# ranef.lme

##### Extract lme Random Effects

The estimated random effects at level $i$ are represented as a data frame with rows given by the different groups at that level and columns given by the random effects. If a single level of grouping is specified, the returned object is a data frame; else, the returned object is a list of such data frames. Optionally, the returned data frame(s) may be augmented with covariates summarized over groups.

- Keywords
- models

##### Usage

```
## S3 method for class 'lme':
ranef(object, augFrame, level, data, which, FUN,
standard, omitGroupingFactor, subset, \dots)
```

##### Value

a data frame, or list of data frames, with the estimated
random effects at the grouping level(s) specified in `level`

and,
optionally, other covariates summarized over groups. The returned
object inherits from classes `random.effects.lme`

and
`data.frame`

.

##### References

Pinheiro, J.C., and Bates, D.M. (2000) "Mixed-Effects Models in S and S-PLUS", Springer, esp. pp. 100, 461.

##### See Also

##### Examples

```
fm1 <- lme(distance ~ age, Orthodont, random = ~ age | Subject)
ranef(fm1)
random.effects(fm1) # same as above
random.effects(fm1, augFrame = TRUE)
```

*Documentation reproduced from package nlme, version 3.1-86, License: GPL (>=2)*