digital map data的意思|示意

Therefore how to perform the map data quality control becomes a very important problem in the digital information engineering of military surveying and mapping.

因此如何进行地图数据质量控制就成为军事测绘数字信息工程中一个十分重要的问题。

Data frame was designed to store digital map data.

规定了数字地图分区存放的数据结构。

Digital navigation map is fundamental part for VNS, so map data actuality will directly exert an influence on navigation accuracy.

导航电子地图作为导航系统的重要基础，数据的现势性如何直接影响到导航的准确与否。

This paper analyzes the problems in data input of digital map publish especially in vector data input, and indicates the importance of multi-source vector data use.

文中分析了当前数字地图出版中数据输入尤其在矢量数据输入方面存在的诸多问题，指出了多源矢量数据利用的重要性。

Then, by applying this algorithm to the picture after pretreatment, we realize its edge-detection and get vector graphical data. As a result, we solve digital problem of geological contour-map.

然后，对预处理后的图像运用此算法实现了地质等值线图的边缘探测，并得到矢量图形数据，从而解决了地质等值线图件数字化问题。

Relying on database and geographic data engine discusses and designs the organization and management of multi-source data in digital map publishing system.

以数据库为依托，借助地理数据引擎，探讨并设计了对多源数据在数字地图出版系统中组织及管理；