使用地理编码获取两个位置之间的距离

Question

我想使用 google API 查找两个位置之间的距离。我希望输出看起来像 - "The distance between location 1 and location 2 is 500 miles ( distance here is example purposes )"，但我如何才能获得所需的输出，因为当前程序正在显示各种输出（我无法使用它来获得所需的输出）。你们能告诉我方法吗，或者告诉我具体的步骤是什么？

   import urllib
   import json
   serviceurl = 'http://maps.googleapis.com/maps/api/geocode/json?'

   while True:
   address = raw_input('Enter location: ')
   if len(address) < 1 : break

   url = serviceurl + urllib.urlencode({'sensor':'false', 'address': address})
   print 'Retrieving', url
   uh = urllib.urlopen(url)
   data = uh.read()
   print 'Retrieved',len(data),'characters'

   try: js = json.loads(str(data))
   except: js = None
   if 'status' not in js or js['status'] != 'OK':
    print '==== Failure To Retrieve ===='
    print data
    continue

   print json.dumps(js, indent=4)

   lat = js["results"][0]["geometry"]["location"]["lat"]
   lng = js["results"][0]["geometry"]["location"]["lng"]
   print 'lat',lat,'lng',lng
   location = js['results'][0]['formatted_address']
   print location

Answer 1

Google 有一个特定的 api，叫做 Google Maps Distance Matrix API.

Distance & duration for multiple destinations and transport modes.
Retrieve duration and distance values based on the recommended route between start and end points.

如果您只需要地球上两点之间的距离，您可能需要使用 Haversine formula

Answer 2

如果您知道 lat 和 lon，请使用 geopy 包：

In [1]: from geopy.distance import great_circle

In [2]: newport_ri = (41.49008, -71.312796)

In [3]: cleveland_oh = (41.499498, -81.695391)

In [4]: great_circle(newport_ri, cleveland_oh).kilometers
Out[4]: 864.4567616296598

使用地理编码获取两个位置之间的距离

getting distance between two location using geocoding

python

google-api

python-2.7

google-geocoding-api