给出了空间数据结构的一个综述。
建立了合适的空间数据结构。
栅格结构是最简单最直观的空间数据结构。
Raster is one of the most intuitionistic and simplest spacial 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。
Its efficiency is directly decided by the main operation and spatial data structure.
自从对空间数据库进行研究以来，已经出现了许多支持这些操作的空间数据结构。
There have been a great variety of spatial data structures to support such operations since researching spatial database.
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。
Objective To describe a spatial data structure called sorted volumetric data structure which speeds up the volume rendering and will not affect image quality.
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。
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.
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。
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.
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。
This paper describes the access control method for the specific relational-object data structure on the base of the self-developed spatial database, VISTA.
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。
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.
空间数据库的建立经历了概念设计、逻辑设计、物理设计过程，主要突出了道路、事故信息的数据结构设计。
The design of space-database went through concept design, logical design and physical design. This process gave prominence to designing the road and data structure of accidents information.
空间数据处理内容广泛，本文选择空间数据处理领域的矢量数据结构与栅格数据结构之间的相互转换、不同空间数据格式的数据转换方法等几个方面作为研究的内容。
Some parts have been researched which are approach for mutual transferring between vector structure and raster structure, the switchover of different data format. This thesis has three parts.
空间数据库的建立经历了概念设计、逻辑设计、物理设计过程，主要突出了道路、事故信息的数据结构设计。
The design of space-database went through concept design, logical design and physical design. This process gave prominence to designing the road and data structure of accidents...
空间数据库的建立经历了概念设计、逻辑设计、物理设计过程，主要突出了道路、事故信息的数据结构设计。
The design of space-database went through concept design, logical design and physical design. This process gave prominence to designing the road and data structure of accidents...
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