矢量數據 的英文怎麼說
中文拼音 [shǐliángshǔjù]
矢量數據
英文
vector data-
Organizing ofvector data in 3d geographic information systems
三維地理信息系統矢量數據組織In short, vector data take the simplest topological entities - points, lines, and polygons - and anchor them within a 2 - d cartesian coordinate system to describe geographical features
簡言之,矢量數據利用最簡單的拓撲實體點、線和多邊形,並在二維笛卡爾坐標系統中固定它們來描述地理特徵。The paper is mainly based on geography, ecology, sight ecology, region location theory and system theory. by interpreting the mss remote sensing image of 1970s and the tm remote sensing image of 1980s and the end of 1990s in keerqin sandlot based on background database and expert information, we have achieved the three periods vector data of land desertification of the research area, then we have disposed the data property by using the powerful spatial analysis function of arc / info and achieved the information extraction and analysis supported by arcview and erdas imagine. thus the rule of temporal and spatial variation of land desertification in keerqin sandlot is researched and the blueprint and countermeasures of the prevention and treatment of land desertification in keerqin sandlot are put forward
本研究主要以地理學、生態學、景觀生態學、區位論和系統論為主要理論支持,通過對科爾沁地區20世紀70年代的mss遙感影像、 20世紀80年代和90年代末tm遙感影像進行基於背景數據庫和專家知識的解譯,獲得科爾沁研究區土地沙漠化的三期矢量數據,利用arc / info軟體強大的空間分析功能對屬性進行處理,並在arcview 、 erdasimagine軟體的支持下進行信息提取與分析,研究了科爾沁沙地土地沙漠化時空變化的規律,提出了科爾沁沙地土地沙漠化防治的構想與對策。Qgis handles all three - raster, vector, and database - a state of affairs that took considerable effort for programmers writing gis data programming libraries
Qgis處理所有三種數據柵格數據、矢量數據和數據庫,這也是編寫gis數據編程庫的程序員的重要努力方向。In this paper, based on understanding and mastering image processing, we input the drawing into the computer by the image conversion, then automatically get and recognize the element by the method of the image processing and pattern recognition. at last, on the base of the understanding of the whole drawing, we will transform the information of the picture and the character to the vector format, on which we can make the vivid courseware
本文在理解和掌握圖像處理主要技術基礎之上,主要討論通過圖像轉換裝置將圖紙輸入到計算機,運用圖像處理、模式識別等理論和方法進行圖像中各種要素的自動提取識別,在實現對整幅圖紙理解的基礎上,自動將圖紙和符號信息轉換為矢量數據格式。Vector data information for c programmers can be hard to come by. the terse but thorough
面向c + +編程人員的矢量數據信息很難獲得,簡潔而詳實的On the aspect of data model, based on improving and extending the gdf data model, the data model of sde was put forwad. the data model can express multi - section data and semantic relations between different feature layers. it support segment attributions, so can express a segmental attribution of a line feature
在數據模型方面,在gdf數據模型的基礎上進行了改進和擴充,提出了sde的數據模型,該模型具有多圖幅數據連續性表達、能表達不同層要素之間語義關系、支持段屬性,能夠表達線要素屬性上某一段屬性、支持多媒體數據類型等優點,並對數據庫中矢量數據的存放方式作了比較實驗。It realized the spatial interpolation software grounded on geostatistics seamlesslly integrated with the system using the way of oop and the technology of ole / activex based on com. using vector - grid spatial - overlap analysis to solve the limitation of the grid and general vector data structure in the course of creating prescription, it made fertilizer prescription founded on the main factor of soil nutrient and yield - target. also it effectively integrated comgis with exper t system using the technique of loose coupling
以面向對象的設計方法為基礎,利用「組件對象模型」基礎上ole / activex技術實現基於地統計學的空間插值軟體實現及與施肥處方系統的無縫集成;應用基於矢量網格的空間疊加分析方法解決柵格和常規矢量數據結構在處方生成中的局限,生成了基於土壤養分和目標產量為主要因素的施肥處方;利用鬆散耦合技術將comgis與施肥專家系統進行有效集成;充分考慮施肥機對施肥處方數據結構要求,在wgs - 84坐標系下採用具有柵格單元的矢量施肥處方。The main technical module of processing gis spatial information of land desertification is designed, which can carry out the spatial overlay of vector data in three periods, extract as well as process attributative information and transform the spatial vector data into visualizing data. the gis database of land desertification is established
本研究設計了土地沙漠化gis空間信息處理的主要技術模塊,即三期矢量數據的空間疊加、屬性的信息提取與處理、空間矢量數據向可視化數據庫的轉化,建立了土地沙漠化gis數據庫。These data consist of scalar data ( temperature, pressure, etc ) and vector data ( velocity, etc ), which are commonly defined on unstructured grids with complex topology
這些數據類型比較復雜,既有溫度、壓力等標量數據,又有速度等矢量數據,而且它們通常定義在非規則網格上的拓撲關系也很復雜。The paper has made detailed observation by the existing apparatus and the field observation stations. based on the image and the vector database of the yutian oasis, the study has obtained the precise coordinates of investigation points by gps technique, and overlapped them with the images. after classifying the images with the maximum likelihood supervised classification method, we import the result into cis software, and analyze the yutian oasis changes about land cover " s quantity, quality and spatial position from 1976 to 2001
本文利用現有儀器設備和野外觀測網站進行詳細觀測,在建立於田綠洲圖像庫和矢量數據庫的基礎上,運用gps技術取得野外考察樣點的精確坐標並與研究區各時期影像疊加,對影像進行了最大似然法監督分類,並將分類結果轉入gis軟體處理,全面分析了1976年至2001年該綠洲的土地覆蓋類型數量、質量與空間上的變化。Thirdly, it utilizes line tracking and douglas - peucker line - simplification algorithm to realize the raster - to - vector conversion. a triangulated irregular network ( tin ) is constructed based on vector data, and dem point - array data is computed by interpolating grid on tin
第三,使用輪廓線跟蹤演算法和dpl多邊形近似方法實現等高線數據的矢量轉換;並基於等高線矢量數據建立不規則三角網,再內插格網生成dem點陣數據。And its spatial analytic functions such as overlay analysis and buffer analysis that can be used to extract multiple variables and information from geologic bodies organized in map layers in point, line or polygon shape are in favor of discovering ore - forming factors, summarizing regional metallogenic regularities and constructing geologic metallogenic models
以矢量數據結構為主,實現了對點、線、面地質體的gis空間分析功能,以便對多元矢量數據信息進行疊加分析和相關分析,發現和歸納研究區域的成礦規律,建立成礦地質模型。Fuzzy geographical object modeling based on vector data model
基於矢量數據模型的模糊地理對象建模Key algorithm for creating topology relation of three dimension vector data model
建立三維矢量數據模型拓撲關系的關鍵演算法The system adopts spatial data model based on the vector data model ; topology relation model uses spatial data model combined with spatial data index ; and makes use of relation database to save spatial entity data
本系統採用基於矢量數據模型的空間數據模型;拓撲關系模型採用空間數據模型與空間數據索引結合;採用關系數據庫存儲空間對象數據。This paper supplies systematic research on data organization method which is suitable for hngis, at the same time studies deeply on the optimization of transit route with many goals in highway network. ( 1 ) based on the systematic analysis on the spatial data model and the spatial data structure, through study on two kinds of commonly used gis data models : raster data model, vector data model and the characteristics of highway network, the paper plans the logistic data model of hngis, and proposed the spatial data storing structure based on vector method
本文系統的研究了適合於公路網gis的數據組織方法,同時,對公路網多目標最優出行路徑問題也給予了深入的研究: ( 1 )通過對兩種常用的gis數據模型(矢量數據模型、柵格數據模型)及對公路網路特徵的分析,設計了公路網gis的邏輯數據模型,給出了基於矢量方法的空間數據存儲結構。Firstly this paper ananlyzed the way and problem of digital city in 3d visualization. then generalizing the development in 3d cis. especially in 3d spatial data model. based on the existing 3d data model, digital city is composed of piont, wire, surface > soild, we can use 3d vector data model in building 3d city model. on the other hand the paper emphasizes 3d reconstruction and 3d interactive of city building model
本文首先分析了數字城市三維可視化所面臨的問題和發展現狀,總結了當前3dgis ,特別是3d空間數據模型的特點和功能,在此基礎上,把數字城市中幾何目標分類為:點、線、面、體四種類別,採用了三維矢量數據模型建立三維城市模型,而且本文著重探討了城市建築物的三維重建以及三維交互。Spatial data is the key of gis functionality and data ' s collection, integration, analysis and representation of gis open the full process of spatial data. it compares some kinds of spatial data model of gis and points that more gis adopt vector data model as the main data model with people ' s improving requests to contents that data represent. multi - source spatial data enrich the representing ability of gis, the modules of multi - source data integration are analyzed and data integrati on in oil and gal field is studied
空間數據是gis功能的核心, gis的數據採集、集成、分析和表現展現了gis數據使用的全過程,比較gis的幾種空間數據模型,指出人們對數據所能表達的內容的要求增高,更多的地理信息系統採用矢量數據模型作為其主要數據模型;多源數據豐富了gis的表現能力,分析多源空間數據集成的模式,研究油氣田中的數據集成。Under the premise of ensuring its accuracy of point positions, not only is vector data obtained but its compressing is also realized with a quicker speed, more accuracy and smaller storage device
該方法在確保點位精度前提下,可獲得以弧段為單位的矢量數據,同時依據線狀要素的形態取樣,從而達到壓縮數據目的,此演算法處理速度快,精度高、存儲量小。分享友人