1.利用Python通過經緯度計算兩地實際距離
①公式計算兩點間距離(m)
from math import radians, cos, sin, asin, sqrt
def geodistance(lng1,lat1,lng2,lat2):
#lng1,lat1,lng2,lat2 = (120.12,30.28,115.86,28.74)
lng1, lat1, lng2, lat2 = map(radians, [float(lng1), float(lat1), float(lng2), float(lat2)]) #經緯度轉換成弧度
dlon=lng2-lng1
dlat=lat2-lat1
a=sin(dlat/2)**2 + cos(lat1) * cos(lat2) * sin(dlon/2)**2
distance=2*asin(sqrt(a))*6371*1000 # 地球平均半徑,6371km
distance=round(distance/1000,3)
return distance
②調用geopy包
from geopy.distance import geodesic
print(geodesic((30.28,120.12), (28.74,115.86)).m) #計算兩個座標直線距離
print(geodesic((30.28,120.12), (28.74,115.86)).km)