add_from_x: Add variables from data sets to pairs
In reclin: Record Linkage Toolkit

Description Usage Arguments Value Examples

Add variables from data sets to pairs

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add_from_x(pairs, ...)

add_from_y(pairs, ...)

`pairs`	a `pairs` object, such as generated by `pair_blocking`
`...`	a set of option of the form `newvarname = "varname"`, where `varname` is a column in `x` or `y`.

A pairs object which contains all column of the original pairs with the new columns added to it. An error is generated when it is attempted to add variables that already exist in pairs.

data("linkexample1", "linkexample2")
pairs <- pair_blocking(linkexample1, linkexample2, "postcode")
pairs <- compare_pairs(pairs, c("lastname", "firstname", "address", "sex"))
pairs <- add_from_x(pairs, id_x = "id")
pairs <- add_from_y(pairs, id_y = "id")
pairs$true_match <- pairs$id_x == pairs$id_y