Vector data refers to data defined by geometric constructs, such as line segments representing a street or points representing single locations.
矢量数据指的是通过几何结构定义的数据，如线段表示街道，而点表示位置。
In this paper, the methods of drawing contour line from terrain map, the vector of contour line and generating elevation data from vector data are discussed.
论述了从地形图中提取等高线、对等高线矢量化以及通过矢量数据生成高程数据的实现方法。
Point, line and area are basic elements in GIS vector spatial data.
在矢量GIS空间数据中，点、线和面目标是它的基本要素。
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