search for: lmere

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lme: random effects of a quadratic term
2005 Mar 26
1
lme: random effects of a quadratic term
Hello, I am estimating the following model: so2.lme<-lme(so2~1+I(alcadakm^2)+dia,data=subjectes2,na.action=na.omit) And when I try to plot the random effects of the quadratic term with respect to a covariate (mam) I get an error: > so2.lmeRE<-ranef(so2.lme,augFrame=T) > plot(so2.lmeRE,form=I(alcadakm^2)~mam) Error in plot.ranef.lme(so2.lmeRE, form = I(alcadakm^2) ~ mam ) : Only single effects allowed in left side of form. Any suggestion? Thanks! Montse Rue
Using anova() with glmmPQL()
2011 Jan 17
1
Using anova() with glmmPQL()
...quot;)) mnth=factor(c(rep("Nov",times=40),rep("Jan",times=40)),levels=c("Nov","Jan")) subjectnum=c(1:10,1:10,1:10,1:10,1:10,1:10,1:10,1:10) subject=factor(paste(roostsitu,subjectnum,sep="")) dataf=data.frame(mnth,roostsitu,subjectnum,subject,stmass) lmeres=lme(fixed=stmass~mnth*roostsitu,random=~1|subject/mnth,na.action=na.exclude) anova(object=lmeres,test="Chisq") numDF denDF F-value p-value (Intercept) 1 36 31143.552 <.0001 mnth 1 36 95.458 <.0001 roostsitu 3 36 10.614...