[graphviz-interest] Mixing layouts in a single render

Hi all,

I would need to render an image with graphviz showing a directed graph in
usual DOT layout, surrounded by other kinds of layout (I would try neato,
circo or twopi).  The center graph depicts a hierarchy and needs to look
like it at a glance.  The other nodes are "related" in various ways and
would be best placed outside the hierarchy (surrounding or encircling the
hierarchy).

This does not seem possible in a single pass.  Howerver, I think I could
render the hierarchy alone in dot layout and output it in dot format, then
use the nodes positions to force them when rendering it again in
neato/circo/etc format with all nodes.

Is this the way you would do it?  Is there a simpler way, or are there
tools that wrap around or use graphviz to achieve this sort of thing?

Thanks,

Simon

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