Pass list to google distance matrix, returning only single value-CodePudding

I want to use Googles distance matrix API to measure the road distance between multiple addresses and a single address. I have a list of origin Latitudes and Longitudes (list_o), and destination Latitudes and longitudes (list_d). My Api key is set up.

list_o

[(51.268369, -1.361543),
 (51.368369, -1.361043),
 (51.062992, -1.250635),
 (51.910508, -1.314208),
 (51.233251, -1.551402)]

list_d

[(53.423451, -1.462141),
 (53.483451, -1.172141),
 (51.423451, -1.262141),
 (52.623451, -1.246211),
 (52.323451, -1.462141)]

if I pass in the lists of addresses

result = gmaps.distance_matrix(list_o, list_d, mode='walking')["rows"][0]["elements"][0]["distance"]["value"]

I only get a single result, eg 34000 metres = 34km , which looks correct. I have tried appending the result to a list and it still only comes up with one result.

With

gmaps.distance_matrix(list_o, list_d, mode='walking')["rows"][0]["elements"]

I am getting 10 values (the full size of the df, above I only showed the first 5).

{'distance': {'text': '34.0 km', 'value': 34014},
  'duration': {'text': '7 hours 6 mins', 'value': 25554},
  'status': 'OK'},
 {'distance': {'text': '34.0 km', 'value': 34014},
  'duration': {'text': '7 hours 6 mins', 'value': 25554},
  'status': 'OK'},
 {'distance': {'text': '34.0 km', 'value': 34014},
  'duration': {'text': '7 hours 6 mins', 'value': 25554},
  'status': 'OK'},
 {'distance': {'text': '34.0 km', 'value': 34014},
  'duration': {'text': '7 hours 6 mins', 'value': 25554},
  'status': 'OK'},
 {'distance': {'text': '34.0 km', 'value': 34014},
  'duration': {'text': '7 hours 6 mins', 'value': 25554},
  'status': 'OK'},
 {'distance': {'text': '34.0 km', 'value': 34014},
  'duration': {'text': '7 hours 6 mins', 'value': 25554},
  'status': 'OK'},
 {'distance': {'text': '34.0 km', 'value': 34014},
  'duration': {'text': '7 hours 6 mins', 'value': 25554},
  'status': 'OK'},
 {'distance': {'text': '34.0 km', 'value': 34014},
  'duration': {'text': '7 hours 6 mins', 'value': 25554},
  'status': 'OK'},
 {'distance': {'text': '34.0 km', 'value': 34014},
  'duration': {'text': '7 hours 6 mins', 'value': 25554},
  'status': 'OK'},
 {'distance': {'text': '34.0 km', 'value': 34014},
  'duration': {'text': '7 hours 6 mins', 'value': 25554},
  'status': 'OK'}]

However they are all the same value.

CodePudding user response：

I believe what you want to do is using:

list_o

[(51.668369, -1.361043),
 (51.668369, -1.361043),
 (51.662992, -1.270635),
 (51.610508, -1.314208),
 (51.733251, -1.351402)]

and:

list_d

[(52.423451, -1.462141)]

And then call:

results = gmaps.distance_matrix(list_o, list_d, mode='walking')

The results you are looking for are:

# Distance between first origin and destination.
# I.e.: distance (51.668369, -1.361043) -> (52.423451, -1.462141)
results['rows'][0]['elements'][0]

#... and so on

In other words, results['rows'][i]['elements'][0] is the distance of location i to the destination.

gmaps.distance_matrix calculates the distance between the origins and each of the destinations.