polygon映射,得出数据从属关系

Imefungwa Ilichapishwa Jul 14, 2015 Kulipwa wakati wa kujifungua
Imefungwa Kulipwa wakati wa kujifungua

open street map 里的数据用polygon表示区位,现在想通过polygon映射,把若干个表综合起来,像一般的数据库多表查询,通过多个表共有的ID,将标合并。

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