| Resources and environment problems have been Chinese 21 actual sustainable development strategy of the core problem. The management of resource and environmental is the main feature of geographic information industry. In the background of information, geographical information industry will play an increasing role in the development of society, economy and culture.The intelligent and automation of geographic information processing is the main factor of impacting the development of geographical information industry. In reality, drawing question which include map annotation issues is always embarrassing the intelligent and automation of geographic information processing, which seriously restrict the development of geographic information science. Automatic electronic map annotation problem is an international frontier problem of GIS area, and also the main problem of map automation, whose research plays an important role in theoretical and practical significance of geographic information field.In order to make the electronic map output images more clear and beautiful and minimize the defects of note information, we need label geographical elements dynamically. Electronic map automatic note system is composed by three parts, data management module, data pretreatment module and note module, which has two big functions, electronic map data management and map plot. Map data management provides user storing and operating various geographic data, and provides geographic data catalogue of management tools, data processing tools, and implements distribution, multi-source, heterogeneous data integration management, and make the geographic data access and management easier. Map plot is available for users to edit maps data in engineering management organization way data map, and provides many kinds of tools such as layer management, graphics and text marking plot, military plot, control tools of map showing, it can quickly implement data map symbolic and output electronic map. |
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