Download a shapefile of the US coastline into R
coastline(year = NULL, ...)The year of the dataset (defaults to 2020)
arguments to be passed to the underlying `load_tiger` function, which is not exported.
Options include class, which can be set to "sp" (the default) or "sf" to
request sp or sf class objects, and refresh, which specifies whether or
not to re-download shapefiles (defaults to FALSE).).
Other water functions:
area_water(),
linear_water()