Provides the generic functions and the S4 methods for the set operations
union
, intersect
, setequal
, setdiff
and
is.element
on sets of associations (e.g., rules, itemsets) and
itemMatrix.
union(x, y)
intersect(x, y)
setequal(x, y)
setdiff(x, y)
is.element(el, set)
sets of associations or itemMatrix objects.
union
, intersect
, setequal
and setdiff
return an
object of the same class as x
and y
.
is.element
returns a logic vector of length el
indicating
for each element if it is included in set
.
All S4 methods for set operations are defined for the
class name "ANY"
in the signature,
so they should work for all S4 classes for which the following
methods are available: match
, length
and unique
.
# NOT RUN {
data("Adult")
## mine some rules
r <- apriori(Adult)
## take 2 subsets
r1 <- r[1:10]
r2 <- r[6:15]
union(r1,r2)
intersect(r1,r2)
setequal(r1,r2)
# }
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