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9 results for “from:Brent Pedersen”

error on example
Brent Pedersen · Mar 29, 2012 · r-sig-mixed-models

Hi, I'm running this code: library(lme4a) data(ergoStool,package="MEMSS") ergoStool$Subject <- factor(ergoStool$Subject) fm01 <- lmer(effort~1 + Type + (1|Subject), ergoStool, REML=0) And getting this error: Error: is.numeric(u <- attr(fval, "u")) is not...

error on example
Brent Pedersen · Mar 30, 2012 · r-sig-mixed-models

On Thu, Mar 29, 2012 at 8:48 PM, Ben Bolker <bbolker at gmail.com> wrote: > Brent Pedersen <bpederse at ...> writes: > >> >> Hi, I'm running this code: >> >> library(lme4a) >> data(ergoStool,package="MEMSS") >> ergoStool$Subject <- factor(ergoStool$Subject) >> fm01 <- lmer...

repeated measures setup
Brent Pedersen · Mar 28, 2011 · r-help

hi, i have some data, a subset of which is pasted at the end of this message. i am trying to understand how to do repeated measures as our study design consists of a subject and up to 2 siblings...

much different results for random effect vs simple lm.
Brent Pedersen · Jun 20, 2011 · r-sig-mixed-models

Hi, I have a model like this: # for many y values/probes formula = y ~ concordant + age.proband + age.sibling + sex.proband + sex.sibling I run this model and get p-values with the formula: model = lm(formula, data=df2) s...

repeated measures: levels of grouping factor must be less than number of obs
Brent Pedersen · Apr 18, 2011 · r-sig-mixed-models

hi, I posted this to the main R mailing list a while back and people directed me to the lme4 package and this mailing list so I thought I might get more help here... We have some data, a subset...

lme4 error: "Number of levels of a grouping factor . . ."
Brent Pedersen · Jul 27, 2011 · r-sig-mixed-models

On Wed, Jul 27, 2011 at 12:10 PM, Ben Bolker <bbolker at gmail.com> wrote: > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA1 > > On 07/27/2011 01:50 PM, Brent Pedersen wrote: >> On Wed, Jul 27, 2011 at 7:34...

lme4 error: "Number of levels of a grouping factor . . ."
Brent Pedersen · Jul 27, 2011 · r-sig-mixed-models

On Wed, Jul 27, 2011 at 7:34 AM, Ben Bolker <bbolker at gmail.com> wrote: > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA1 > > On 07/27/2011 03:29 AM, Martin Maechler wrote: >>>>>>> Gabrielle Miller-Messner <gmessner at ucdavis.edu> >>>>>>> ? ? on...

summary vs anova
Brent Pedersen · Dec 19, 2011 · r-help

Hi, I'm sure this is simple, but I haven't been able to find this in TFM, say I have some data in R like this (pasted here: http://pastebin.com/raw.php?i=sjS9Zkup): > head(df) gender age...

repeated measures: levels of grouping factor must be less than number of obs
Brent Pedersen · Apr 18, 2011 · r-sig-mixed-models

On Mon, Apr 18, 2011 at 9:44 AM, Andrew Miles <rstuff.miles at gmail.com> wrote: > Just to clarify, when you say repeated measures do you mean that you have > data from multiple individuals from the same family? ?Or...

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