如果您的意思是海拔":某个区域的海拔应该是多少?点有高程，但有面积?好的，除非它是平坦的... ViewExtents显示一个区域，而不是一个点.

In case you mean "elevation": what should be the elevation for an area? A point has an elevation, but an area? Ok, except when it is flat... ViewExtents shows an area, not a point.

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