摘要
为了设计GIS中动态空间关系与模糊空间关系的有效查询语言 ,需要顾及空间数据的动态性和不确定性 ,探讨其空间表达等问题 .建立了空间目标的解析表达模型 ,区分了“动态空间关系”和“不确定空间关系”两个概念 ,提出了描述两种空间关系的基本方法 ,并初步给出了识别动态空间关系和不确定性空间关系的途径 .
To design an effective query language for both dynamic spatial relationships and fuzzy spatial relationships in GIS, we have to study spatial representation of spatial data with considering of their dynamic and uncertain characters. This paper presents an analytical model of spatial objects, distinguishes and defines dynamic spatial relationship and uncertain spatial relationship. A new approach is proposed to describe the spatial relationship. On the basis of this, we build up a formal description for modeling those two spatial relationships respectively and give a mean of identifying them.
出处
《煤炭学报》
EI
CAS
CSCD
北大核心
2001年第4期374-379,共6页
Journal of China Coal Society
基金
国家自然科学基金项目 (4980 10 16)
