read.transactions {arules}R Documentation

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 separators.
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.

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.

Value

Returns an object of class transactions.

Author(s)

Michael Hahsler

See Also

transactions-class


[Package arules version 0.1-0 Index]