slim-package: Singular linear models for longitudinal data.
Description
The slim package fits singular linear models to longitudinal data. Singular
linear models are useful when the number, or timing, of longitudinal
observations may be informative about the observations themselves. They are
described in Farewell (2010) <doi:10.1093/biomet/asp068>, and are extensions
of the linear increments model of Diggle et al. (2007)
<doi:10.1111/j.1467-9876.2007.00590.x> to general longitudinal data.Details
The most important function is slim, whose formula interface is similar to
that of lm.