地理熊猫空间连接 - 属性错误:'NoneType'对象没有属性'bounds'



我有以下地理数据帧,对应于常规网格:

        id   grid_id    geometry
0       48         0    (POLYGON ((2.052457758079306 41.42493869117656...
1       49         1    (POLYGON ((2.052470852112577 41.42403805731954...
2       215        2    (POLYGON ((2.053641274433816 41.42584917461342...
3       216        3    (POLYGON ((2.053654352531821 41.42494854059127...
4       217        4    (POLYGON ((2.053667430035439 41.42404790642426...

和点地理数据帧:

    id_act  geometry
0   4001    POINT (2.183026563657264 41.37459702541483)
1   4003    POINT (2.183012216695291 41.37471411724238)
2   4003    POINT (2.183128113845906 41.37472901746361)
3   3002    POINT (2.182820482338962 41.37482095671629)
4   4003    POINT (2.182945418252172 41.37482221760939)

我正在通过空间联接合并两个数据帧:

id_grid = gpd.sjoin(gdf, grid, how="inner", op='intersects')

但它返回以下AttributeError

AttributeError: 'NoneType' object has no attribute 'bounds'

关键是当我调用函数时:

grid.bounds

它产生:

        minx         miny       maxx         maxy
0   2.052458    41.424038   2.053667    41.424949
1   2.052471    41.423137   2.053681    41.424048
2   2.053641    41.424949   2.054851    41.425859
3   2.053654    41.424048   2.054864    41.424958
4   2.053667    41.423147   2.054877    41.424058
5   2.053681    41.422247   2.054890    41.423157

调用type(gdf.geometry[0])type(grid.geometry[0])会得到:

shapely.geometry.point.Point
shapely.geometry.multipolygon.MultiPolygon

分别。

有谁知道错误在哪里?

您的点地理数据框很可能包含空几何。这就是为什么你会得到"NoneType"。您可以通过以下方式删除它们

points_clean = points[points.geometry.type == 'Point']

它将在几何列中仅保留Point类型的行。然后,您的空间联接应该可以正常工作。您的面图层中也可能有一个空几何。在这种情况下,只需将上面的代码从 Point 调整为 PolygonMultiPolygon .

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