The Open Cybernetics & Systemics Journal
2014, 8 : 889-895Published online 2014 December 31. DOI: 10.2174/1874110X014080100889
Publisher ID: TOCSJ-8-889
An Equal Area Quad-tree Global Discrete Grid Subdivision Algorithm Based on Latitude and Longitude Lines
Department of Information
Engineering, North China University of Water Resources and Electric
Power, Zhengzhou, 450046, China.
ABSTRACT
In order to effectively solve the problems of global discrete grid in spatial data management and operations, a novel equal area quad-tree global discrete grid subdivision model based on latitude and longitude lines is proposed in this paper. Coding rules of grid cells, and geometric distortion calculation and analysis of the grid model are also given in the detailed subdivision process. The results have shown that the proposed grid cell has simple structure and stable geometric distortion. Meanwhile, it features hierarchy and nested structure and thus facilitates multi-resolution modelling.