离线反向地理编码解决方案
我有一个带有纬度/经度的地点数据库，并且我有带有纬度/经度的传入请求。我想在数据库中找到与传入请求最接近的纬度/经度。是否有任何现有的库或算法可以做到这一点？在线搜索不断将我指向谷歌的反向地理编码库，这并不完全是我想要的。
一如既往，任何帮助都会受到极大的赞赏。 :)
I have a database of places with lat/lng and I have incoming requests with lat/lng. I'd like to find the closest lat/lng in the database to the incoming request. Is there any existing library or algorithm for doing this? Searching online keeps pointing me to Google's reverse geocoding library which isn't quite what I had in mind.
As always, any help is absurdly appreciated. :)
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您实际上并不需要为此提供在线服务。只需应用正确的数学公式即可。
请参阅此处的一些示例（在 JavaScript 等中）...
http://www .movable-type.co.uk/scripts/latlong.html
另一个替代公式在这里...
http://wiki.answers.com/Q/What_is_the_formula_for_distance_using_latitude_and_longitude
You dont really need an online service for this. Just apply the correct mathematical formula.
See here for some examples (in JavaScript etc)...
http://www.movable-type.co.uk/scripts/latlong.html
Another alternative formula is here...
http://wiki.answers.com/Q/What_is_the_formula_for_distance_using_latitude_and_longitude