Data.frame Representation for arules Objects

Description

Provides the generic function DATAFRAME and the S4 methods to create a data.frame representation from some arules objects. based on rules. These methods are used for the coercion to a data.frame, but offers more control over the coercion process (item separators, etc.).

Usage

DATAFRAME(from, ...)

Arguments

Details

Using DATAFRAME is equivalent to the standard coercion as(x, "data.frame"). However, for rules, the argument separate = TRUE will produce separate columns for the LHS and the RHS of the rule. Furthermore, the arguments itemSep, setStart, setEnd (and ruleSep for separate = FALSE) will be passed on to the label method.

Value

a data.frame.

Author(s)

Michael Hahsler

See Also

coerce,rules,data.frame-method, coerce,itemsets,data.frame-method, coerce,transactions,data.frame-method, labels,itemMatrix-method, LIST

Examples

data(Adult)
  
DATAFRAME(head(Adult))
DATAFRAME(head(Adult), setStart = '', itemSep = ' + ', setEnd = '')

rules <- apriori(Adult, 
  parameter = list(supp = 0.5, conf = 0.9, target = "rules"))
rules <- head(rules, by = "conf")


### default coercions (same as as(rules, "data.frame"))
DATAFRAME(rules)

DATAFRAME(rules, separate = TRUE)
DATAFRAME(rules, separate = TRUE, setStart = '', itemSep = ' + ', setEnd = '')