| 摘要 |
PURPOSE:To obtain plural routes, which are different as much as possible, in order to go to the same destination. CONSTITUTION:Any link consisting of the network data of a route presenting area is defined as a calculation start link L0, an optimum route tolly from the calculation start link L0 to all the other links inside the same area is possessed, any one of plural links L1, L2 and L3 branched from an crossing closest to the calculation start link L0 is specified, its passage is regulated, and a subordinate optimum route tolly from the calculation start link L0 to the link for which the passage is regulated such as each link existent inside a regulated area U1, where the optimum route tolly linked from L1, for example, is possessed. |
