大型网络拓扑的动态注记研究  

The study of dynamic annotation on large network topology

作　　者：樊文有[1,2] 王玲玲[1] 沈越驹 兰继雄 FAN Wenyou;WANG Lingling;SHEN Yueju;LAN Jixiong(China University of Geosciences(Wuhan), Wuhan, 430074;the Greatmap Co., Ltd., Beijing 100085,China)

机构地区：[1]中国地质大学(武汉),湖北武汉430074 [2]北京天耀宏图科技有限公司,北京100085

出　　处：《地理信息世界》2016年第4期14-19,共6页Geomatics World

基　　金：国家863计划(2014AA123001)资助

摘　　要：注记能让使用者能明白地图上点、线、面的信息,批量标注注记是电子注记中的难题。电子注记要考虑点要素、注记是否在屏幕内,点要素在屏幕内移动时注记是否动态避让,最后是注记配置的时间效率。针对大型复杂网络拓扑中点要素注记位置的动态配置问题,使用矩形相交法为点要素配置注记位置,根据时间效率对模型进行优化。模型使用html5、css、javascript技术实现,可直接在浏览器中显示点要素和注记,并验证正确率,并已经在网络拓扑可视化中得到应用。Annotation is the illustration information of point, line and area on the map. Labeling the annotation is oneof the difficult problems of electronicmap. Electronic annotation needs to consider many aspects. first, point annotationwithin the screen; second, some points moving within the screen, annotation dynamic avoidance, the last is time efficiencyof labeling annotation. For the problems are the dynamic configuration of point in large complex network topology, usingthe rectangular intersecting method for point elements configuration annotation, and according to the time efficiency tooptimize the model. Using the technologies of HTML, CSS and JavaScript implementation model, can directly displaythe point element and annotation in the browser, and verify the accuracy. This model was already applied in the networktopology visualization.

关 键 词：点注记 动态避让 矩形相交法 

分 类 号：P2[天文地球—测绘科学与技术] TP393.02[自动化与计算机技术—计算机应用技术]