main.py 文件源码

def get_resolution():
    EARTH_CIRCUMFERENCE = 40000
    RES = .1
    LAT_RES = 360*RES/EARTH_CIRCUMFERENCE

    CIRCUM_AT_LATITUDE = EARTH_CIRCUMFERENCE*sp.cos(sp.pi/180*LONDON_LATS[0])
    LON_RES = 360*RES/CIRCUM_AT_LATITUDE

    return (LON_RES, LAT_RES)