【摘要】 以动态现象的表达、监控为主要任务的电子地图,具有四个功能:过程再现、实时跟踪、变化推演和变化模拟,分别对应时态特征上的过去式、进行式、将来式和虚拟语气。其设计原理与其他电子地图的差别表现为:地理背景底图的动态性,比例尺设计与时间有关,符号设计需扩充Bertin参量体系而引入动态参量,要顾及用户对变化过程的交互式控制。本文从地图设计角度讨论了这类地图的设计原理与方法,并应用到面向水路航务管理的电子航道图设计中,实现航标位置、工作状态的全天候远程监控。更多还原

【Abstract】 The dynamic electronic map has the functions of post-displaying the past changes, real-time tracing the changes being happened, predicting the changes to be happened and virtual simulating the changes not actually existing. The design of this kind of electronic map has to consider the properties to determine the background layer in a dynamic way, to utilize the temporal scale and temporal generalization, to extend symbol parameters into time related domain, to visualize the change information by multi-scale representation, and to consider the interactive action to control change phenomena. Based on the development experiences, this paper presents the design principles and methods about the aspects above in detail. An example is investigated to design an inland chart to moniter the position and working status of buoys.更多还原