在地理信息系统概率中，知道一个数据表，用编程的方法求它们的MORDAN码值-Geographic Information System in the probability of that a data table, using the method of programming for the value of their code MORDAN

地理信息系统 栅格数据四叉树编码（四进制morton码）-Geographic information system raster data quadtree coding (quaternary the morton yards)