Decentralized World map — robinmap • robinmap

This function maps World countries in the Robinson projection system (by default) and centers the map on a meridian different from Greenwich. It uses the Natural Earth layer as a base map. All components of the map can be customized (color, line type, etc.).

robinmap(
  res = "small",
  crs = NULL,
  center = 0,
  lon = seq(-180, 180, by = 40),
  lat = seq(-90, 90, by = 30),
  border = "white",
  border_box = col,
  col = "#7D7D7D",
  col_box = "#A3C6C7",
  col_grat = col,
  lwd = 0.25,
  lwd_box = 1,
  lwd_grat = lwd,
  lty = 1,
  lty_box = lty,
  lty_grat = 3,
  ...
)

Arguments

res: a character of length 1. One among 'small', 'medium', 'large'. See ?rnaturalearth::ne_countries for further details.
crs: a character of length 1. The Coordinate Reference System (CRS) of the map. See ?sp::CRS for further details. N.B. the CRS must contain a parameter +lon_0=0 in its definition.
center: a numeric of length 1. The longitude of center of the map. Must be higher or equal to 0 and lower than 359.
lon: a numeric vector. The longitudes to add meridians.
lat: a numeric vector. The latitudes to add parallels.
border: the color of countries border.
border_box: the color of map frame.
col: the color of countries.
col_box: the color of map frame (i.e. oceans).
col_grat: the color of graticules.
lwd: the lines width of countries border.
lwd_box: the lines width of map frame.
lwd_grat: the lines width of graticules.
lty: the line type of countries border.
lty_box: the line type of map frame.
lty_grat: the line type of graticules.
...: other graphical parameters. See ?par.

Value

The world layer as an sf object.

Examples

if (FALSE) {
## Robinson World map centered on Greenwich ----
robinmap()

## Robinson World map centered on Pacific ocean ----
robinmap(center = 160)

## Change projection system ----
crs <- paste0("+proj=eck4 +lon_0=0 +x_0=0 +y_0=0 +ellps=WGS84 ", 
              "+datum=WGS84 +units=m +no_defs")

robinmap(center = 160, crs = crs)
}