MapX is an ActiveX control product with powerful map analysis functions offered by Maplnfo Company.Because It does not support the topology of spatial data, the shortest path analysis has become a hot potato for MapX users to develop application systems. In this paper, several key technologies to establish the road topology structure based on MapX are discussed. On the base, an algorithm for finding the shortest path in road network is presented, and experimental result shows that the proposed algorithm is more practical and effective. At last, a brief conclusion as well as the expectation for the further study is made.
Road traffic is the most widely used for transport security, which have the significant disaster vulnerability. It often becomes the weak link when the evacuation and rescue. MapX is an ActiveX control product with powerful map analysis functions offered by MapInfo Company. Because it does not support the topology of spatial data, the shortest path analysis has become a hot potato for users to develop application systems. In this paper, several key technologies to establish topology structure of road network based on MapX are discussed. On the base, an algorithm for finding the shortest path in post-disaster road network is presented, and experimental results show that the proposed algorithm is more practical and effective. At last, a brief conclusion as well as the expectation for the further study is made.
Natural disasters often cause damages in different degrees to the road network, the topology analysis for the damaged road network has become more valuable and meaningful. In this paper, several key technologies to establish topological structures of the damaged road network based on MapX are discussed. On the base, an algorithm for finding the shortest path in the damaged road network is presented. At last, a brief conclusion as well as the expectation for the further study is made. This algorithm has been well applied in the Decision-making Analysis System for Highway Transportation, and the probation shows that it is faster and more flexible in the practical application.
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