【摘要】 提出了地震应急态势标绘元素的分类体系,并设计基于此体系的态势标绘元素的可视化符号库,此符号库包括:基元符号层、单元符号层和表现符号层。研究了态势标绘元素基于GIS的显示方法与实现流程,采用基于哈希表的虚拟图层控制器实现态势符号的显示管理。建设南京市地震突发事件救灾应急平台,在平台中实现态势标绘模块。通过实际应急演练,验证了本研究的态势标绘技术的可行性和有效性。更多还原

【Abstract】 The classifications of earthquake emergency situation map elements are put forwarded,and the visualization symbol library of situation map elements is designed based the classifications.The library is composed of basic symbol level,unit symbol level and representation level.GIS based display method and realization procedure of the situation elements are described.A hash table based virtual layer manager is adopted to realize the display management of situation plotting symbols.Through constructing Nanjing earthquake emergency platform,the situation plotting module is realized.The feasibility and effectiveness of the situation plotting technology studied in this paper is verified in a real earthquake emergency drill.更多还原