On 22/05/2007 2:58 PM, Maja Schroeter 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?
How about this: library(mapdata) map("worldHires", "Germany") map.cities(country="Germany") Berlin <- subset(world.cities, name=="Berlin" & country.etc=="Germany") Munich <- subset(world.cities, name=="Munich" & country.etc=="Germany") segments(Berlin$long, Berlin$lat, Munich$long, Munich$lat) Duncan Murdoch ______________________________________________ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.