中文说明：求网络最短路问题，根据弧段的权值，利用Matlab求最短路，可以根据节点坐标绘制出网络图，求得最短路可绘制在网络图上，清晰明了。
English Description：
Network seeking the shortest path problem, according to the weight of the arc, using Matlab for the most shorted, you can draw a network diagram based on the node coordinate, and seek the shortest path can be plotted on the network map, clear.