Dynamic segmentation is a new technique in the analysis , displaying and mapping of lines in gis 摘要動態(tài)分段是一種新的線性特征的動態(tài)分析、顯示和繪圖技術(shù)。
This paper discusses the expression of dynamic segmentation and the characteristics of its data construction 本文論述了動態(tài)分段技術(shù)產(chǎn)生的根源,動態(tài)分段數(shù)據(jù)結(jié)構(gòu)的特點。
This paper also introduces the application of dynamic segmentation technique on geographic information system for transportation , river water quality dispersion model , dem development and some other aspects 介紹了動態(tài)分段技術(shù)在交通地理信息系統(tǒng)、河流水質(zhì)擴散模型、 dem生成及其它方面的應用。
Dynamic segmentation technology is used to resolve the mutual operation problem between fixed spatial element and abundant attribute data , thus favorable foundation is formed to develop hngis with full functions . ( 2 ) this paper systematically analyzes the characteristics of traffic transit in highway network , explains the relative problems about inquire for the optimal route in highway network . it analyzes the factors affecting users making choice , determines the choice object of transit route : integrated evaluation system of link impedance is formed 系統(tǒng)分析了公路網(wǎng)空間實體集以及它們之間的關系,提出了公路網(wǎng)gis數(shù)據(jù)的具體組織方法,其中涉及到信息圖層空間劃分、公路網(wǎng)gis數(shù)據(jù)編碼、數(shù)據(jù)庫的設計等內(nèi)容:提出采用動態(tài)分段( dynamicsegmentation )技術(shù)來解決固定空間要素與海量屬性數(shù)據(jù)的關聯(lián)和互操作問題,為研究開發(fā)完全功能的公路網(wǎng)gis打下了良好的基礎。
Whereafter , based on the analysis on the flood influence for traffic lines , the research is centered on the following parts : firstly , the destroying modes , reasons and mechanism of flooded lines are discussed , and the frameworks and countermeasures of preventing and controlling hazards system are put forward ; secondly , the ways of region forecasting for the landslide are analyzed and the automation of landslide forecast for certain site through visual programming is realized . furthermore , the function of dynamic segmentation in arc view is made use of to realize the forecast result ' s visualization ; thirdly , the reasons and patterns of roadbed subsidence are discussed and the methods of forecasting subsidence based on the gm ( 1 , 1 ) model are put forward . then the applications of the arcview software and its extended module on the study of roadbed subsidence are debates upon ; fourthly , an analysis on the sources of flood for traffic lines , which situate in the reservoir coverage area , is given 接著,論文探討了山區(qū)交通線路災害的特點、分類、時間和空間分布規(guī)律以及災害的防治原則和對策等;然后,以洪水災害對交通線路的毀壞為主線,重點研究和分析了以下幾個問題:第一,探討了洪水對交通線路的破壞方式,水毀原因以及水毀機理,并提出了交通線路水毀防御系統(tǒng)框架和對策;第二,分析了雨季邊坡塌方災害的區(qū)段預測方法;通過可視化編程,編制了雨季邊坡塌方災害的工點預報程序,并結(jié)合arcview實現(xiàn)了預測結(jié)果的可視化;第三,對路基沉陷原因和模式進行了分析,并提出利用gm ( 1 , 1 )模型對路基沉陷區(qū)進行分析和預測,最后論述了arcview軟件及其擴展模塊在沉陷區(qū)研究分析中的應用;第四,對汛期庫區(qū)線路災害的原因進行了分析,并探討了利用數(shù)量化理論對路基防護工程抗洪能力進行預測的意義;第五,提出從風險的角度對交通線路的防災減災進行管理,對風險估計的相關問題進行了論述,并探討了交通線路水害危險區(qū)段的劃分問題。