Extract fixed-effects estimates
fixef.Rd
Extract the fixed-effects estimates
Arguments
- object
any fitted model object from which fixed effects estimates can be extracted.
- add.dropped
for models with rank-deficient design matrix, reconstitute the full-length parameter vector by adding
NA
values in appropriate locations?- ...
optional additional arguments. Currently none are used in any methods.
Examples
fixef(lmer(Reaction ~ Days + (1|Subject) + (0+Days|Subject), sleepstudy))
#> (Intercept) Days
#> 251.40510 10.46729
fm2 <- lmer(Reaction ~ Days + Days2 + (1|Subject),
data=transform(sleepstudy,Days2=Days))
#> fixed-effect model matrix is rank deficient so dropping 1 column / coefficient
fixef(fm2,add.dropped=TRUE)
#> (Intercept) Days Days2
#> 251.40510 10.46729 NA
## first two parameters are the same ...
stopifnot(all.equal(fixef(fm2,add.dropped=TRUE)[1:2],
fixef(fm2)))