摘要
随着大数据的发展以及数据观测技术的进步,以动态地图和动态符号的方式进行流场可视化表达具有广泛的应用前景。针对目前流场动态地图符号表达机制研究不足的问题,本文采用粒子系统方法构建了流场动态地图符号表达模型,基于流场的特点,研究了视觉变量的选取对于流场动态表达效果的影响。然后,以海洋流场数据的可视化实现为例进行验证,结果表明可视化效果良好,可以为矢量场动态符号的应用提供参考。
With the development of big data and the advancement of data observation technology,the visualization of flow fields in the form of dynamic maps and dynamic symbols has broad application prospects. Aiming at the problem of insufficient research for expression mechanism of flow field dynamic map symbols,this paper uses particle system method as the visualization method to construct the flow field dynamic map symbol expression model. Based on the dynamic characteristics of the flow field,this paper studies the influence of the selection of visual variables on the dynamic expression of the flow field. Then,the visualization of the ocean flow field data is taken as an example to verify the visualization effect,which can provide reference for the application of vector field dynamic symbols.
作者
林淑娟
李维庆
杜清运
范甲昊
黎思佳
LIN Shujuan;LI Weiqing;DU Qingyun;FAN Jiahao;LI Sijia;无(School of Resource and Environment Sciences,Wuhan University,Wuhan 430079,China;The Second Surveying,Mapping and Geo-information Engineering Institute of Sichuan Province,Chengdu 610100,China)
出处
《测绘与空间地理信息》
2020年第3期44-48,共5页
Geomatics & Spatial Information Technology
基金
国家自然科学基金资助项目(41571438)
国家重点研发计划资助项目(2016YFC0803106)资助。
关键词
流场
动态符号
视觉变量
粒子系统
flow fields
dynamic symbols
visual variables
particle system
