arules (version 1.7-9)

LIST: List Representation for Objects Based on Class itemMatrix

Description

Provides the generic function LIST() and the methods to create a list representation from objects of the classes itemMatrix, transactions, and tidLists.

Usage

LIST(from, ...)
# S4 method for itemMatrix
LIST(from, decode = TRUE)
# S4 method for transactions
LIST(from, decode = TRUE)
# S4 method for tidLists
LIST(from, decode = TRUE)

Value

a list primitive.

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.

Author

Michael Hahsler

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).

See Also

Other import/export: DATAFRAME(), pmml, read, write()

Examples

data(Adult)

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

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