Research the application of geographic information system technology on the Internet. Aims to develop a system to provide information for flood risk zones by the Chao Phraya River geographic information system via the Internet. A system has been developed as a Web application to serve data in map format. To view user information. The layer contains all the relevant information, including information on the boundary layer of 14 River cruise. Scope the scope of the provincial, district and subdistrict boundary road flooded areas in the past. Soil drainage basin area size variants. The use of rainfall slope of land of the area. The height of the terrain and the flood risk area. The development of a wide range of software systems, the code is open to all systems such as PostgreSQL/PostGIS Openlayer HeronMC Geoserver QuantumGIS and present information systems risk Proj4 for flood district with the Chao Phraya River geographic information system via the Internet. To support learning to use information to make maps of basin to flood risk management area, Chao Phraya River and is able to organize the presentation of data for flood risk zones by the Chao Phraya River geographic information system via the Internet.
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