【Python学习】指定两点地理位置经纬度的距离计算

 1 #coding=utf-8 2  3 from math import * 4  5 # input Lat_A 纬度A 6 # input Lng_A 经度A 7 # input Lat_B 纬度B 8 # input Lng_B 经度B 9 # output distance 距离(km)10 def calcDistance(Lat_A, Lng_A, Lat_B, Lng_B):11     ra = 6378.140  # 赤道半径 (km)12     rb = 6356.755  # 极半径 (km)13     flatten = (ra - rb) / ra  # 地球扁率14     rad_lat_A = radians(Lat_A)15     rad_lng_A = radians(Lng_A)16     rad_lat_B = radians(Lat_B)17     rad_lng_B = radians(Lng_B)18     pA = atan(rb / ra * tan(rad_lat_A))19     pB = atan(rb / ra * tan(rad_lat_B))20     xx = acos(sin(pA) * sin(pB) + cos(pA) * cos(pB) * cos(rad_lng_A - rad_lng_B))21     c1 = (sin(xx) - xx) * (sin(pA) + sin(pB)) ** 2 / cos(xx / 2) ** 222     c2 = (sin(xx) + xx) * (sin(pA) - sin(pB)) ** 2 / sin(xx / 2) ** 223     dr = flatten / 8 * (c1 - c2)24     distance = ra * (xx + dr)25     return distance26 27 Lat_A=32.060255; Lng_A=118.796877 # 南京28 Lat_B=39.904211; Lng_B=116.407395 # 北京29 distance=calcDistance(Lat_A,Lng_A,Lat_B,Lng_B)30 PRint('(Lat_A, Lng_A)=({0:10.3f},{1:10.3f})'.format(Lat_A,Lng_A))31 print('(Lat_B, Lng_B)=({0:10.3f},{1:10.3f})'.format(Lat_B,Lng_B))32 print('Distance={0:10.3f} km'.format(distance))

(Lat_A, Lng_A)=(    32.060,   118.797)(Lat_B, Lng_B)=(    39.904,   116.407)Distance=   896.533 km