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。
2
Line location: according to the installation location, size and elevation in the drawing out of doors and Windows, doors and Windows on both sides of the doors and Windows to the edge line.
划线定位：根据设计图纸中门窗的安装位置、尺寸和标高，依据门窗中线向两边量出门窗边线。
3
This drawing shows what the front elevation of the house will look like when it is built.