GIS approach to flood prevention information system
Miao Zuo · Cehui kexue · 2005
The paper presents a theoretical base which for information system construction. The theory of space mathematical base of large scale GIS and the digital earth is a new theory for GIS overcoming the shortage of traditional spatial mathematical base. In order to satisfy the requirement of water conservancy system, The author brings forward a vectorgrid coalescence mentality which sustained by the technology of GIS. Base on the mentality the paper presents a technical channel for flood prevention information system. The technical channel employed the DRG as the context reference. At the context reference the consumer can label the symbol of spatial entity symbol at any time. The new method for GIS construction will have nicer implementation foreground. The paper also describes the design and realization of some key technology.