Dear R-help list readers,
I am fitting a mixed model using the lme function (R V 2.3.1 for
Windows). This is an example:
dep<-c(25,40,33.33,60,70.83,72,71.43,50,40,53.33,64,54.17,60,53.57)
yes<-c(0,1,2,3,4,5,6,0,1,2,3,4,5,6)
treat<-c(1,1,1,1,1,1,1,0,0,0,0,0,0,0) #factor
If I now fit a model with random slopes as well as intercepts:
model1<-lme(dep~yes,random=yes|treat)
R encounters the following problem:
Fehler in lme.formula(dep ~ yes, random = ~yes | treat) :
iteration limit reached without convergence (9)
Following other instructions on that problem, I tried to adjust the
iteration limits and tolerances using lmeControl(), however this did not
work.
Can someone help me?
Best regards,
Ralf
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