gnm (version 1.0-3)

Symm: Symmetric Interaction of Factors

Description

Symm codes the symmetric interaction of factors having the same set of levels, for use in regression models of symmetry or quasi-symmetry.

Usage

Symm(...)

Arguments

...

one or more factors.

Value

• A factor whose levels index the symmetric interaction of all factors supplied as input.

See Also

Diag

Examples

row <- gl(4, 4, 16)
col <- gl(4, 1, 16)
symm4by4 <- Symm(row, col)
matrix(symm4by4, 4, 4)