GIS played an important role in this field by its good function of multi-source data integration, spatial analysis and decision-aiding.
GIS提供的多源数据集成能力、强大的空间分析能力和辅助决策能力在公共安全的预警预报、监测、灾情评估中发挥了重大作用。
The observer sitting problem is important in terrain visibility analysis and is widely used in spatial information aid decision, telecom, and animal protection and so on.
观察点设置问题是地形可视性分析中的一类重要问题，在空间信息辅助决策、电信、野生动物保护等领域有着广泛的应用。
This paper mainly studied and implemented GIS spatial analysis of pipe network-related functions, and application-related functions to provide decision support for emergency dealing.
本篇论文主要研究并实现管网GIS空间分析相关功能，并应用相关功能为应急处理提供决策支持。
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