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《Geomatics World》 2018-03
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A Method for Calculating Region Area Based on Geographic Subdivision Grid

QI Chengyu;CHENG Chengqi;PU Guoliang;CHEN Bo;Institute of Remote Sensing and Geographic Information System, Peking University;College of Engineering, Peking University;  
Area calculation is the basis of regional analysis. With the development of geospatial information subdivision organization theory, the discrete global grid has been widely concerned and shows the potential of spatial big data organization capabilities. Different spherical shapes in the spherical space and the European space lead to different features of the earth's subdivision grid. When calculating the area, the grid needs to be converted back to the corresponding latitude and longitude range, and then the integral operation is performed. The flow is complicated and the calculation efficiency is not high. Therefore, based on the GeoS OT global subdivision grid reference scheme, a feasible and efficient area calculation method that can get rid of latitude and longitude and integral operation is designed based on matrix transformation including block division and adjacency, and vector multiplication operation. The feasibility and efficiency of the algorithm have been examined, and the method provides a new idea for area calculation under the global grid system.
【Fund】: 国家重点研发计划项目(2017YFB0503700);; 高分辨率对地观测系统国家重大专项(11-Y20A02-9001-16/17 30-Y20A01-9003-16/17 30-Y30B13-9003-14/16);; 测绘地理信息公益性行业科研专项(201512020)资助
【CateGory Index】: P208
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