[BioC] Rgraphviz problem

[Li.Long at isb-sib.ch]

I don't think you could specify the node position.  The node position is
calculated based on the selected algorithm.

You could probably try to do a bigger plot, or plot the graph part by part.

Li

> Dear list,
>
> I am using the Rgraphviz("1.10.0”) to layout a graph. I would like to
> change
> the positions of some nodes (node center). But it seems the node center is
> not an attribute for the node, and I can not set them in the “nodeAttrs”
> in
> the "agopen".
> The reason to do this is because when I plot the graph, the warning
> message
> says “zero-length arrow is of indeterminate angle and so skipped”. I
> checked
> the result graph and found that some nodes are very close and the arrows
> between them were not drawn. So, I would like to change the node positions
> for them and replot the graph.
> Could some one help with this?
>
> Thanks,
> /Mike
>
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