获取GeoPandas中几何之间的相交计数 [英] Getting counts of intersections between geometries in GeoPandas

问题描述

是否可以使用GeoPandas对象获取两个几何之间的相交计数?也就是说，我要计算一个GeoDataFrame中与另一个GeoDataFrame中的每个多边形相交的多边形或线串的数量.在浏览GeoPandas文档时，我没有看到一种简便的方法，但是想在使用低级工具之前先进行检查.

Is it possible to get counts of intersections between two geometries using GeoPandas objects? That is, I want to count up the number of polygons or line strings in one GeoDataFrame that intersect with each polygon in another GeoDataFrame. I did not see an easy way of doing this while browsing the GeoPandas docs, but wanted to check before moving on to lower-level tools.

推荐答案

您要进行空间连接:geopandas.tools.sjoin().

You want a spatial join: geopandas.tools.sjoin().

在此Jupyter笔记本中有一个示例 — 空间连接部分.这会将一组点(midpoints)计入一组多边形(bins)中.两种几何形状均定义GeoDataFrame.

There's an example in this Jupyter Notebook — look at the section called Spatial join. This is counting a set of points (midpoints) into a set of polygons (bins). Both geometries define a GeoDataFrame.

在撰写本文时，tools.sjoin()不在当前版本的geopandas中.我无法在其任何分支机构中构建geopandas.tools，但无论如何我都已对其进行了修复-打开PR .

At the time of writing, tools.sjoin() is not in the current release of geopandas. I couldn't get geopandas.tools to build in any of their branches, but I fixed it — for me anyway — in my fork. My fix is an open PR.

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