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面向GIS的可自定成圖系統(tǒng)的研制

發(fā)布時(shí)間:2018-10-04 21:39
【摘要】:在測(cè)繪制圖領(lǐng)域,隨著數(shù)字化制圖軟件的出現(xiàn),地圖產(chǎn)品已經(jīng)完全可以在成圖軟件的輔助下進(jìn)行人機(jī)交互式的自動(dòng)化、半自動(dòng)化的生產(chǎn)。然而,隨著城市建設(shè)更快的發(fā)展,地理要素的變化也在加速,軟件中預(yù)設(shè)的繪圖要素?zé)o法完全滿足生產(chǎn)實(shí)際及項(xiàng)目方的需求;而且軟件所繪圖形需要經(jīng)過基于要素的轉(zhuǎn)換或轉(zhuǎn)換到SHP文件作為中間格式才能被ArcGIS所使用。因此有必要研制出一套既可以讓最終用戶自己定制繪圖要素又能使所繪圖形直接被ArcGIS所使用的成圖系統(tǒng)。本文使用C#語言及Visual Studio2015開發(fā)環(huán)境,在AutoCAD2015平臺(tái)下進(jìn)行二次開發(fā),以SQL Server2014作為后臺(tái)數(shù)據(jù)庫,并采用Entity Framework技術(shù)實(shí)現(xiàn)數(shù)據(jù)庫的數(shù)據(jù)訪問,研制出了一套面向GIS的可自定成圖系統(tǒng)。針對(duì)擴(kuò)展或修改系統(tǒng)所能繪制的要素對(duì)最終用戶素質(zhì)和技術(shù)水平要求較高而且嚴(yán)重影響繪圖效率的問題,本文把繪制要素所需的數(shù)據(jù)從繪圖程序中獨(dú)立出來,使數(shù)據(jù)具有高度的獨(dú)立性,繪圖程序具有高度的通用性;并采用數(shù)據(jù)庫組織和存儲(chǔ)數(shù)據(jù);同時(shí)提供能由最終用戶進(jìn)行創(chuàng)建、編輯、添加的可自定控制信息數(shù)據(jù)庫管理系統(tǒng),相比較通過客戶化定制或者二次開發(fā)的方法,本系統(tǒng)能讓最終用戶即使不修改系統(tǒng)的程序也能便捷地?cái)U(kuò)展系統(tǒng)所能繪制的要素,極大地提高了繪制不同測(cè)繪地理信息數(shù)字地圖的效率。對(duì)于系統(tǒng)提供的電子數(shù)據(jù)必須經(jīng)過數(shù)據(jù)轉(zhuǎn)換才能被ArcGIS所使用且轉(zhuǎn)化后存在屬性數(shù)據(jù)丟失的問題,本文采用ESRI公司的“CAD制圖規(guī)范”組織和存放要素類的定義信息和要素的屬性數(shù)據(jù)的方法,使系統(tǒng)所繪圖形無需經(jīng)過任何中間處理而能直接被ArcGIS所使用,該方法克服了過去由于數(shù)據(jù)轉(zhuǎn)換而造成信息丟失和效率低下的問題。最后本文分別以國家基本比例尺1:1000圖式和相應(yīng)數(shù)據(jù)字典、廣州市地下管線探測(cè)技術(shù)規(guī)程為準(zhǔn),建立存儲(chǔ)了1191個(gè)要素和591個(gè)要素的控制信息數(shù)據(jù)庫管理系統(tǒng);并以1:1000地形圖(共計(jì)2150個(gè)圖形要素)和1:500地下管線圖(共計(jì)2530個(gè)圖形要素)實(shí)測(cè)數(shù)據(jù)進(jìn)行數(shù)字成圖;接著使用ArcMap 10.2軟件直接使用本繪圖系統(tǒng)保存的上述地形圖和管線圖的DWG文件。系統(tǒng)經(jīng)測(cè)試表明,最終用戶可以添加、修改、刪除可自定控制信息數(shù)據(jù)庫中的所有要素類的控制信息,且系統(tǒng)所繪圖形能不經(jīng)過任何中間處理直接被ArcGIS所使用。與當(dāng)前主流的成圖系統(tǒng)相比,本系統(tǒng)的使用能夠使最終用戶快捷地制作出滿足生產(chǎn)實(shí)際及項(xiàng)目方需要的測(cè)繪地理信息數(shù)字地圖,并在一定程度上提高了空間數(shù)據(jù)庫的建設(shè)效率。
[Abstract]:In the field of mapping and mapping, with the emergence of digital cartography software, map products can be fully assisted by the mapping software for human-computer interaction automation, semi-automatic production. However, with the rapid development of urban construction, the change of geographical elements is also accelerating, and the default drawing elements in the software can not fully meet the needs of the actual production and project parties; Furthermore, the graphics drawn by the software need to be transformed or converted to SHP files as intermediate format to be used by ArcGIS. Therefore, it is necessary to develop a mapping system which can not only allow the end-user to customize the drawing elements but also enable the drawing to be used directly by ArcGIS. In this paper, using C # language and Visual Studio2015 development environment, the secondary development is carried out under the AutoCAD2015 platform, SQL Server2014 is used as the backstage database, and the data access of the database is realized by using Entity Framework technology, and a set of self-determining graphic system oriented to GIS is developed. In view of the problem that the factors that can be drawn by extending or modifying the system require higher quality and technical level of the end user and seriously affect the efficiency of drawing, the data needed to draw the elements are separated from the drawing program in this paper. It makes the data highly independent, the drawing program has a high degree of versatility, and uses the database to organize and store the data. At the same time, it provides a customizable control information database management system that can be created, edited and added by the end user. Compared with the custom or secondary development method, the system enables the end user to extend the elements that the system can draw even without modifying the program of the system. The efficiency of drawing digital map of different geographic information is greatly improved. For the electronic data provided by the system must go through data conversion before it can be used by ArcGIS and there is the problem of attribute data loss after conversion. In this paper, the method of organizing and storing the definition information of element class and attribute data of elements is adopted in CAD Cartographic Specification of ESRI Company, so that the graphics drawn by the system can be directly used by ArcGIS without any intermediate processing. This method overcomes the problems of information loss and inefficiency caused by data conversion in the past. Finally, based on the national basic scale of 1: 1000 schema and the corresponding data dictionary, Guangzhou underground pipeline detection technical specification, a control information database management system with 1191 elements and 591 elements is established. The data of 1: 1000 topographic map (a total of 2150 graphic elements) and 1: 500 underground pipeline map (a total of 2530 graphic elements) are used to make the digital map. Then use ArcMap 10.2 software to directly use the mapping system to save the above topographic map and pipeline map of the DWG file. The system tests show that the end user can add, modify and delete the control information of all element classes in the self-defined control information database, and the graphics drawn by the system can be directly used by ArcGIS without any intermediate processing. Compared with the current mainstream mapping system, the use of the system can enable the end user to quickly make the mapping geographic information digital map that meets the needs of the production and project parties, and to a certain extent improve the efficiency of the construction of spatial database.
【學(xué)位授予單位】:江西理工大學(xué)
【學(xué)位級(jí)別】:碩士
【學(xué)位授予年份】:2016
【分類號(hào)】:P208

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