Directed Graph with Node IDs as String

Question

Arun Subramanian 2016-11-9

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/311304-directed-graph-with-node-ids-as-string

评论： Arun Subramanian 2016-11-10

Hi. I am new to graphs in Matlab and started learning it by programming directly. So I have this situation in which one node will be connected to Multiple nodes in a directed graph. I was able to achieve this by using 'digraph' in Matlab. However, the problem comes when I use Node IDs which are string. I am able to achieve it in a single line of code for numerical Node IDs but not for String Node IDs. That is:

G = digraph([1 1] , [2 3]);
plot(G)

I am able to get a directed Graph with three nodes 1, 2 and 3 and the edges being from 1 to 2 and 1 to 3.

When I perform the following code, I get the same result

G = digraph(1 , [2 3]);
plot(G)

However, if i change the numbers to string, I am unable to get a similar result. This is the code I wrote

G = digraph(['v1'] , ['v2' 'v3']);
plot(G)

It gives me only two nodes: v1 and v2v3 and only one edge from v1 to v2v3. But I want is as three nodes and 2 edges:

v1 to v2

v1 to v3

PS: A comma between v2 and v3 did not help.

Please note that I had to write multiple line of code to achieve this but I would like to know if there is a way to put the code in a single line.

G = digraph('v1' , 'v2');
G = addedge(G, 'v1' , 'v3');
plot(G)

This gives me the desired result. But I would like to know if there is a way to do it in a single line.

0 个评论
显示 -2更早的评论隐藏 -2更早的评论

请先登录，再进行评论。

请先登录，再回答此问题。

Answer 1

Steven Lord 2016-11-9

1
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/311304-directed-graph-with-node-ids-as-string#answer_242605

在 MATLAB Online 中打开

When you write the command ['v2' 'v3'] the result is 'v2v3', a 1-by-4 char array. The two char arrays are concatenated together into one larger char array. Instead, use a cell array containing char arrays.

>> G = digraph({'v1'} , {'v2' 'v3'});