Add is_former_country flag to referendum data

Augments data with an additional column is_former_country indicating whether or not the column country_code holds an ISO 3166-3 alpha-4 code referring to a historical country which ceased to exist. is_former_country being FALSE means country_code holds an ISO 3166-1 alpha-2 code instead.

Usage

add_former_country_flag(data)

Arguments

data

RDB referendum data as returned by rfrnds(). A data frame that at minimum contains the column country_code (with ISO 3166-1 alpha-2 or ISO 3166-3 alpha-4 codes).

Value

A tibble.

See also

Other referendum data augmentation functions: add_country_code_continual(), add_country_code_long(), add_country_name(), add_country_name_long(), add_period(), add_turnout(), add_urls(), add_world_regions()

Examples

rdb::rfrnds() |>
  rdb:::add_former_country_flag() |>
  dplyr::select(id,
                starts_with("country_"),
                is_former_country)
#> # A tibble: 17,889 × 4
#>    id                       country_code country_name  is_former_country
#>    <chr>                    <fct>        <fct>         <lgl>            
#>  1 670cd145c3cd67046058015c CH           Switzerland   FALSE            
#>  2 66fff490c3cd670460580111 LI           Liechtenstein FALSE            
#>  3 66ffdfe3c3cd6704605800fc CH           Switzerland   FALSE            
#>  4 66f686cfc3cd6704605800a0 CH           Switzerland   FALSE            
#>  5 66f68317c3cd67046058009c CH           Switzerland   FALSE            
#>  6 66d6da9cc3cd670460580053 CH           Switzerland   FALSE            
#>  7 66cde603c3cd67046057fff5 CH           Switzerland   FALSE            
#>  8 66c46f86c3cd67046057ff53 CH           Switzerland   FALSE            
#>  9 66c46cf6c3cd67046057ff4f CH           Switzerland   FALSE            
#> 10 66c46c3ac3cd67046057ff4b CH           Switzerland   FALSE            
#> # ℹ 17,879 more rows