面向GIS的可自定成圖系統(tǒng)的研制
[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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