 27, 2013 · r-sig-mixed-models

Dear all, Further to my previous message it appears that there might be a problem with the case where you set use.u=T (to also simulate random effects) in bootMer. This appears to be the case judging from the...

Bug in afex, pbkrtest or lme4 in parametric bootstrapping?
Tom Wenseleers · Aug 21, 2013 · r-sig-mixed-models

Dear Henrik, Many thanks for this fast response! The other error I mentioned apparently was due to me having afex_0.6-77 installed, or loading it after lme4 (I think that masked lme4's refit), with afex_0.5...

Testing significance of deviation of sex ratio (prop of females) from a priori predicted proportion
Tom Wenseleers · Jan 20, 2014 · r-sig-mixed-models

Hi Thierry, Ha, are you sure - can't I use it to model possible overdispersion in this case? Cheers, Tom -----Original Message----- From: ONKELINX, Thierry [mailto:Thierry.ONKELINX at inbo.be] Sent: 20 January 2014 15:41 To: Tom Wenseleers...

Testing significance of deviation of sex ratio (prop of females) from a priori predicted proportion
Tom Wenseleers · Jan 20, 2014 · r-sig-mixed-models

Hi Thierry, Many thanks for that - that's exactly what I needed! Cheers, Tom -----Original Message----- From: ONKELINX, Thierry [mailto:Thierry.ONKELINX at inbo.be] Sent: 20 January 2014 09:24 To: Tom Wenseleers; r-sig-mixed-models at r...

Question on mixed model design to analyze microarray data
Tom Wenseleers · Jun 30, 2013 · r-sig-mixed-models

Dear Ben, Many thanks for your message - after some experimentation I did indeed confirm that the correct specification in lmer was the one you mentioned, i.e. the correct code to get almost identical output as in SAS/glimmix was...

Error bars for treatment interactions in Gaussian and Binomial mixed models
Tom Wenseleers · Aug 26, 2013 · r-sig-mixed-models

Dear Sarah, The effect package I believe would give confidence intervals as if they would be calculated from the SE on the Wald statistics, so this is not totally ideal. Would the lsmeans package perhaps work better for you? That...

Correct specification of nested binomial mixed model with custom intercept to infer variance components and intraclass correlations
Tom Wenseleers · Jan 26, 2017 · r-sig-mixed-models

Dear all, Just to ask a bit of advice about the correct way to specify a nested binomial GLM, in the context of estimating variance components / intraclass correlations to infer heritabilities of a behavioural trait. The behavioural trait is a...

Bug in afex, pbkrtest or lme4 in parametric bootstrapping?
Tom Wenseleers · Aug 21, 2013 · r-sig-mixed-models

Dear all, I was just trying to use parametric bootstrapping to calculate significance levels in a Poisson mixed model using afex/pbkrtest. Using the data in attachment and the code data_alates=read.csv("alates_raw_FINAL3.csv", header=TRUE...

Correct specification of nested binomial mixed model with custom intercept to infer variance components and intraclass correlations
Tom Wenseleers · Jan 27, 2017 · r-sig-mixed-models

Hi Jarrod, In the meantime I think I found what I was doing wrong - I should have included all the control bees that we genotyped and which did not eat any eggs as well in the dataset, specifying they ate...

Support for high DPI 4K screens
Tom Wenseleers · Sep 5, 2015 · r-devel

Hi Brian, Thanks for your message. Just to clarify - I've seen this problem on Windows both under Windows 8.1 and Windows 10, and the RStudio people were also aware of the problem (it's also a known problem...

Specification of binomial mixed model with custom intercept
Tom Wenseleers · Jun 23, 2015 · r-sig-mixed-models

Hi Jake, Many thanks for your advice! And yes realised the model would never quite get to 0% or 100% - that's why I had been trying putting in an intercept, as in data$baseline=qlogis(c(0.001,0...

Providing R binaries compiled against a multithreaded BLAS like Intel MKL by default?
Tom Wenseleers · Dec 27, 2019 · r-devel

Dear all, Given that the Intel MKL multithreaded BLAS is now free (https://software.intel.com/en-us/mkl/choose-download, released under the very permissive Intel Simplified Software License, https://software.intel.com/en-us/license/intel-simplified-software...

Correct specification of nested binomial mixed model with custom intercept to infer variance components and intraclass correlations
Tom Wenseleers · Jan 27, 2017 · r-sig-mixed-models

Hi Jarrod, Well the structure of the datafile is such that each row of the datafile contains the proportion of the eggs eaten in each trial by each individual bee (that belongs to a particular patriline, ie there would be...

Correct specification of nested binomial mixed model with custom intercept to infer variance components and intraclass correlations
Tom Wenseleers · Jan 27, 2017 · r-sig-mixed-models

Hi Jarrod, Well the structure of the datafile is such that each row of the datafile contains the proportion of the eggs eaten in each trial by each individual bee (that belongs to a particular patriline, ie there would be...

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