Remap merged EPIDs to their canonical value

Rewrites the epid column using a synonym table (old EPID -> canonical EPID) so that records POLIS has merged collapse together in the subsequent polis_upsert() step. A no-op when synonyms is NULL, so cleaners can call it unconditionally.

Usage

remap_synonyms(data, synonyms = NULL)

Arguments

data

A data frame with an epid column.

synonyms

A data frame with columns epid (old) and canonical_epid, or NULL (default no-op).

Value

data with epid remapped where a synonym exists.