Shortest Possible Path from All Nodes in a Graph

5 次查看（过去 30 天）
A M
A M 2017-1-26
回答： Walter Roberson 2017-1-27
[dist,path,pred] = graphshortestpath(DG,1,6) would return shortest path from Node 1 to Node 6 in a graph. Is there any way to find shortest paths from all other nodes (i.e. 2,3,4 and 5) to the destination (i.e. 6) simultaneously with one MATLAB command?

请先登录，再回答此问题。

采纳的回答

Walter Roberson
Walter Roberson 2017-1-27
No, there is no built-in command for that. You could look in the File Exchange.
If you have a vector of source node numbers, s, and a vector of destination (target) node numbers, t, and for any given index K, the distance from node number s(K) to destination t(K) is given by cost c(K), and you only fill in the list in one direction (assume that the backwards links will automatically be filled in by the software), then
maxnode = max([s(:), t(:)]);
sendpaths = cell(maxnode, 1);
G = graph(s, t, c);
for K = 1 : maxnode
sendpaths{K} = shortestpath(G, K, sinknode);
end

更多回答（0 个）

类别

在 Help Center 和 File Exchange 中查找有关 Graph and Network Algorithms 的更多信息

标签

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by