The error sources of some data acquisition methods are discussed in digital cartography, and these errors are analysed.
讨论了数字制图几种数据采集方式的误差来源，并对这些误差进行了分析评价。
Abstract: the error sources of some data acquisition methods are discussed in digital cartography, and these errors are analysed.
文摘：讨论了数字制图几种数据采集方式的误差来源，并对这些误差进行了分析评价。
Since last 90s, our country began to research and develop the digital image map cartography technology, which is applied in mapping, land, agriculture, ocean, etc more or less.
上世纪九十年代以来，我国也相继开展了数字影像地图制图技术研究开发工作，在测绘、土地、林业、农业、海洋等部门和行业都有不同程度的应用。
The new challenge is just what cartography generalization now confronts with in digital environment.
制图综合是地图学的一个核心和难点问题。
The new challenge is just what cartography generalization now confronts with in digital environment.
制图综合是地图学的一个核心和难点问题。
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