%0 Journal Article %T Hadoop 支持下的土地利用变化可视化方法探讨 %T Discussion on visualization of land use change based on Hadoop framework %A 张定祥,安 琼,季宏伟,武建佳,李士江 %A Zhang Dingxiang %A An Qiong %A Ji Hongwei %A Wu Jianjia %A Li Shijiang %J 中国农业信息 %J China agricultural informatics %@ 1672-0423 %V 32 %N 4 %D 2020 %P 32-41 %K 土地利用;基础数据;可视化;Hadoop %K land use;basic data;visualization;big data %X 【目的】掌握土地利用数据量大、数据模型复杂的特点,研究土地利用变化数据可视 化表达模型,有助于探索直观有效的土地利用现状与变化数据的可视化方法。【方法】针对 土地利用现状与变化数据分析展示过程中的时序展示、空间展示、流向变化展示三方面的需 求,创新设计出多年土地利用流向图、多年地类图斑变化视频、三维立体图 3 种展示方法, 研发了相关组件、实例以及 API 接口,并利用 Hadoop 并行技术完成了海量数据快速预处理。 【结果 / 结论】从适用数据、处理流程、展示效果、交互、接口、多图表交互等多个层面结 合研发的土地利用变化可视化成果,较好地实现了土地利用数据的交互式可视化展示,可为 今后海量土地基础数据分析挖掘提供技术支撑。 %X [Purpose]This paper focuses on the characteristics of large amount of land use data and complex data model,studies the visual expression model of land use change data, and explores an intuitive and effective visualization method of land use status and change data. [Method]To meet the needs of time series display,space display and flow map display in the process of land use/change data analysis and display,three display methods,such as multi-year land use flow chart,multi-year pattern change video and three-dimensional stereoscopic map,are designed,relevant components,examples and API interfaces are developed,and mass data rapid pre-processing is completed by using Hadoop parallel technology.[Result/Conclusion]In this paper,the interactive visualization of land use data is realized from the application data,processing flow,display effect,interaction,interface,multi-chart interaction and so on. It can provide technical support for the analysis and mining of massive land basic data in the future. %R 10.12105/j.issn.1672-0423.2020404 %U http://www.cjarrp.com/zgnyxx/ch/reader/view_abstract.aspx %1 JIS Version 3.0.0