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31 13 2005 7
Vol.31 13 Computer Engineering July 2005
· · 2005 A TP311
GIS
1 2 1 1
(1. 200062; 2. 200255)
: , ,
, , Dikstra ,
,
Dijkstra ; ; ;
Implementation of Shortest Path Algorithm
Based on Database Middle-ware GIS
1 2 1 1
NI Kai , YE Lei , LU Ming , ZHANG Chao
(1.Key Laboratory of Geographic Information Science, Ministry of Education, ECNU ,Shanghai 200062;
2.Department of Chain, Shanghai Business School, Shanghai 200255 )
AbstractIn GIS, it is necessary to optimize the analysis function of the shortest path as the hinge of spatial network analysis, which includes
shortest path analysis, resource allocation and isochrone, and so on. Here derived from the traditional calculating method, ie. Dijkstra algorithm, the
query about shortest path is based on relationship database. This technique not only solves the problem of spatial data sharing but also improve the
efficiency of computer system.
Key wordsDijkstra algorithm; Shortest path; Database middle-ware; GIS
GIS
: (1)
,
; (2)
; (3)
; (4)
1.2
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