Profile function does not work with objekt of class "mer"
Hello, I am unable to get profile zeta plots with the profile function. I am aware of the discussion of this issue earlier (http://markmail.org/message/gkfiwcj4ar4vk64e#query:Error%20in%20UseMethod%28profile%29%20%3A%20no%20applicable%20method%20for%20%27profile%27%20applied%20to%20an%20object%20of%20class%20mer%20lme4+page:1+mid:weai7ngdghudkbm5+state:results). Donald Bates stated there that with the useR! conference, there will be a solution. Unfortunately the commands introduced in the slides of his tutorial still give me the error. What is the correct syntax for the profile function? The following does not work:
fm2 <- lmer(diameter~1 + (1|plate) + (1|sample),Penicillin) profile(fm2)
Error in UseMethod("profile") :
no applicable method for 'profile' applied to an object of class "mer"
Session informations:
R version 2.11.1 (2010-05-31) x86_64-pc-linux-gnu locale: [1] LC_CTYPE=en_US.utf8 LC_NUMERIC=C LC_TIME=en_US.utf8 LC_COLLATE=en_US.utf8 [5] LC_MONETARY=C LC_MESSAGES=en_US.utf8 LC_PAPER=en_US.utf8 LC_NAME=C [9] LC_ADDRESS=C LC_TELEPHONE=C LC_MEASUREMENT=en_US.utf8 LC_IDENTIFICATION=C attached base packages: [1] tools stats graphics grDevices utils datasets methods base other attached packages: [1] lme4_0.999375-35 Matrix_0.999375-44 lattice_0.19-13 loaded via a namespace (and not attached): [1] grid_2.11.1 nlme_3.1-97 stats4_2.11.1
Thank you in advance! Best, Friedericksen