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在传统缓冲区分析基本思想的基础上,提出基于空间对象缓冲区分析定义,区别在于邻域半径:前者为常量,后者为变量。设计实现基于空间对象缓冲区分析算法,该算法以空间对象为计算粒度,分为计算缓冲区边界点、生成缓冲区多边形、筛选缓冲区多边形内空间对象3个步骤,并从算法执行机理的角度对其做定性与定量评估。结果表明,该算法解决了传统缓冲区分析难以处理图层内以空间实体为分析粒度的问题,时间和空间复杂度亦优于传统缓冲区分析算法。 更多还原

【Abstract】 On the basis of the theory of traditional buffer analysis,a novel buffer analysis which is based on spatial object is proposed.The difference between them lies on neighborhood radius which is a variable in the new concept while it is a constant in the traditional theory.In this paper,a buffer analysis algorithm based on spatial object is designed and implemented which adopts spatial object as the granularity of computing.The algorithm can be divided into three phases:firstly,calculating boundary...