| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a kick distance measuring method capable of preventing the generation of a shortest route selection miss at a low cost even when there are plural barriers. SOLUTION: Shortest routes and their distances from an objective facility (a railroad station, an elementary school, a large storage, or the like) M1 up to all kick facilities (a crossing, a bridge, etc.), A1, A2, B1 to B3 allowed to be reaches directly without intersecting barriers (obstacles such as a railroad and a river) A, B or by passing other kick facilitate are previously found out. When a route R1 and the objective facility M1 are specified and a straight line connecting the route R1 to the facility M1 intersects with the barriers A, B, distances from the route R1 up to the kick facilities A2, B1 allowed to be directly reached without intersecting with the barriers A, B are found out at first. Then a shortest distance from the route R1 up to the objective facility M1 is found out based on the previously found shortest distances from the kick facilities A2, B1 up to the facility M1 and the distance from the route R1 up to the kick facilities A2, B1 and the shortest distance is determined as a kick distance from the route R1 up to the facility M1.</p> |
