Data Organization and Management Based on PDA

摘要：

This paper makes a research on the application of GIS system to intelligent terminal PDA and its capability and storage mechanism. It studies how to organize and manage the massive regular grid data of GIS real-timely and visually while the storage capability and speed is so limited. On organization of grid data, it puts forward a data management model that combined pyramid model with one-to-four Quad-tree index; and, about data dynamic display, it introduces hierarchical dynamic simplify method(HDS) to reduce the amount of data in different resolutions and further improve the efficiency of visual interaction in PDA. In this way, we give a solution for the mobile GIS which developed by Embedded Visual Basic based on the integration of GPS/GIS, then we implement this system in fire-control GIS.

关键词： Embedded GIS pyramid model one-to-four Quad-tree

作者: Jianlian Li Dengwen Gan Jihua Ye Xiaoxu Ouyang

作者单位: College of Computer Information and Engineering,Jiangxi Normal University,Nanchang, China

会议类型: 国际会议

会议名称: 第四届国际计算机新科技与教育学术会议(2009 4th International Conference on Computer Science & Education)

会议地点: 南京

会议语种:英文

页码: 804-807

在线出版日期: 2009-07-25（万方平台首次上网日期，不代表论文的发表时间）