Design And Realization Of City Public Information System Based On WebGIS

In order to adapt to the needs of City construction and development, adapt to the global informatization, the development trend of network-based, most of the big cities at home and abroad have in depth development and extensive use of information resources, the use of WebGIS technology, timely, objective release the commercial cities, transportation and cultural and so on city public information, commonly used to provide users with a variety of comprehensive and accurate public information retrieval services.In this paper, engineering background is interconnection Star of "City of Life in Guangdong" spatial information service website, the system using the Internet, to provide electronic maps for the public space, such as information services, from "food, shelter, transportation, travel, purchase, entertaining the" six major topic of the use of WEBGIS technology, the realization of a network of spatial information services, systems using a variety of query mechanisms, user-friendly information, the establishment of the maintenance of the system to update data for public information to update the City has provided an effective means.In this paper, complete the following tasks:1) Analysis of the Guangzhou Municipal Public Information Dissemination System of the contents,of the functional requirements, research WebGIS system architecture of Guangzhou City Public Information Dissemination System to design the overall structure.2) Design and realize of a spatial database of public service information and attributes of the database to achieve an effective spatial data storage and retrieval;3) the bus exchange ride research, designed and implemented based on the characteristics of Guangzhou City Bus site for information retrieval algorithms, with the traditional method of bus exchange ride were compared, the new algorithm is more suitable for the retrieval of spatial information of the conclusion;4) address matching technology research, in view of the data collection characteristics,analyse of the traditional matching algorithm, understanding of the practices from the main map of manufacturers , made pioneering exact match and fuzzy match, the algorithm is simple to achieve, but also greatly reduced the cost of address matching;5) to examine the development of the WebGIS technology, design and realization of space-based WebGIS information systems: on the Internet to provide geographic information, allowing users access through a browser GIS map data, as well as the realization of the basic operations, the geographic target information, Bus exchange ride function and other major development...