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1、最短路径问题matlab求解详尽MATLAB 求最短路径 利用graphshortestpath 可以求最短路径,具体用法参考MATLAB帮助 Examples: S=1 1 2 2 3 3 4 4 4 4 5 6 6 7 8; %起始节点向量 E=2 3 5 4 4 6 5 7 8 6 7 8 9 9 9; %终止节点向量 W=1 2 12 6 3 4 4 15 7 2 7 7 15 3 10; %边权值向量,有向图,G(9,9)=0; 9个节点 G=sparse(S,E,W); %关联矩阵的稀疏矩阵表示 G(9,9)=0; P=biograph(G,ShowWeights,on);%建立有
2、向图对象P H=view(P);%显示各个路径权值 Dist,Path=graphshortestpath(G,1,9,Method,Dijkstra) %求节点1到节点9的最短路径 set(H.Nodes(Path),Color,1 0.4 0.4);%以下三条语句用红色修饰最短路径 edges=getedgesbynodeid(H,get(H.Nodes(Path),ID); set(edges,LineColor,1 0 0); set(edges,LineWidth,2.0); %以下是运行结果,节点1到节点9的最短路径为19 Dist = 19 Path = 1 3 4 5 7 9
3、利用graphallshortestpaths可以求出所有最短路径 Dists=graphallshortestpaths(G) %求所有最短路径 Dists = 0 1 2 5 9 6 16 12 19 Inf 0 Inf 6 10 8 17 13 20 Inf Inf 0 3 7 4 14 10 17 Inf Inf Inf 0 4 2 11 7 14 Inf Inf Inf Inf 0 Inf 7 Inf 10 Inf Inf Inf Inf Inf 0 Inf 7 15 Inf Inf Inf Inf Inf Inf 0 Inf 3 Inf Inf Inf Inf Inf Inf Inf 0 10 Inf Inf Inf Inf Inf Inf Inf Inf 0