The basic principles of the faced method, the common geometric module and RCS optimization are described. The related contourdrawing and display program are introduced.
In this paper, the methods of drawingcontour 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。
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In this paper, a drawing algorithm of contour lines with inner boundary constraints is obtained by the inner boundary curves of contour lines generated by using four-point method.