This paper implements spatial data index and search of GIS, which can ensure the quickness and exactness of the query and search results.
可实现GIS中空间数据索引、检索功能，保证了空间数据查询的快速性和准确性。
Locally linear embedding (LLE) is a widely-used manifold learning algorithm, in this paper we improve on the algorithm and put it to use in spatial data index.
局部线性嵌入方法是一种应用广泛的流形学习方法，本文提出算法的一种改进，并将其应用于空间数据索引。
Nowadays the applications of spatial data similarity search are widely needed, and high dimensional spatial data index becomes a key technology of similarity search.
目前空间数据相似性查询有着广泛的应用需求，解决相似性查询问题的一项关键技术就是高维空间数据索引。
If you are familiar with spatial data and the grid index, the results are pretty much self-explanatory.
如果您熟悉空间数据和网格索引，那么结果就无需解释了。
Since the data is spatial, you need to specify the R-Tree access method for this index.
由于涉及到空间数据，您需要为这个索引指定r - Tree访问方法。
The DB2 spatial Extender comes with an index Advisor that you can use to optimize indexes defined on columns that contain spatial data.
DB 2Spatial Extender附带了一个IndexAdvisor，可以用它来优化包含空间数据的列上定义的索引。
Using the climatic data recorded by the 90 weather stations in Guangxi in 30 years and geographic information of the stations, spatial analyzing models of division index are built.
利用广西90个气象台站30年的气候资料和台站地理信息，建立了区划指标的空间分析模型。
Then, owing to the study to traditional spatial index, a new method: spatial data extension index is raised.
通过对传统的空间检索方法研究，提出了“基于空间数据扩展属性的检索”这一方法。
Therefore, the efficient index technology should be used to raise the efficiency of spatial data processing.
因此必须借助高效的索引技术来提高空间数据的处理效率。
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。
However, traditional index methods are not well suited to access spatial data objects because of the special properties of spatial data.
然而，由于空间数据的特殊性使得传统索引方法不能很好地适应空间数据的存取。
Geography information system is a computer system for the collection, storage, management, processing, index, analysis and representation of geography spatial data.
地理信息系统是用于采集、存储、管理、处理、检索、分析和表达地理空间数据的计算机系统。
Optimize the spatial database by improving space data index performance based on SDE.
引入SDE空间数据索引技术，通过改善空间索引的性能来优化空间数据库。
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。
While defining the spatial auto-relation index and an algorithm for spatial autocorrelation measurement is propsed, and the fair results are obtained in the experiment with the land use data.
本文以名义尺度下的栅格数据作为研究对象，通过定义空间自邻接指数提出一种空间自相关测度算法，并将其应用到土地利用数据分析中得到了较好的试验结果。
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。
Because I use spatial information, I would like to try some index structures which are more suitable for spatial data.
因为我使用空间信息，我想尝试一些更适合空间数据索引结构。
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。
The experiment shows that these two index methods greatly improve the efficiency of spatial data quality detecting.
实验表明，空间索引的引入，大大提高了数据质量检查效率。
Spatial index is a key issue in massive spatial data processing.
海量空间数据的处理需要通过空间索引来提高效率。
Aim at the characters of spatial data access control, the concept of spatial region access control based on spatial index was proposed.
针对空间数据的访问控制的特点，提出了基于空间索引的区域访问控制概念。
F test; t test)and estimation error of the model. Evaluating index for spatialised data products includes mean value, maximum value, value distribution range and spatial distribution of errors.
完整的属性数据空间化误差的评价指标包括数据源、空间化模型和数据产品等三个方面。
Then the method of data check and evaluating each spatial data quality index was described. The research content and method had succeeded in applying to Guangzhou data check system.
此研究内容与方法在广州空间数据检查系统中成功实现、应用，软件实际应用结果表明，论述方法正确，检验结果可靠。
Then the method of data check and evaluating each spatial data quality index was described. The research content and method had succeeded in applying to Guangzhou data check system.
此研究内容与方法在广州空间数据检查系统中成功实现、应用，软件实际应用结果表明，论述方法正确，检验结果可靠。
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