Retrieve Disputed-Territory Island And Reef Shapes — jp_disputed

Returns cartographic island/reef shapes for disputed territories or disputed maritime/EEZ-status areas discussed in Japan territorial-dispute references. These geometries are intentionally separate from the MLIT N03 administrative boundary data and are not authoritative legal boundary polygons.

Usage

jp_disputed_territories(
  territorial_disputes = TRUE,
  regions = c("prefectures", "prefecture", "municipalities", "municipality"),
  inset = TRUE,
  okinawa = TRUE,
  ogasawara = TRUE
)

Arguments

territorial_disputes: Which disputed-territory shapes to include. Use TRUE for all built-in shapes, FALSE for none, or a character vector containing one or more of "northern_territories", "okinotorishima", "senkaku", and "takeshima". Common aliases such as "kuril", "liancourt", "dokdo", and "diaoyu" are also accepted.
regions: Boundary level whose columns should be mirrored: prefectures or municipalities.
inset: Inset behavior. Use TRUE to move Okinawa and Ogasawara, FALSE for literal projected locations, or a character vector containing "okinawa" and/or "ogasawara".
okinawa: Whether Okinawa should be moved when inset includes it.
ogasawara: Whether Ogasawara should be moved when inset includes it.

Value

An sf data frame.

Source

Territory list based on https://en.wikipedia.org/wiki/Territorial_disputes_of_Japan. Shapes are derived from Natural Earth 1:10m land polygons and OpenStreetMap geometry.

Examples

if (FALSE) { # \dontrun{
jp_disputed_territories()
jp_disputed_territories(c("senkaku", "takeshima"))
} # }