mean_contrasts {codingMatrices}

Display contrasts

Description

A function to display the averaging vector and class mean contrasts implied by a given coding matrix

Usage

mean_contrasts(M)

Arguments

M

Any n \times (n-1) coding matrix.

Value

The full contrast matrix, solve(cbind(1, M)), suitably annotated and presented in vulgar fractional form, for clarity.

Examples

mean_contrasts(code_helmert_forward(5))
mean_contrasts(code_diff_forward(letters[1:7]))