Groupwise Statistics, LSmeans, Linear Contrasts, Utilities

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.


Reference manual

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4.5-15 by Søren Højsgaard, a year ago

Browse source code at

Authors: Søren Højsgaard <> and Ulrich Halekoh <>

Documentation:   PDF Manual  

GPL (>= 2) license

Imports MASS, Matrix

Depends on methods

Suggests pbkrtest, ggplot2, multcomp, geepack, lme4, survival

Imported by BayesNetBP, MIPHENO, Rphylopars, SensMixed, fdANOVA, genotypeR, synbreed.

Depended on by refGenome.

Suggested by PracTools, R2MLwiN, bfp, datarobot, gsubfn, rattle.

See at CRAN