arules (version 1.0-12)

sort: 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

## S3 method for class 'associations':
sort(x, decreasing = TRUE, na.last = NA, 
    by = "support", ...)
## deprecated since arules version 0.5-1
## S3 method for class '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.

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")