根据控制点和道路中心线的坐标值，利用距离加权平均法内插每个点的高程值，最终生成有Z值的道路边线。-According to the coordinates of control points and road centerlines, using the interpolated elevation value of each point from the weighted average method, the resulting Z value of the road edge.

读取离散点坐标高程数据.dat文件，生成格网DEM，采用逐点内插法中的加权平均法求格网点高程(Read the discrete coordinates of elevation data.Dat file, generate DEM grid point by point interpolation method, the weighted average Faqiuge dot height)