RESEARCH ON METHOD OF GML INDEXING BASED ON IMPROVED QUAD-TREE
Zhang Xiaodong 1) ;Wang Liang 2) ;Han Liqin 3) ;Lan Xiaoji 3) ; and Wang Zhihong 3)
1Department of Surveying and Mapping Engineering of Gansu Industry Polytechnic College，Tianshui 7410252School of Mechanical&Electrical EngineeringJiangxi University of Science and Technology, Ganzhou 3410003Faculty of Architectural and Surveying Engineering,Jiangxi University of Science and Technology, Ganzhou 341000
Abstract GML is an international standard, it solves the spatial data sharing problem perfectly. For the existing GML indexing technologies, QuadTree indexing technique has a high efficeency. In order to diminish spatial data redundancy, the traditional indexing method had been amended.Then LINQ and joining spatial operation methods had been used to support GML query operation. The experiment proves that the improved traditional QuadTree has raised the performerce of the GML indexing technique efficientcy.
