Re: [igraph] how to subgraph layout coordinates

[Gábor Csárdi]

It is easier than that:

l2 <- l[ my.vertices+1, ]

The +1 is needed because igraph is 0-based, R is 1-based.

Gabor

On Sun, Mar 1, 2009 at 4:55 PM, Simone Gabbriellini
<address@hidden> wrote:
> List,
>
> I am trying to subset coordinates from a layout, because I want to
> plot over an existing plot, and I need the coordinates of nodes to be
> fixed
>
> I tryied something like:
>
> # list of my subset nodes
> core = c(1,2,3,4,5)
>
> l2 <- l[ which( V(g) == core ) ]
>
> but I got the error
>
> Warning message:
> In V(g) + 1 == core :
>  longer object length is not a multiple of shorter object length
>
> can someone point me in the right direction?
>
> thanks,
> simone
>
>
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-- 
Gabor Csardi <address@hidden>     UNIL DGM