This paper proposes a new concept which is called virtual map on the basis of structure analysis and organization of spatial data.

本文在分析现有空间数据的组织、管理方法的基础上提出虚拟图幅的概念，并详细介绍了基于此对空间数据的组织方法。

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This paper proposes a new concept which is called virtual map on the basis of structure analysis and organization of spatial data.

本文在分析现有空间数据的组织、管理方法的基础上提出虚拟图幅的概念，并详细介绍了基于此对空间数据的组织方法。

youdao