Plot a map to use as the base for other maps

Plot a map with lines for the United States, including islands.

map_base(x_min = -155, x_max = -115, y_min = 20, y_max = 48)

Arguments

x_min, x_max, y_min, y_max

Minimum and maximum values for the extent of the desired map. These need to be in decimal degrees. The default is to map the California Current from the U.S./Canada border to the U.S./Mexico border.

Value

A ggplot2::ggplot() object.

Author

Kelli F. Johnson

Examples

if (FALSE) { # \dontrun{
# Return a blank base map
map_base()
# TODO: example with map_base second
} # }