⚠️There's a newer version (4.6.20) of this package.Take me there.
doBy (version 4.5-15)
Groupwise Statistics, LSmeans, Linear Contrasts, Utilities
Description
The facilities can roughly be grouped as:
1) Facilities for groupwise computations of summary statistics and
other facilities for working with grouped data: 'do' something to data
stratified 'by' some variables.
2) LSmeans (least-squares means), general linear contrasts.
3) Miscellaneous other utilities.