arules (version 1.5-0)

unique: Remove Duplicated Elements from a Collection

Description

Provides the generic function unique and the S4 methods for itemMatrix. unique uses duplicated to return an itemMatrix with the duplicate elements removed. Note that unique can also be used on collections of associations.

Usage

unique(x, incomparables = FALSE, ...)

Arguments

x

an object of class itemMatrix or associations.

...

further arguments (currently unused).

incomparables

currently unused.

Value

An object of the same class as x with duplicated elements removed.

See Also

duplicated, associations-class, itemMatrix-class

Examples

data("Adult")

r1 <- apriori(Adult[1:1000], parameter = list(support = 0.5))
r2 <- apriori(Adult[1001:2000], parameter = list(support = 0.5))

## Note that this produces a collection of rules from two sets
r_comb <- c(r1, r2)
r_comb <- unique(r_comb)
r_comb