[R] nlme errors ?

[Troels Ring]

Dear friends. Below is ouput directly from the help on qqnorm.lme.html
It do not seem to work as expected - on win98, R 1.1, although the 
regression is undertaken, so qqnorm
misunderstands, or what ?

library(nlme)
data(Orthodont)
fm1 <- lme(distance ~ age, Orthodont, random = ~ age | Subject)
# normal plot of standardized residuals by gender
qqnorm(fm1, ~ resid(., type = "p") | Sex, abline = c(0, 1))
Error in as.double.default(y) : (list) object cannot be coerced to vector 
type 14
# normal plots of random effects
qqnorm(fm1, ~ranef(.))
Error in as.double.default(y) : (list) object cannot be coerced to vector 
type 14


Best wishes

Troels
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