在PHP中计算多边形的纬度经度中心点 [英] Computing latitude longitude center point of a Polygon in PHP

问题描述

我有一组多边形的点(存储为经度/经度)，我想在PHP中计算该多边形的经度/经度中心点.

I have a set of points (stored as lat/lon) for a polygon, I want to compute the lat/lon center point of the polygon in PHP.

基本上与Google Maps中的getCenter()函数执行相同的操作

Basically to do the same thing as the getCenter() function in Google Maps LatLngBounds.

关于如何实现这一目标的任何想法?

Any ideas on how I can achieve this?

推荐答案

您正在寻找的是

What you are looking for is the centroid of the polygon - which is pretty easy to compute. If you are using latitude/longitude the matter is complicated by the fact the the polygon is actually on the surface of a sphere (ellipsoid).

顺便说一句，为什么不只看一下Google api javascript代码?

As an aside, why not just look at the Google api javascript code?

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