LIST: List Representation for Objects Based on Class itemMatrix

Description Usage Arguments Details Value Author(s) See Also Examples

Description

Provides the generic function LIST and the S4 methods to create a list representation from objects based on itemMatrix (e.g., transactions, tidLists, or itemsets). These methods can be used for the coercion to a list.

Usage

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LIST(from, ...)

## S4 method for signature 'itemMatrix'
LIST(from, decode = TRUE)

## S4 method for signature 'transactions'
LIST(from, decode = TRUE)

## S4 method for signature 'tidLists'
LIST(from, decode = TRUE)

Arguments

from

the object to be converted into a list.

...

further arguments.

decode

a logical controlling whether the items/transactions are decoded from the column numbers internally used by itemMatrix to the names stored in the object from. The default behavior is to decode.

Details

Using LIST with decode = TRUE is equivalent to the standard coercion as(x, "list"). LIST returns the object from as a list of vectors. Each vector represents one row of the itemMatrix (e.g., items in a transaction or itemset).

Value

a list primitive.

Author(s)

Michael Hahsler

See Also

decode, coerce,itemMatrix,list-method, itemMatrix-class, DATAFRAME

Examples

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data(Adult)

### default coercions (same as as(Adult[1:5], "list"))
LIST(Adult[1:5])

### coercion without item decoding
LIST(Adult[1:5], decode = FALSE)

arules documentation built on Sept. 2, 2017, 1:09 a.m.