domain | R Documentation |
Determine the domain, domain names, arity, or size of a relation or a relation ensemble.
relation_arity(x)
relation_domain(x)
relation_domain_names(x)
relation_size(x)
x |
an R object inheriting from class |
For determining the domain, an object of class relation_domain
,
inheriting from tuple
.
tuple()
;
relation()
;
relation_domain<-()
and
relation_domain_names<-()
for modifying the domain and domain names of a relation, respectively.
## A simple relation:
R <- as.relation(c(A = 1, B = 2, C = 3))
relation_incidence(R)
relation_arity(R)
relation_domain(R)
relation_domain_names(R)
relation_size(R)
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