| 摘要 |
<p>A method of coding a road network for navigation purposes comprising the step of generating a directed graph in respect of said road network, the directed graph comprising a node or vertex V1 to V10 corresponding to each of the roads R1 to R10 of the road network, and one or more weighted arcs A1-2, A2-1 etc., corresponding to each of the road junctions J1 to J4, interconnecting said nodes or vertices V1 to V10 (Figures 1 and 2). <IMAGE></p> |
