Hi,
I wanted to check the difference in results (using lme4) , if I treated a
particular variable (beadchip) as a random effect vs if I treated it as a
fixed effect.
For the first case, my formula is:
lmer.result <- lmer(expression ~ cancerClass + (1|beadchip))
For the second case, I want to do:
lmer.result2 <- lmer(expression ~ cancerClass + beadchip)
However, I get an error in the second case:
> Error in lmerFactorList(formula, fr, 0L, 0L):
No random effects terms specified in formula
Is there any way that I can get lmer() to accept a formula without a random
effect?
many thanks
[[alternative HTML version deleted]]
______________________________________________
R-help@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
