geo (version 1.4-3)

geoworld: Plots rough outline of the world.

Description

Plots roughly the outlines of those countries which have borders intersecting the current plot initialized by geoplot. The countries can also be filled.

Usage

geoworld(regions = ".", exact = FALSE, boundary = TRUE, fill = FALSE, color = 1, lwd = 1, lty = 1, plot = TRUE, type = "l", pch = ".", database = "world", return.data = FALSE, outside = FALSE, allowed.size = 80000)

Arguments

regions

Allows plotting only a certain part of the world to speed up the function, such as regions = "iceland". Default is plotting what is insidie the map.

exact

Draws a more exact plot.

boundary

If true country boundaries are drawn. Default is false.

fill

If true countries are filled with a color. Default is false.

color

Default is 1 (usually black).

lwd

Linewidth, default is 1.

lty

Linetype, default is 1.

plot

If false a plot is not drawn. Default is true.

type

If lines or points should be potted, see type for geoplot.

pch

The character to be used for plotting, see par.

database

The database the world plot is to be taken from. Currently there are two possible databases world and worldHires. world is in the map library and worlHires in the mapdata library and is much more precies.

return.data

If true those points used to make the in the plot are return, default is FALSE. Can be used to save the coastlines of specified countries.

outside

If TRUE data are plotted outside the borders. Default is FALSE.

allowed.size

Maximum size of polygon that can be filled. Default is 80 000 which is rather large polygon but this value is rapidly changing by more powerful hardware.

Value

default none, see option return data.

Side Effects

the outlines of all countries who intersect current plot are drawn.

See Also

geoplot, fill.outside.border, geopolygon, par.

Examples

## Not run:      geoplot(xlim = c(0, -53), ylim = c(53, 75))
#      geoworld()
# 
#      # Should plot in all countries who intersect the plot draw
#      # with geoplot.
# 
# # The packages maps and mapdata need to be installed
# # worldHires is a very detailed database of coastlines from the
# # package mapdata.  Could be problematic if used with fill = TRUE)
# # Allowed.size is the maximum allowed size of polygons.
# library(map) # world coastlines and programs
# library(mapdata) # more detailed coastlines
# geoplot(xlim = c(20, 70), ylim = c(15, 34))
# geoworld(database = "worldHires", fill = TRUE, col = 30, allowed.size = 1e5)
# 
# geoplot(xlim = c(20, 70), ylim = c(15, 34), dlat = 10, dlon = 10)
# geoworld(database = "world", fill = TRUE, col = 30) #
# 
# geoplot(xlim = c(-10, 70), ylim = c(71, 81), b0 = 80,
#   dlat = 2, dlon = 10) # 0 must be high here else
# geoworld(database = "world", fill = TRUE, col = 30) #the plot fails.
# 
# # Lambert projection,
# geoplot(xlim = c(-10, 70), ylim = c(71, 81),
#   dlat = 2, dlon = 10, projection = "Lambert")
# geoworld(database = "world", fill = TRUE, col = 30)
# ## End(Not run)