[R] German Map in package maps

Ray Brownrigg Ray.Brownrigg at mcs.vuw.ac.nz
Tue May 22 22:00:04 CEST 2007

On Wed, 23 May 2007, Maja Schröter wrote:
> Hello everybody,
> I'm an absolute newbe in R, so please be gentle to me.
> I am looking for a german map in the package maps by Becker and Wilks.
> After that I want to draw the German cities from world.cities of this
> package in the map and want to draw further a line from Berlin to Munich.
> Has anybody an idea?
There is no germany-only map in the maps databases, but the following might be 
close to what you want:

> library(mapdata)		# the world database in the maps package
					# probably isn't high enough resolution
> map("worldHires", "Germany")
> map.cities(country="Germany", minpop=1e6, capital=1)
> lines(world.cities[world.cities$name %in% c("Berlin", "Munich") & 
world.cities$country=="Germany", c("long", "lat")])
Ray Brownrigg

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