pair {reclin2}

Generate all possible pairs

Description

Generates all combinations of records from x and y.

Usage

pair(x, y, deduplication = FALSE, add_xy = TRUE)

Arguments

x

first data.frame

y

second data.frame. Ignored when deduplication = TRUE.

deduplication

generate pairs from only x. Ignore y. This is usefull for deduplication of x.

add_xy

add x and y as attributes to the returned pairs. This makes calling some subsequent operations that need x and y (such as compare_pairs easier.

Details

Generating (all) pairs of the records of two data sets, is usually the first step when linking the two data sets.

Value

A data.table with two columns, .x and .y, is returned. Columns .x and .y are row numbers from data.frames .x and .y respectively.

See Also

pair_blocking and pair_minsim are other methods to generate pairs.

Examples

data("linkexample1", "linkexample2")
pairs <- pair(linkexample1, linkexample2)