摘要
叙述了面向“数字城市”多源数据的空间数据立方体空间度量的基本定义;描述了空间度量的聚集概念,并结合具体的图例阐述了点状、线状、面状空间度量的聚集过程;解释了空间数据立方体维上钻、维下翻、维层次上钻、维层次下翻的空间度量聚集操作基本原理。
Spatial measure is an important concept in spatial data cube, it can meet demand of multi - source data and dynamic spatial analysis for ＂Digital City＂. This paper gives a definition of spatial measure on spatial data cube for multi - source data on ＂Digital City＂, and describes basic concept of aggregation on spatial measure, and explains aggregation process of point spatial measure, line spatial measure, area spatial measure by legend, and states basic aggregation principle of spatial measure, and expresses foundational analysis method of dimension roll - up, dimension drill - down, dimension hierarchy roll - up and dimension hierarchy drill - down for spatial measure in spatial data cube. So, it plays an important role for spatial measure to construct ＂Digital City＂.
出处
《地理与地理信息科学》
CSCD
北大核心
2007年第2期22-25,共4页
Geography and Geo-Information Science
基金
国家自然科学基金项目(40273042)
宁波市科技局资助项目(2005A310004
2006A610092)
