在座標R中列出城市

Question

我有一個座標表，我需要用R列出相應的城市。任何建議???

我曾嘗試：

library(maps) 

cities <- dataet 
cities[is.na(cities)] <- 0 
map.where("world", dataset$lon, dataset$lat, fill==TRUE) 

Answer 1

這裏是一個快速的解決方案，以扭轉ggmap天氣預報

library(ggmap) 

> coords 
     lon  lat 
1 37.61730 55.75583 
2 116.40739 39.90421 
3 -77.03687 38.90719 

res <- lapply(with(coords, paste(lat, lon, sep = ",")), geocode, output = "more") 


> transform(coords, city = sapply(res, "[[", "locality")) 
     lon  lat  city 
1 37.61730 55.75583  Moskva 
2 116.40739 39.90421 Beijing 
3 -77.03687 38.90719 Washington