Python包/函数使用地理坐标获取另一个多边形中一个多边形覆盖的百分比面积

Question

I am looking for a solution to find the percentage area covered by a polygon inside another polygon, from geo coordinates using python. The polygon can be either fully reside inside the other one or a portion of the second polygon. Is there a solution to this. Please advice.

Answer 1

Percentage is just area of intersection over area of the (other) polygon: area(intersection)/area(polygon2) .

Basically any of geometry packages should be able to compute this, as they all support area and intersection functions: I think Geopandas, SymPy, Shapely (and others I missed) should be able to do this. There might be differences in supported formats.

You did not specify what Geo coordinates you use though. I think Geopandas and SymPy support only 2D maps (flat map) - meaning you need to use appropriate projection to get exact result, and Shapely works with spherical Earth model.