Firstly, the request of vector map data is summarized, such as color-setting standard, attribute definition of topographic feature, etc.

首先对入库的矢量图形数据要求做了概述，如要素的分层设色标准、地形图要素属性项定义等；

youdao

Firstly, the request of vector map data is summarized, such as color-setting standard, attribute definition of topographic feature, etc.

首先对入库的矢量图形数据要求做了概述，如要素的分层设色标准、地形图要素属性项定义等；

youdao