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List:       graphviz-interest
Subject:    Re: [graphviz-interest] Connecting an edge to another edge
From:       Ron Savage <ron () savage ! net ! au>
Date:       2011-12-02 23:27:16
Message-ID: 1322868436.4822.55.camel () zigzag ! savage ! net ! au
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Hi Marc

On Fri, 2011-12-02 at 11:46 -0500, Emden R. Gansner wrote:
> On 12/2/11 11:32 AM, marc.clifton@gmail.com wrote:
> > I need to generate a graph in which I can connect an edge to another edge,
> > like this:
> > 
> > 
> > 
> > A
> > > 
> > > --------C
> > > 
> > > 
> > B
> > 
> > 
> > 
> > Could someone point me in the right direction on what the digraph script
> > would look like?
> You basically have to an extended graph with the additional topology. For the \
> snippet above, you would have something like
> 
> dummy[shape=point width=0]
> {A B C} -- dummy
> 
> If you want the pseudo-edge A -- dummy -- B to be straight, you will need to add \
> additional constraints.

Indeed. Graphviz has many clever options in this area.

See Input file # 22:

http://savage.net.au/Perl-modules/html/graph.easy.marpa/index.html

-- 
Ron Savage
http://savage.net.au/
Ph: 0421 920 622

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