Buliding a fitted spatial data structure.
建立了合适的空间数据结构。
Its efficiency is directly decided by the main operation and spatial data structure.
空间分析的效率由空间数据结构和主要空间操作所决定。
Objective To describe a spatial data structure called sorted volumetric data structure which speeds up the volume rendering and will not affect image quality.
本文提出一种称为有序体数据的空间数据结构，它可以有效地加速体绘制而对图像质量没有影响。
Based on the classification of the primary modeling objects in the city scene, we separately rebuild the model of the terrain and objects according to the 3d spatial data structure.
在对城市景观主要建模对象进行分类的基础上，建立了三维空间数据结构，实现了地形和地物模型三维重建的系列算法。
Data structure for computational physical implementation used for fuzzy query according to spatial relations is given.
给出了用于按照空间关系进行模糊查询的计算机物理实现的数据结构。
The simple data structure of vector model is introduced using the ORACLE SPATIAL as an example.
在该部分，以ORACLESPATIAL为例，讨论了矢量数据模型的简单数据结构；
With the vector data structure created, we study a lot of spatial analyze arithmetic, such as the shortest path arithmetic.
同时，根据所建立的矢量数据结构，我们研究了一些空间分析算法，如最短路径算法等。
The paper discusses several problems based upon SMDE, and do some research on data model spatial index structure, system designings and the process of exploiture.
论文将围绕专题军事地理数据库引擎的一些相关问题，对它的数据模型、空间索引结构、系统设计及开发过程进行研究。
Futhermore, this paper discussed designing of system structure, the processing of basic data, spatial analysis and geographic modeling.
重点对系统结构设计、基础数据处理、空间分析、地理建模等方面都做了详尽的讨论。
This paper describes the access control method for the specific relational-object data structure on the base of the self-developed spatial database, VISTA.
论文在自主开发的空间数据库VISTA的基础上针对特定的对象-关系型数据结构，提出了相应的访问控制方法。
Under the background of the rapid urbanization, an obvious limitation of "time lag" is used to analyze urban social spatial structure with the data of national census.
中国快速城市化背景下，利用中国人口普查数据进行城市社会空间结构分析具有明显的“时滞性”缺陷。
In this paper spatial data organization structure chart of seamless GIS is advanced, the point, line, area, complex feature, DTM data and attribute merge table of block are discussed in detail.
本文给出了无缝gis空间数据组织结构图，并详细列出了图块的点、线、面、复杂要素、DTM数据以及属性拼接表的数据结构。
Increasing requirements of spatial data result in the appearance of the spatial data basic structure, and make GIS standards increasingly important.
对空间数据不断增长的需求和关注导致空间数据基础结构的出现并使GIS标准日趋重要。
The R-tree is a commonly used index structure of spatial data.
树是常用的空间数据索引结构。
R-tree is a dynamic index tree of space search. Its structure use multi-dimensional region to express spatial data object. R-tree is a valid way to visit rectangle.
树是空间搜索的动态索引树，它的结构是利用多个维中的区间来表示空间数据对象，它是矩形访问的一种有效方法。
Power GIS needs to deal with a variety of spatial data effectively, so it requires a high-performance spatial index structure.
电力GIS系统需要对各种空间数据进行有效处理，这就要求有一个高性能的空间索引结构。
It is essential to the spatial raster data structure of GIS; in fact, all spatial analysis about raster data is based on the digital topology.
数字拓扑主要研究栅格空间中离散几何对象的拓扑性质，这些性质在GIS空间分析和栅格数据处理中非常重要。
This paper describes the model structure, model content and related applications of several commonly used GIS spatial data model of the current society.
本文主要介绍了当前社会中常用的几种GIS空间数据模型的模型结构、模型内容以及相关应用等。
QR-tree, a spatial index structure based on R-tree and a kind of space partition method using Quad-tree, is proposed. Its data structure and algorithms are also stated.
提出了一种基于R-树与“四叉树”空间层次划分的空间索引结构QR-树，给出了其数据结构和算法描述。
Geographical information systems development and optimize the structure of spatial data closely, raster and vector data efficient conversion of data between the GIS is one of the key technologies.
地理信息系统开发和优化的空间数据结构紧密，光栅和矢量数据之间的地理信息系统数据的有效转换的关键技术之一。
This paper shows the design of spatial-temporal data structure, the analysis of methods of history information backward recovering, and some example of important programming.
给出了时空数据模型的设计、历史沿革追溯与时间断面复原算法的分析，以及算法实现中的关键部分。
This paper proposes a new concept which is called virtual map on the basis of structure analysis and organization of spatial data.
本文在分析现有空间数据的组织、管理方法的基础上提出虚拟图幅的概念，并详细介绍了基于此对空间数据的组织方法。
In order to research the spatial distribution law of the regional industrial structure, the self organization maps method is used to cluster and analyze the regional data in China 2003.
为了研究地区产业结构的空间分布规律，采用自组织映射的聚类方法，对2003年中国省级地区的产业结构进行了聚类分析。
It has several subgroups which including Biological Collections Data, Economic Botany, Geography, Structure of Descriptive Data, TDWG Process and Spatial Data Standards.
下设生物学收藏物、经济植物学、地理学、数据描述结构、加工和空间数据标准等几个附属工作组。
It has several subgroups which including Biological Collections Data, Economic Botany, Geography, Structure of Descriptive Data, TDWG Process and Spatial Data Standards.
下设生物学收藏物、经济植物学、地理学、数据描述结构、加工和空间数据标准等几个附属工作组。
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