is_orthogonal function

Check for orthogonality

Given a contrast matrix or list of contrast matrices (eg from enlist_contrasts() ), return a logical vector of whether each contrast is orthogonal or not.

is_orthogonal(contrast_matrices, USE.NAMES = FALSE)

Arguments

• contrast_matrices: Contrast matrix or list of contrast matrices
• USE.NAMES: Logical, whether vector should be named

Returns

Logical vector, will retain names of a passed list

Examples

is_orthogonal(treatment_code(5)) # FALSE
is_orthogonal(helmert_code(5)) # TRUE