Secondly , the representation methods for spatial topological relations and spatial topological relation reasoning are researched 其次,本文具体介绍了空间对象的拓扑关系表示方法以及空间拓扑关系推理。
When the map is rendered , this spatial data is used to project the locations of the objects on a two - dimensional piece of paper 在生成可视化道路图时，需要利用空间数据将空间对象的位置投影到二维的平面上。
This thesis is intended for the introduction to the qualitative spatial analysis of spatial object in two - dimensional space by using character 本文主要介绍了利用字符对二维空间的空间对象进行定性空间分析。
In order to perfect performance efficiency , the mbr of spatial object is ordered by the hilbert ordering code of the center of spatial object ' s mbr 为改善生成效率，对空间对象的mbr按矩形中心点进行hilbert排列码排序。
To get started , the following java method returns a workplace web content management workspace object based on a user name and password 开始，下列java方法基于用户名和密码返回workplace web content management工作空间对象。
This thesis introduces a method of spatial data index based on character and its application to spatial relation analysis of spatial object 本文介绍了一种基于字符的空间对象索引方式及其在表达空间对象的空间关系分析上的应用。
Spatial object ' s minimum bounding rectangle approximately reflects the spatial characters of spatial objects , which speeds the search process 空间对象的外接矩形能够粗略反映出空间对象的空间特性，从而加速空间对象的定位过程。
Among these operations , the queries on the topological relationships between two moving objects are the most important , which we pay more effort to analyze 由于反映移动空间对象间拓扑关系的查询操作占据最重要地位，本文对时空拓扑谓词展开详细讨论。
In this paper , the objects that we research are spatial geometry in three - dimensional euclidean space . the definitions of spatial objects conform to opengis specification 本文的研究以三维空间几何体为研究对象，空间对象的定义符合opengis规范的要求。
Spatial index utilizes some kind of spatial relationship to organize data entries , with each key value seen as a point or region in a multi - dimensional space 空间索引由此应运而生，空间索引主要依靠空间对象之间的邻接性对数据进行组织，它的索引项通常是多维空间下的点或区域。
