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我的 geojson 文件中有自相交的多边形。所以我使用 shapely lib 来修复它。代码是这样的：

clean = geom.buffer(0)

大部分多边形都已正确处理，但仍有少数多边形返回空，其坐标为空数组。

结果几何“干净”删除多边形但保留线。

多边形如下： 自相交多边形

geojson格式的功能：

      {
"type": "FeatureCollection",
"name": "wrong",
"crs": { "type": "name", "properties": { "name": "urn:ogc:def:crs:OGC:1.3:CRS84" } },
"features": [
{ "type": "Feature", "properties": { "value": 98 }, "geometry": { "type": "Polygon", "coordinates": [ [ [ 117.071654, 40.213989 ], [ 117.071654, 40.213965 ], [ 117.071643, 40.213956 ], [ 117.071643, 40.21394 ], [ 117.071632, 40.213932 ], [ 117.071632, 40.213915 ], [ 117.071621, 40.213907 ], [ 117.071621, 40.213883 ], [ 117.071611, 40.213875 ], [ 117.071611, 40.213858 ], [ 117.0716, 40.21385 ], [ 117.0716, 40.213834 ], [ 117.071589, 40.213825 ], [ 117.071589, 40.213801 ], [ 117.071579, 40.213793 ], [ 117.071579, 40.213784 ], [ 117.071568, 40.213776 ], [ 117.071546, 40.213776 ], [ 117.071536, 40.213784 ], [ 117.071514, 40.213784 ], [ 117.071514, 40.213686 ], [ 117.071525, 40.213678 ], [ 117.071525, 40.213563 ], [ 117.0716, 40.213563 ], [ 117.071611, 40.213555 ], [ 117.071697, 40.213555 ], [ 117.071707, 40.213547 ], [ 117.071697, 40.213539 ], [ 117.071697, 40.21353 ], [ 117.071675, 40.213514 ], [ 117.071782, 40.213514 ], [ 117.071804, 40.21353 ], [ 117.071815, 40.21353 ], [ 117.071847, 40.213555 ], [ 117.072244, 40.213555 ], [ 117.072244, 40.213752 ], [ 117.072093, 40.213752 ], [ 117.072083, 40.213743 ], [ 117.071911, 40.213743 ], [ 117.071879, 40.213768 ], [ 117.071868, 40.213768 ], [ 117.071847, 40.213784 ], [ 117.071664, 40.213784 ], [ 117.071654, 40.213793 ], [ 117.071654, 40.213989 ] ] ] } }
]
}

如何擦除“线”而只保留橙色多边形？</p>

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