arules (version 0.1-3)

read.transactions: Read Transaction Data

Description

Reads a transaction data file from disk and creates a transactions object.

Usage

read.transactions(file, format = c("basket", "single"), sep = NULL,
                  cols = NULL)

Arguments

file

the file name.

format

a character string indicating the format of the data set. One of "basket" or "single", can be abbreviated.

sep

a character string specifying how fields are separated in the data file, or NULL (default). For basket format, this can be a regular expression; otherwise, a single character must be given. The default corresponds to white space

cols

an numeric vector of length two giving the numbers of the columns (fields) with the transaction and item ids, respectively. Only used for single format.

Value

• Returns an object of class transactions.

Details

For basket format, each line in the transaction data file represents a transaction where the items (item labels) are separated by the characters specified by sep. For single format, each line corresponds to a single item, containing at least ids for the transaction and the item.

See Also

transactions-class