Description: I set website development gis, shortest path traveled own inquiry procedure, the speed of an express, 30,000 nodes, 35,000 all ergodic Road, just 1 second. The idea of the shortest path to tell everybody, I hope everyone in the optimization, and use different languages, I was learning delphi, made ready to use delphi library, in this case by the topological relations between the arc/info file for the data source. Which a1, b1, c1 is generated fnode array sort, a1 corresponding fnode, b1 corresponds tnode, c1 corresponds to length, the same a2, b2, c2, is generated tnode array. Indexa1 is a starting point corresponding to its number of connected endpoints, indexb1 corresponds to a particular destination when its connected to the starting point for the number, that is, their topological relations.
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