spatial indexing造句
例句与造句
- An improved method of building up grid spatial index construction
一种改进的网格索引生成方法 - Access control model of 2 - d spatial region based on spatial index
基于空间索引的二维空间区域访问控制模型 - Spatial index is a indispensable part of spatial database , and can dramatically improve efficiency when doing a spatial query
空间索引作为空间数据库中的重要组成部分，可以加快对空间对象的检索。 - Aim at the characters of spatial data access control , the concept of spatial region access control based on spatial index was proposed
摘要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。 - Presents a spatial index method based on rude grid and object bound and proves its validity and practicability on constructing spatial index . 3
创造性地提出了基于粗分格网的对象范围索引方法，并论证了该方法在建立空间索引方面的有效性和实用性。 - It's difficult to find spatial indexing in a sentence. 用spatial indexing造句挺难的
- We summarize that spatial index system should provides three kinds of spatial query , they are , spatial range query , nearest neighbor query , spatial join query
本文总结出空间索引系统应提供的三类空间查询：空间范围查询、最近邻居查询、空间连接查询。 - Each dimention of spatial data is not in precedence to other , so special index is needed to support spatial data , which leads to the introduction of spatial index
空间数据的多维特性在任何方向上并不存在优先级问题，因此需要研究特殊的另类“索引”以适应多维特性的空间数据。 - 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。 - On the aspect of data index , the essential of spatial index was advanced based on database , and a spatial index method called the spatial grid index method was put forward based on two phases database query
在数据索引方面，提出了基于数据库的空间索引的实质，对基于数据库的空间索引作了一定的研究，提出了基于数据库的sql两阶段查询的空间网格索引机制。 - As the display of electronic multi - media military geographic documentations is based on multiple topographic maps , increasing the display of electronic maps with macro vector data is the chief problem to solve . the paper introduces the spatial index technique at detail for it
多媒体电子兵要地志以多幅地图为显示平台，海量数据电子地图的快速显示是面临的首要问题，作者在文中详细介绍了空间索引技术。 - This thesis discusses spatial data index first , shows the history of spatial index structure , introduces the current domestic and foreign main index structure in gis ' s spatial joining , and then makes use of character to express spatial object
本论文首先对空间数据库的索引进行探讨，并给出了空间索引结构的发展演化图，然后介绍了目前国内外gis的空间连接过程中的主流索引结构，最后引入了字符来表达空间对象。 - Then according to the current technology of gis and the latest development trend of the computer software technology , it proposed a primitive components gis spatial data organization model making use of the object - oriented technology . it also brings forward a method of how to take advantage of the object - oriented idea to store the spatial data and the property data consistently into the relational database and set up a spatial index
然后，遵照当今gis技术和计算机软件技术的最新发展趋势，提出了一种利用面向对象技术，从底层开发符合特定应用的组件式gis控件的思想，并给出了在这种思想下，组织、存放空间数据和属性数据以及建空间索引的方法。 - Demands for spatial index directly come from spatial methods . in spatial database , spatial methods are implemented in two steps : first is filter step , in which spatial object ' s number is reduced through spatial index . second is refinement step , in which spatial objects resulted from filter step are subjected to exacted computation
空间索引的直接需求来自于大量空间对象上的空间运算，本文认为在空间数据库中空间运算应该分两步进行：第一步是筛选步骤，通过空间索引缩小进行比较的空间对象的个数；第二步为细化步骤，对从第一步中筛选出的空间对象进行精确的空间运算操作。 - In this paper , the basic idea , storage structure of spatial data , spatial data organization and spatial index construction about the presented model are discussed in detail . moreover , a spatial data access component based on the model is developed and a specialized spatial - temporal data model developed from the model is presented to satisfy the demand of property parcel management
文中对该模型的基本设计思想、空间数据的存储结构、空间数据的组织、空间索引的建立等都作了详细的论述，构建了基于该模型的空间数据访问控件，并对该模型在专用领域(宗地档案管理)内的应用作了相应的时态拓展。 - In the thesis , by the object - oriented method , we study and explore deeply the data model of spatial object , the definition and expretion of semantics , the basic relaionship among objects , the basic spatial operation and topology structure , the orgazization of geographic data , the storage of data and the spatial index
本论文采用面向对象方法，对gis中空间对象的数据模型、语义定义和表示、对象间的基本语义关系、对象的基本空间操作及拓扑结构、地理数据的组织、数据的存储和空间索引等方面进行了较全面的探索和研究，并在此基础上，提出了面向对象gis的整体概略框架。
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