多边形点符自动填充是数字地图制图、电子地图制作和GIS中不可缺少的功能。
It is the basic function in the digital cartographic, electronic cartographic and GIS, the polygon be filled with point symbol.
以数字制图为内容，阐述了利用计算机制作应用于城市规划的数字地图的原理和方法。
This paper describes the principles and techniques of computer mapping oriented to the urban planning.
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