Build ESCO-to-CP2021 level 3 crosswalk

Merge the CPI-ESCO mapping with the CP2021 level 3 classification to produce a lookup table that maps each idesco_level_4 code to its Italian ESCO label and CP2021 3-digit group.

Usage

build_cpi_esco_crosswalk(esco_mapping, cpi3)

Arguments

esco_mapping

A data.table from read_esco_mapping(), containing at least idesco_level_4, esco_level_4, and idcp_2011_v.

cpi3

A data.table with CP2021 level 3 classification. Must contain cod_3 and nome_3.

Value

A data.table with one row per idesco_level_4 and columns: idesco_level_4, it_esco_level_4 (collapsed Italian ESCO labels), cod_3, nome_3.