Can GLMM take formula derived from another object?
foo <- glm (OVEN ~ h + h2, poisson, dataset)
# ok
bar <- GLMM (OVEN ~ h + h2, poisson, dataset, random = list (yr = ~1))
#error
bar <- GLMM (foo$formula, poisson, dataset, random = list (yr = ~1))
#Error in foo$("formula" + yr + 1) : invalid subscript type
I am using R2.1.0, lme4 0.8-2, windows xp. Below is a dataset if you need (yr
is a factor).
> dataset
OVEN h h2 yr
1 2 30 900 0
2 3 30 900 1
3 4 30 900 2
4 3 30 900 3
5 3 30 900 4
6 1 25 625 0
7 2 25 625 1
8 1 25 625 2
9 1 25 625 3
10 2 25 625 4
Thanks ahead!
Weihong Li
Undergraduate student
University of Alberta
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