基于3维地形图的空间分析算法

A Spatial Analysis Algorithm Based on 3D Topographic Map

讨论了基于 3维地形图的空间分析算法。利用正解与反解两种方法 ,建立 2维图形目标点与 3维DEM网格点之间的投影变换关系 ,从而获取 3维地形图上目标点的 3维坐标 。

In this paper,Spatial analysis algorithm is discussed based on three dimension topographic map.using positive dispel and counter dispel means, we establish projection transformation connection between the two dimension graphics target dot and the three dimension DEM grid dot. So we can obtain target dot's space coordinate in three dimension relief map and achieve several basic interspace analyzing arithmetic.