Re: [R] Error message in lmer

2007-08-02 Thread lorenz.gygax
I do not think anyone has answered this. I'm trying to run a simple one-way ANCOVA with the lmer function in R package lme4, but have encountered some conceptual problem. The data file MyData.txt is like this: Group Subj Cov Resp A1 3.90 4.05 A 2 4.05 4.25 A 3

Re: [R] Error message in lmer

2007-08-02 Thread Gang Chen
Thanks a lot for the response and explanation, Lorenz! It seems that I can run the analysis with 'lm' without treating subject as a random factor lm(Resp ~ Group*Cov, TestData) Thanks, Gang On Aug 2, 2007, at 5:09 AM, [EMAIL PROTECTED] [EMAIL PROTECTED] wrote: I do not think anyone has

[R] Error message in lmer

2007-07-30 Thread Gang Chen
I'm trying to run a simple one-way ANCOVA with the lmer function in R package lme4, but have encountered some conceptual problem. The data file MyData.txt is like this: Group Subj Cov Resp A 1 3.90 4.05 A2 4.05 4.25 A3 4.25 3.60 A4 3.60