spatial indexing造句
例句與造句
- An improved method of building up grid spatial index construction
一種改進(jìn)的網(wǎng)格索引生成方法 - Access control model of 2 - d spatial region based on spatial index
基于空間索引的二維空間區(qū)域訪(fǎng)問(wèn)控制模型 - Spatial index is a indispensable part of spatial database , and can dramatically improve efficiency when doing a spatial query
空間索引作為空間數(shù)據(jù)庫(kù)中的重要組成部分，可以加快對(duì)空間對(duì)象的檢索。 - Aim at the characters of spatial data access control , the concept of spatial region access control based on spatial index was proposed
摘要針對(duì)空間數(shù)據(jù)的訪(fǎng)問(wèn)控制的特點(diǎn)，提出了基于空間索引的區(qū)域訪(fǎng)問(wèn)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
創(chuàng)造性地提出了基于粗分格網(wǎng)的對(duì)象范圍索引方法，并論證了該方法在建立空間索引方面的有效性和實(shí)用性。 - It's difficult to find spatial indexing in a sentence. 用spatial indexing造句挺難的
- We summarize that spatial index system should provides three kinds of spatial query , they are , spatial range query , nearest neighbor query , spatial join query
本文總結(jié)出空間索引系統(tǒng)應(yīng)提供的三類(lèi)空間查詢(xún)：空間范圍查詢(xún)、最近鄰居查詢(xún)、空間連接查詢(xún)。 - 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
空間數(shù)據(jù)的多維特性在任何方向上并不存在優(yōu)先級(jí)問(wèn)題，因此需要研究特殊的另類(lèi)“索引”以適應(yīng)多維特性的空間數(shù)據(jù)。 - 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
空間索引由此應(yīng)運(yùn)而生，空間索引主要依靠空間對(duì)象之間的鄰接性對(duì)數(shù)據(jù)進(jìn)行組織，它的索引項(xiàng)通常是多維空間下的點(diǎn)或區(qū)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
在數(shù)據(jù)索引方面，提出了基于數(shù)據(jù)庫(kù)的空間索引的實(shí)質(zhì)，對(duì)基于數(shù)據(jù)庫(kù)的空間索引作了一定的研究，提出了基于數(shù)據(jù)庫(kù)的sql兩階段查詢(xún)的空間網(wǎng)格索引機(jī)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
多媒體電子兵要地志以多幅地圖為顯示平臺(tái)，海量數(shù)據(jù)電子地圖的快速顯示是面臨的首要問(wèn)題，作者在文中詳細(xì)介紹了空間索引技術(shù)。 - 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
本論文首先對(duì)空間數(shù)據(jù)庫(kù)的索引進(jìn)行探討，并給出了空間索引結(jié)構(gòu)的發(fā)展演化圖，然后介紹了目前國(guó)內(nèi)外gis的空間連接過(guò)程中的主流索引結(jié)構(gòu)，最后引入了字符來(lái)表達(dá)空間對(duì)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，遵照當(dāng)今gis技術(shù)和計(jì)算機(jī)軟件技術(shù)的最新發(fā)展趨勢(shì)，提出了一種利用面向?qū)ο蠹夹g(shù)，從底層開(kāi)發(fā)符合特定應(yīng)用的組件式gis控件的思想，并給出了在這種思想下，組織、存放空間數(shù)據(jù)和屬性數(shù)據(jù)以及建空間索引的方法。 - 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
空間索引的直接需求來(lái)自于大量空間對(duì)象上的空間運(yùn)算，本文認(rèn)為在空間數(shù)據(jù)庫(kù)中空間運(yùn)算應(yīng)該分兩步進(jìn)行：第一步是篩選步驟，通過(guò)空間索引縮小進(jìn)行比較的空間對(duì)象的個(gè)數(shù)；第二步為細(xì)化步驟，對(duì)從第一步中篩選出的空間對(duì)象進(jìn)行精確的空間運(yùn)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
文中對(duì)該模型的基本設(shè)計(jì)思想、空間數(shù)據(jù)的存儲(chǔ)結(jié)構(gòu)、空間數(shù)據(jù)的組織、空間索引的建立等都作了詳細(xì)的論述，構(gòu)建了基于該模型的空間數(shù)據(jù)訪(fǎng)問(wèn)控件，并對(duì)該模型在專(zhuān)用領(lǐng)域(宗地檔案管理)內(nèi)的應(yīng)用作了相應(yīng)的時(shí)態(tài)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
本論文采用面向?qū)ο蠓椒?，?duì)gis中空間對(duì)象的數(shù)據(jù)模型、語(yǔ)義定義和表示、對(duì)象間的基本語(yǔ)義關(guān)系、對(duì)象的基本空間操作及拓?fù)浣Y(jié)構(gòu)、地理數(shù)據(jù)的組織、數(shù)據(jù)的存儲(chǔ)和空間索引等方面進(jìn)行了較全面的探索和研究，并在此基礎(chǔ)上，提出了面向?qū)ο骻is的整體概略框架。
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