incidence {relations}

Relation Incidences

Description

Determine the incidences of a relation.

Usage

relation_incidence(x, ...)

Arguments

x

an object inheriting from class relation.

...

Further arguments passed to the labeling function used for creating the dimnames of the incidence matrix.

Value

For a k-ary relation, a k-dimensional numeric array with values in the unit interval inheriting from class relation_incidence whose elements give the memberships of the corresponding k-tuples are contained in the relation (for a crisp relation, a binary (0/1) array with elements indicating whether the corresponding tuples are contained in the relation or not).

See Also

relation(); relation_incidence<-() for modifying the incidences.

Examples

R <- as.relation(c(A = 1, B = 2, C = 3))
relation_incidence(R)