基于地图代数的点状实体空间作用域划分方法研究

Method for plotting the space function area of dot entity based on map algebra

提出基于地图代数的点状实体空间作用域划分法,该方法考虑了"点状实体对空间作用域单元的影响应该是沿着交通网络系统传播的"基本特征,通过测算点状实体作用强度指数值和交通网络流强度指数值,并将其看作"权"因子,进行障碍欧氏加权距离变化,以实现真正意义点状实体空间作用域划分.

This paper analyses the disadvantages of round method and Voronoi diagram in the delimitation of dot entity function area, and introduces the method based on map algebra. This method considers that the function of dot. to space function area is along traffic network system, which is the basic character. And it calculates the value of function indices and traffic network flux indices, which is used as weight to perform impediment Euclid weighted distance. This method improves the accuracy of delimitation in dot physical space function area.