1、
> library(REmap) > options(remap.ak = "此處輸入個人秘鑰") > city_vec = c("Beijing","Haerbin","Shanghai","Guangzhou") > get_city_coord("Shanghai") [1] 121.48054 31.23593
> get_geo_position (city_vec) lon lat city 1 116.4134 39.91092 Beijing 2 126.5416 45.80882 Haerbin 3 121.4805 31.23593 Shanghai 4 113.2714 23.13534 Guangzhou