sort {arules} | R Documentation

## Sorting Associations

### Description

Provides the generic function `SORT` and the S4 method 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`.

### 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")

[Package arules version 0.6-3 Index]