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Re: issues with GraphPlot

  • To: mathgroup at smc.vnet.net
  • Subject: [mg99226] Re: issues with GraphPlot
  • From: "Sjoerd C. de Vries" <sjoerd.c.devries at gmail.com>
  • Date: Thu, 30 Apr 2009 06:23:22 -0400 (EDT)
  • References: <gsuisc$drq$1@smc.vnet.net> <gt0s27$ec8$1@smc.vnet.net>

Hi Sean,

below is the complete code for the label. Read the Inset doc page for
more details on the parameters I used.

Cheers -- Sjoerd

GraphPlot[{{"B" -> "A", "+"}, {"A" -> "B", "+"}},
 DirectedEdges -> True, VertexLabeling -> True,
 VertexRenderingFunction -> ({White, EdgeForm[Black], Disk[#, .05],
     Black, Text[#2, #1]} &), EdgeLabeling -> True,
 EdgeRenderingFunction -> ({Inset[Text[Style[#3, 16]], Mean[#1], Top,
      Automatic, First[#1] - Last[#1]], Arrowheads[Medium],
     Arrow[#1, 0.07]} &), PlotStyle -> Thickness[0.005]]

On Apr 27, 11:24 am, sean_inc... at yahoo.com wrote:
> Where would the Inset line go?
>
> On Apr 25, 10:39 pm, "Sjoerd C. de Vries" <sjoerd.c.devr... at gmail.com>
> wrote:
>
> > For the label: this is something hat the EdgeRenderingFunction should
> > do. Insert something like Inset[Text[#3], Mean[#1]] in what you
> > already have.
>
> > Cheers -- Sjoerd
>
> > On Apr 25, 10:50 am, sean_inc... at yahoo.com wrote:
>
> > > Hello group,
>
> > > A few things that I just can't figure out.
>
> > > 1. EdgeRenderingFunction ignores edge labels.
>
> > > GraphPlot[{{"B" -> "A" , "+"}, {"A" -> "B", "+"}},
> > >  DirectedEdges -> True, VertexLabeling -> True,
> > >  VertexRenderingFunction -> ({White, EdgeForm[Black], Disk[#, .05],
> > >      Black, Text[#2, #1]} &), EdgeLabeling -> True,
> > >  EdgeRenderingFunction -> ({ Arrowheads[Medium],
> > >      Arrow[#1 , 0.07]} &), PlotStyle -> Thickness[0.005]]
>
> > > 2. As it is, above code produces a graph that is stretched
> > > horizontally a bit too much. About the half the horizontal width work=
s
> > > better for me. How do I accomplish that? AspectRatio-> 1/GoldenRatio
> > > doesn't work since disk gets stretch also.
>
> > > 3. For node A to appear on the left, "B"-> "A" has to be defined
> > > first. If I reverse it, then the node B will appear on the left. What
> > > is the reason for this?
>
> > > Thanks in advance for any info.
>
> > > Sean



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