jpmapdata contains boundary GeoPackage
files used by jpmap.
The package is intentionally separate from jpmap so
updates to map-drawing functionality do not require CRAN mirrors to
store the same boundary data again.
install.packages("jpmapdata")
install.packages("jpmap")
library(jpmap)
plot_jpmap("prefecture")
plot_jpmap("municipality", include = "Okinawa")The package currently includes:
jpmap_boundaries_2021.gpkg: Japan prefecture example
boundaries.jpmap_boundaries_2024_47.gpkg: official MLIT N03 2024
municipal boundaries for Okinawa Prefecture.For all-prefecture municipal boundaries, use
jpmap::jpmap_build_data() to build the national MLIT N03
file locally:
jpmap_build_data(year = 2024)The national 2024 GeoPackage is very large, so it is not
bundled in the first CRAN-facing jpmapdata package.
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