面向“数字城市”多源数据的空间数据立方体空间度量研究  

The Aggregation of Spatial Measure in Spatial Data Cube on Multi-Source Data for"Digital City"

作　　者：邹逸江[1] 

机构地区：[1]宁波大学建筑工程与环境学院,浙江宁波315211

出　　处：《地理与地理信息科学》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)

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＂.

关 键 词：GIS 空间数据立方体 空间度量 多源数据 

分 类 号：P208[天文地球—地图制图学与地理信息工程]