我想在已经添加了一些小节的choropleth上添加国家标志和国家名称。
一些标准的带条的节流孔:
library(cartography)
# Some standard data on Europe
data(nuts2006)
# the choropleth
choroLayer(spdf = nuts0.spdf, df = nuts0.df, var = "pop2008" , legend.pos = "n")
# Adding Bars onto the map
propSymbolsLayer(spdf = nuts0.spdf, df = nuts0.df,
var = "pop2008", symbols = "bar", col = "#920000",
legend.pos = "right", legend.title.txt = "Total\npopulation (2008)",
legend.style = "c")
如果它可以接近this,那就太好了。但是显然,我仍然希望它具有一个歌舞ple和国名;)