Re: [igraph] Ruby binding for IGraph coreness

[Gábor Csárdi]

Thomas,

maybe it is better to turn to the author of the Ruby bindings (Alex)
directly, AFAIK he is not on this list. See http://igraph.sf.net ->
Download ->Ruby gem.

Best,
G.

On Wed, Aug 12, 2009 at 4:44 PM, Thomas Plotkowiak<address@hidden> wrote:
> I am experimenting with the ruby binding for igraph and the coreness
> function seems to be broken. I am able to load a graph into memory and run a
> couple of metrics on it, but when it comes to the g.coreness(1) function i
> am getting an array like this:
>
> [0, 1, 0, true, 1, true, true, 1, true, 1, 1, true, true, 1, true, true, 1,
> true, true, true, true, true, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
> true, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
> .... ]
>
>
> According to the manual this function should give me: “This function
> calculates the coreness for each vertex. Return Value: Numeric vector of
> integer numbers giving the coreness of each vertex.” How can “true” be a
> correct value?
>
> If i run the same function in the R Environment in Windows i am getting:
>
> graph.coreness(G, mode="all")
>    [1] 0 5 5 4 5 5 4 5 5 6 5 5 5 5 5 4 5 7 5 5 3 5 5 5 5 1 1 2 1 2 5 1 1 5 1
> 2 1
>   [38] 3 1 1 1 1 2 1 1 2 1 1 1 2 1 1 1 1 1 1 3 1 1 4 3 2 4 1 1 2 3 1 2 2 2 3
> 2 1
>   [75] 5 1 2 1 2 2 1 2 3 4 3 1 3 2 1 2 2 2 2 5 1 1 4 2 2 1 2 2 3 3 2 2 4 2 1
> 3 3
>  [112] 2 3 3 2 1 3 1 1 1 1 4 2 1 1 1 2 1 2 2 1 1 4 1 2 3 4 3 3 4 3 1 4 1 2 2
> 2 5
>  [149] 2 2 3 2 1 2 3 2 2 2 2 2 4 4 1 1 2 4 1 4 2 3 1  ... ]
>
> which definitely seems to be the correct return value.
>
> Anybody got any hints on that or how to fix it?
>
> Cheers
> THomas
>
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>



-- 
Gabor Csardi <address@hidden>     UNIL DGM