看看帮助吧 overlap 在很多时候和partition 的确效果是一样的 partiton可以在不同维数的元素间进行吧
The partition commands will join two or more entities to create three or more new entities that encompass all parts of the originals. The end result is similar to an "overlap" operation if the overlap is of the same dimensionality as the original entities. However, unlike the overlap operations, non-overlapping input entities will not be deleted.
发表于 2006-10-24 21:45
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