| Along with the development of the computer technique and city GIS , engineering of city information service is becoming more important content of the city development. Many problems within the processes of city development are related with the spatial information closely. City information service is on the foundation of the city spatial information, and it can't lack of various spatial data. Therefore how to manage and utilize the city spatial data availably is the key issue in city information service.Grid computing makes the huge push function to the GIS development. The grid map under grid computing has already progressed the new stage and new level of information ages.This thesis studies the geographic grid and its application in analyzing the city spatial modality in city information service, adopts the thought of geographic grid and the coding technique to organize and... |