摘要
基于Web GIS提供高效、可操作性强的电力GIS服务是电力GIS平台的宗旨,电力专题图是电力GIS建设的重要内容。本文在综合分析后端服务器成图和前端Web成图两种方案特点的基础上,提出一种新的电力专题图Web端成图方法。该方法通过改进通用GIS模型,引入字体符号建立以字符符号为主,位图符号和矢量符号为辅的综合符号体系,提高了模型表现力和渲染效率。同时,通过前端数据缓存、内存空间索引和局部要素刷新等机制,降低渲染计算量,提高成图效率。实验和应用效果表明,与现有的后端成图和前端成图方法相比,本文提出的Web端电力专题图成图方法极大地改善了渲染效果,提高了成图效率,提升了用户的使用体验。
It is the purpose of power GIS platform to provide efficient and operable GIS service for power company based on Web GIS,and power thematic map is an important content of it.Based on the comprehensive analysis of back-end server mapping and front-end Web mapping,this paper proposes a novel Web mapping scheme for power thematic graph.In this scheme,the general GIS model is improved,and the font symbols are applied to establish a integrated symbol system with character symbols,bitmap symbols and vector symbols,which can improve the interactive expression and rendering efficiency.By utilizing mechanisms such as front-end data caching,memory space indexing,and local feature refresh,the computational complexity of front-end mapping is reduced.The experimental and application results show that compared with existing back-end and front-end mapping methods,the Web power thematic mapping method proposed in this paper greatly improves the rendering effect,improves the mapping efficiency,and enhances the user experience.
作者
冯烨
吴燕华
吴剑敏
FENG Ye;WU Yanhua;WU Jianmin(Zhejiang Huayun Information Technology Co.,Ltd.,Hangzhou,Zhejiang 310008,China)
出处
《自动化应用》
2023年第16期66-69,共4页
Automation Application
