graph and conncomp examples

In the example given for conncomp it has this:

graph([1 1 4],[2 3 5],[1 1 1],6);

I do not understand how this leads to the graph which is displayed. The documentation for graph is not clear about this either. Can anyone explain how graph actually operates in this case in a really simple way?

Answer 1

[KALYAN ACHARJYA]

G=graph([1 1 4],[2 3 5],[1 1 1],6);
plot(G);

[Pa342]

I know it plots this, I doesn't understand WHY it plots this...

[KALYAN ACHARJYA]

Check here more

[Pa342]

For:

G=graph([1 1 4],[2 3 5],[1 1 1],6)

From the first two inputs, [1 1 4],[2 3 5], I understand that an edge is created from the element of the first input to the element of the second input i.e.:

1 goes to 2; 1 goes to 3 and 4 goes to 5.

What I do not understand is the next two inputs [1,1,1],6 or how they relate to the first two inputs.

[Walter Roberson]

G = graph(S,T,WEIGHTS,NUM) specifies the number of nodes of the graph

with the numeric scalar NUM. NUM must be greater than or equal to the

largest elements in S and T.

So you are using weights 1, 1, and 1 for the edges, and you are telling it that there are 6 nodes. You want to tell it the number of nodes because your edge specifications do not necessarily include any link to or from all of your nodes.

[Pa342]

Thanks Walter, I understand it now.