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Re: [igraph] Ego-centric graphing using weighted edges

From: Gábor Csárdi
Subject: Re: [igraph] Ego-centric graphing using weighted edges
Date: Sun, 13 Mar 2011 23:52:04 -0400


F-R is fine, all you would need is 1) a weighted implementation, which
we already have in the development branch, as I understand, and 2) the
ability to fix some vertices, in this case ego in the middle. This we
don't have. I have created a bug report for it, you can follow it


On Sun, Mar 13, 2011 at 4:47 AM, Rick Welykochy <address@hidden> wrote:
> Hi all,
> I've been playing with the F-R algorithm with weighted edges
> to layout time series data.
> The graph nodes are individual time series and the weighted
> edges are the cross correlations between two time series.
> F-R does lay the graph out in a pleasing format, but I'm after
> more.
> I would like to nominate a node to be the centre of the graph
> and have the layout chose the distance of neighbouring nodes
> to be directly proportional to the strength of the edge
> weight. The more two nodes correlate, the closer together
> they are.
> Perhaps F-R is not suited for this task. Any recommendations
> on a layout algorithm (and graph package if not igraph) to
> accomplish this?
> tia,
> rick w
> --
> _________________________________
> Rick Welykochy || Praxis Services
> For every complex problem, there is a solution that is simple, neat, and
> wrong.
>     -- H.L. Mencken
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Gabor Csardi <address@hidden>     UNIL DGM

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