Hi!

On Sun, Feb 23, 2014 at 9:43 AM, [email protected] <[email protected]>wrote:

>  Hello!
>
> I am trying to use the subcomponent() to find the in-component and
> out-component from a given vertice.
> Here is the source code and result:
>
> > g<-read.graph("input.txt", "edgelist")
>

The "edgelist" file format is indexed from zero, so what is 4 in your file
will be 5 in your graph.

Gabor


> > subcomponent(g, 4, "in")
> [1] 4
> > subcomponent(g, 4, "out")
> [1] 4 3
>  > subcomponent(g, 4, "all")
> [1]  4  3 10  5  7  6  8  2  9
>
>  Here is the input file "input.txt" (a directed network with 10 nodes and
> 10 edges):
> 1   5
> 1   7
> 3   2
> 4   5
> 4   7
> 4   9
> 9   4
> 6   9
> 8   7
> 9   2
>
> But the actual result is should be:
> subcomponent(g, 4, "in"):  4 6 9
> subcomponent(g, 4, "out"):  2 4 5 7 9
> subcomponent(g, 4, "all"):  2 4 5 6 7 9
>
> Why is the results computed by using the function subcomponent( )
> different from the actual result?
>
> best
> Xueming
>
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