doBy - Groupwise summary statistics, general linear contrasts,
population means (least-squares-means), and other utilities
Description
doBy originally contained facilities to 'do something' to
data where data is partitioned 'by' some variables which define
groupings of data - hence the name doBy. doBy contains a
variety of utilities including:
1) Facilities for groupwise computations of summary statistics and
other facilities for working with grouped data.
2) General linear contrasts and LSMEANS (least-squares-means also known
as population means),
3) other utilities.