Add an iso3 column to a data set

Adds an iso3 column that holds the ISO 3166-1 alpha-3 country code, and changes x in place. csdata carries Norwegian data only, so the value is "nor" on every row. The function does not read the contents of x, so x gains the column even when it has no location_code column.

Usage

add_iso3_to_data_set(x)

Arguments

x

A data.table. Only a data.table method exists, so any other class raises "no applicable method".

Value

x, invisibly, with a new iso3 column holding "nor" on every row.

See also

No vignette covers this function. location_code_to_iso3() returns the same values as a vector instead of writing them onto x.

Other data set column adders: add_granularity_geo_to_data_set()

Examples

library(data.table)
data <- data.table(location_code = c("nation_nor", "county_nor03", "blah"))
csdata::add_iso3_to_data_set(data)
print(data)
#>    location_code   iso3
#>           <char> <char>
#> 1:    nation_nor    nor
#> 2:  county_nor03    nor
#> 3:          blah    nor