Question to be Answered:
1. how to make the invalid geometry to be autoAleaned?
isvalid: how to make the geometry valid automatically?
2. Is this possible? multipolygon U polygon = polygon and why?
本文探讨了如何自动修正无效几何的问题,使之变得有效,并讨论了多边形与复合多边形之间的逻辑运算可能性。
Question to be Answered:
1. how to make the invalid geometry to be autoAleaned?
isvalid: how to make the geometry valid automatically?
2. Is this possible? multipolygon U polygon = polygon and why?

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