Re-vintage LSOA codes between 2011 and 2021

Converts a vector of LSOA codes from one vintage to the other with the bundled ONS lookup (lamp_lsoa_lookup()) and reports how many areas were unchanged, split, merged or complex. From 2011 to 2021 each code maps to its best-fit 2021 LSOA. From 2021 to 2011 unchanged and split LSOAs map to their single parent; a 2021 LSOA formed by a merger maps to the first of its parents in code order, so lsoa21 panels are the recommended target.

Usage

lamp_revintage(codes, from = c("lsoa11", "lsoa21"), to = c("lsoa21", "lsoa11"))

Arguments

codes

A character vector of LSOA codes.

from, to

The vintages, "lsoa11" or "lsoa21".

Value

A list with codes (the mapped vector, NA where a code is not in the lookup) and summary (counts of records and distinct areas by change type and the share of areas that were split or merged).

See also

Other panel: lamp_adjacency(), lamp_adjacency_from_nb(), lamp_boundaries(), lamp_changelog(), lamp_coverage(), lamp_panel(), lamp_population()

Examples

r <- lamp_revintage(c("E01000001", "E01000002", "E01033768"), from = "lsoa11", to = "lsoa21")
r$codes
#> [1] "E01000001" "E01000002" "E01033768"
r$summary$share_split_or_merged
#> [1] 0