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GraphPlot


Hi,
	I have a question about extracting data from the internals of  
GraphPlot.  For example, the following code plots multiple subplots  
of disconnected clusters.

<< DiscreteMath`GraphPlot`
n = 129;
d = Table[i -> Mod[i^2, n], {i, 0, n - 1}];
GraphPlot[d];

However, I would like to know the subsets that are being plotted.  I  
know you can plot the vertex labels on the chart, but my dataset is  
~50,000 connected vertices and GraphPlot outputs ~100 clusters, so  
vertex labeling is unrealistic.  It would be very interesting to know  
which vertices GraphPlot has associated.  There maybe a way to do  
this using some functions from "Combninatorica" but I have not been  
able to find them.  Can anyone help?

Thanks,
Matt


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