摘要
定义空间数据立方体地理空间维、专题维和时间维分别包含的数据种类和内容;设计它们的维和维层次数据结构;表述地理空间维、专题维和时间维在概念层次和物理层次上构成空间数据立方体的方法;确定地理空间维、专题维和时间维数据的多维数组组织方法,以及多维数据的数据文件和虚拟内存存储策略;表达多维数组中记录间的关联运算和多维数组的压缩方法。
Data classification and data content, respectively contained by geospatial dimension, thematic dimension and time dimension of spatial data cube, are defined in this paper. The geospatial dimension, thematic dimension, time dimension structure and their dimension hiberarchy structure are described. The method that geospatial dimension, thematic dimension, time dimension together make up spatial data cube is expressed by conceptual and physical mode. Also,the data organization based on multi- dimension array and data storage based on data file and virtual memory on geospatial dimension data, thematic dimension data and time dimension data are explained. The associational operation between records in multi - dimension array and compressing method of multi - dimension army are stated.
出处
《地理与地理信息科学》
CSCD
北大核心
2006年第5期26-30,共5页
Geography and Geo-Information Science
基金
国家自然科学基金资助项目(40273042)
宁波市科技局资助项目(2005A310004
2006A610092)
