GIS计算点与多边形/边界之间的距离 [英] gis calculate distance between point and polygon / border

问题描述

我想使用python/ shape 计算点与一个国家的边界​​之间的距离.它应该工作得很好point.distance(poly)例如在此处

解决方案

根据 geopandas 文档，GeoSeries是几何的矢量(在您的情况下， 0(POLYGON ... 告诉您只有一个对象，但它仍然是矢量).应该有一种获取第一个几何的方法元素.GeoSeries类实现了 __ getitem __ 方法，因此 austriaBorders.geometry [0] 应该会为您提供所需的几何.因此，请尝试使用 point.distance(austriaBorders.geometry [0]).

如果只需要到一个点的距离，则 GeoSeries 实现了 distance 方法，但是它将返回一个包含到每个包含的几何图形的距离的向量(根据文档).

I want to calculate the distance between a point and the border of a country using python / shapely. It should work just fine point.distance(poly) e.g. demonstrated here Find Coordinate of Closest Point on Polygon Shapely but using geopandas I face the issue of: 'GeoSeries' object has no attribute '_geom'

What is wrong in my handling of the data? My border dataset is from http://www.gadm.org/

解决方案

According to geopandas documentation, a GeoSeries is a vector of geometries (in your case, 0 (POLYGON... tells that you have just one object, but it is still a vector). There should be a way of getting the first geometry element. GeoSeries class implements the __getitem__ method, so austriaBorders.geometry[0] should give you the geometry you need. So, try with point.distance(austriaBorders.geometry[0]).

If you only need the distance to a point, the GeoSeries has the distance method implemented, but it will return a vector with the distance to each geometry it contains (according to documentation).

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