codingMatrices (version 0.1.1)
Alternative Coding Matrices for Factors in Linear Model Formulae
Description
A collection of coding functions as alternatives to the standard
functions in the stats package, which have names starting with 'contr.'. Their
main advantage is that they provide a consistent method for defining marginal
effects in multi-way factorial models. In a simple one-way ANOVA model the
intercept term is always the simple average of the class means.