arules (version 1.0-12)

crossTable: Cross-tabulate joint occurrences across pairs of items

Description

Provides the generic function crossTable and the S4 method to cross-tabulate joint occurrences across pairs of items.

Usage

crossTable(x, ...)

Arguments

x

object to be cross-tabulated (transactions or itemMatrix).

...

further arguments (currently unused).

Value

• A symmetric matrix of n time n, where n is the number of items times in x. The matrix contains the co-occurrence counts between pairs of items.

See Also

transactions-class, itemMatrix-class.

Examples

data("Groceries")

ct <- crossTable(Groceries)
ct[1:5, 1:5]