Add a Polygon to a Map

mapPolygon adds a polygon to an existing map.

mapPolygon(
  longitude,
  latitude,
  density = NULL,
  angle = 45,
  border = NULL,
  col = NA,
  lty = par("lty"),
  ...,
  fillOddEven = FALSE
)

Arguments

longitude

numeric vector of longitudes of points defining the polygon, to be plotted, or an object from which both longitude and latitude can be inferred (e.g. a coastline file, or the return value from mapLocator()), in which case the latitude argument are ignored.

latitude

numeric vector of latitudes of points to be plotted (ignored if both longitude and latitude can be determined from the first argument).

density, angle, border, col, lty, ..., fillOddEven

handled as polygon() handles the same arguments.

See also

A map must first have been created with mapPlot().

Other functions related to maps: formatPosition(), lonlat2map(), lonlat2utm(), map2lonlat(), mapArrows(), mapAxis(), mapContour(), mapCoordinateSystem(), mapDirectionField(), mapGrid(), mapImage(), mapLines(), mapLocator(), mapLongitudeLatitudeXY(), mapPlot(), mapPoints(), mapScalebar(), mapText(), mapTissot(), oceCRS(), oceProject(), shiftLongitude(), usrLonLat(), utm2lonlat()

Author

Dan Kelley

Examples

# \donttest{
library(oce)
data(coastlineWorld)
data(topoWorld)

# Bathymetry near southeastern Canada
par(mfrow = c(1, 1), mar = c(2, 2, 1, 1))
cm <- colormap(zlim = c(-5000, 0), col = oceColorsGebco)
drawPalette(colormap = cm)
lonlim <- c(-60, -50)
latlim <- c(40, 60)
mapPlot(coastlineWorld,
    longitudelim = lonlim,
    latitudelim = latlim, projection = "+proj=merc", grid = FALSE
)
mapImage(topoWorld, colormap = cm)
mapPolygon(coastlineWorld[["longitude"]], coastlineWorld[["latitude"]], col = "lightgray")

# }