重点研究了实现线状符号及面状符号的快速算法：画线算法是实现线状符号的理论基础。
In this paper, the author goes deep into the character and composition rule of point, line and area symbols, and the definition of Map symbol Base is brought forward.
该文分析了GIS中矢量线状符号的特点与基本构成，提出了一种高效且通用的矢量线状符号的填充算法。
This paper makes an analysis of the characteristics of vector linear symbol and its basic components in GIS field, and puts forward a general filling algorithm.
本文根据线状要素地理信息表达的需要，对线状符号进行了分类，在分析了线状符号的视觉变量之后，给出了其图案单元的数据结构。
The linear symbol is classified according to the demand for symbol expressing, besides the data-structure of pattern cell of linear symbols is given combining with its visual variable.
本文根据线状要素地理信息表达的需要，对线状符号进行了分类，在分析了线状符号的视觉变量之后，给出了其图案单元的数据结构。
The linear symbol is classified according to the demand for symbol expressing, besides the data-structure of pattern cell of linear symbols is given combining with its visual variable.
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