用于存储和查询地理坐标的 Python 模块

2022-01-14 00:00:00 python coordinates geospatial geolocation geographic-distance

问题描述

是否有一个 Python 模块，我可以在其中创建具有地理位置坐标(纬度和经度)的对象，并在给定坐标的 5 公里距离(即半径)内查询所有对象?

Is there a Python module where I can create objects with a geographical location coordinate (latitude and longitude), and query all the objects for ones which are within a 5km distance (i.e. radius) of a given coordinate?

我一直在尝试将纬度和经度作为键存储在字典中(因为它们是通过键索引的)并使用一些测距算法来查询它们.但这感觉就像一个可怕的黑客攻击.

I've been trying to store the latitude and longitude as keys in dictionaries (as they're indexed by key) and use some distance finding algorithms to query them. But this feels like a horrible hack.

基本上类似于 PostGIS for PostgreSQL，但都在我的 Python 应用程序的内存中.

Essentially something like PostGIS for PostgreSQL, but all within my Python app's memory.

解决方案

是的，试试 geopy.

import geopy
import geopy.distance

pt1 = geopy.Point(48.853, 2.349)
pt2 = geopy.Point(52.516, 13.378)

dist = geopy.distance.distance(pt1, pt2).km
# 878.25

之后您可以查询您的积分列表:

afterwards you can query your lists of points:

[pt for pt in points if geopy.distance.distance(orig, pt).km < 5.]

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