sort {arules}

R Documentation

Sorting Associations

Description

Provides the method sort to sort elements in class associations (e.g., itemsets or rules) according to the value of measures stored in the association's slot quality (e.g., support).

Usage

## S4 method for signature 'associations'
sort(x, decreasing = TRUE, na.last = NA, 
    by = "support", ...)

## deprecated since arules version 0.5-1
## S4 method for signature 'associations'
SORT(x, by = "support", na.last = NA, 
    decreasing = TRUE)

Arguments

x	an object to be sorted.
decreasing	a logical. Should the sort be increasing or decreasing? (default is decreasing)
na.last	for controlling the treatment of NAs. If TRUE, missing values in the data are put last; if FALSE, they are put first; if NA, they are removed.
by	a character string specifying the quality measure stored in x to be used to sort x.
...	Further arguments passed on to order.

Value

An object of the same class as x.

Author(s)

Michael Hahsler

See Also

associations-class

Examples

data("Adult")

## Mine frequent itemsets with Eclat.
fsets <- eclat(Adult, parameter = list(supp = 0.5))

## Print the 5 itemsets with the highest support as a data.frame.
as(sort(fsets)[1:5], "data.frame")

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