Plotting Länder in R Maps Bibliothek: Graue Grenzen mit FILL = TRUE

Question

Ich versuche, Länder in R Maps zu plotten. Wenn ich jedoch FILL = TRUE verwende, werden alle Ländergrenzen schwarz dargestellt. Ich will sie in Grau. Das ist mein Code:

library(maps)  # Provides functions that let us plot the maps 
library(mapdata) # Contains the hi-resolution points that mark out the Cnt 


countries=c("Argentina","Armenia","Australia","Bahrain","Belgium","Botswana","Bulgaria","Canada", "Chile","Tawain", "Croatia","Cyprus", "Czech Republic", "Denmark","Egypt","UK:Great Britain","Finland", "France", "Georgia", "Germany", "China:Hong Kong", "Hungary", "Indonesia", "Iran", "Ireland", "Israel", "Italy", "Japan", "Jordan", "Kazakhstan", "Korea", "Kuwait", "Lebanon", "Lithuania", "Malaysia", "Malta", "Morocco", "Netherlands", "New Zealand", "UK:Northern Ireland", "Norway", "Oman", "Palestine", "Poland", "Portugal", "Qatar", "Russia", "Saudi Arabia", "Serbia", "Singapore", "Slovak Republic", "Slovenia", "South Africa", "Spain", "Sweden", "Thailand", "Turkey", "United Arab Emirates", "USA")     

map('world', resolution=1, col="darkgray") 
map('world', countries, resolution=1, fill = T, col = "royalblue", add = T) 
map('world', resolution=1,col="darkgray", add=TRUE) 

Irgendwelche Ideen werden geschätzt.

Dank Jº

Answer 1

Um die Farbe der Grenzen zu ändern, fügen Sie das Argument border = 'dunkelgrau'. Dieses Argument ist in der Manpage für 'map' nicht explizit aufgeführt, da es sich tatsächlich um ein Argument für den Aufruf von 'polygon' handelt. Es wird jedoch im '...' - Segment der Manpage erwähnt.

map('world', countries, resolution=1, fill = T, col = "royalblue", border="darkgrey", add = T)