我可以在Python中使用geopy来获得高度吗?(经度/纬度) [英] Can I get the altitude with geopy in Python? (with Longitude/Latitude)

问题描述

有可能吗?

我尝试过:

from geopy.point import Point
from geopy import geocoders
[...]
p = Point(Latitude, Longitude)
lat, lon, altitude = p
height_metres = altitude

但是height_metres始终为0.

but height_metres is always 0.

推荐答案

请注意，使用地址解析器，您将需要一个Google海拔API密钥，该密钥现在需要启用了结算功能的项目(截至2018年7月).

Note that with geocoder you will need a Google elevation API key which now requires a project with billing enabled (as of July 2018).

或者，您可以使用开放式高程公共API.这是一个返回标高的示例函数(注意python 3.6用于字符串格式化):

As an alternative, you can use the open elevation public API. Here's an example function to return the elevation (Note python 3.6 used for string formatting):

import requests
import pandas as pd

# script for returning elevation from lat, long, based on open elevation data
# which in turn is based on SRTM
def get_elevation(lat, long):
    query = ('https://api.open-elevation.com/api/v1/lookup'
             f'?locations={lat},{long}')
    r = requests.get(query).json()  # json object, various ways you can extract value
    # one approach is to use pandas json functionality:
    elevation = pd.io.json.json_normalize(r, 'results')['elevation'].values[0]
    return elevation

请注意，API将来可能会更改，我无法评论数据的准确性，但目前它是Google的不错选择，抽查表明它可以正常工作.

Note, the API may change in the future and I can't comment on veracity of the data but currently it's a nice alternative to Google and spot checks suggest it works fine.

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