基于MapReduce的VCT3.0多图层面间接线并行构建算法  

Parallel Construction Algorithm of Indirect Lines for Polygon of Multi-layers in VCT3.0 Based on MapReduce

作　　者：陈云[1] CHEN Yun(Xiamen Kingtop Information Technology Co.,Ltd.,Xiamen 361008,China)

机构地区：[1]厦门精图信息技术有限公司,福建厦门361008

出　　处：《测绘地理信息》2022年第3期157-160,共4页Journal of Geomatics

基　　金：智慧城市高分卫星综合应用服务平台研发及产业化项目(77-Y40G26-9001-18/20)。

摘　　要：VCT是土地利用中的一种重要格式。当矢量数据导成VCT3.0格式时需要使用间接坐标描述面要素,封闭边界由线要素组成。提出一种多图层面要素的间接线并行构建算法,将面要素的空间信息快速精确地转化为VCT3.0标准的间接线数据,更符合实际应用要求。通过KingMap V6.0平台实现了算法,并用实际数据进行测试,验证了算法的可行性和正确性。VCT is an important format in land use. Indirect coordinates are used to describe the surface elements when vector data are derived into VCT3. 0 format,and the closed boundary is composed of line elements. We propose an indirect line parallel construction algorithm for surface elements of multi-layers to transform the spatial information of surface elements into indirect line data of VCT3. 0 standard quickly and accurately,which is more in line with practical application requirements. The algorithm is implemented in KingMap V6. 0platform and tested with real data,which verifies its feasibility and correctness.

关 键 词：VCT 间接线 并行构建 KingMap 第三次全国国土调查 

分 类 号：P208[天文地球—地图制图学与地理信息工程]