[graphviz-interest] 'grid' - a new dot option?

Hi

I assume this can't be done right now, but is it feasible or even 
imaginable that dot could have a new option to impose a grid on the graph?

My idea is that we'd still have all - or most of - the options for 
defining nodes and edges, but each node would havingto have an attribute 
being an (x, y) pair, with the centroid of the node at that (x, y), and 
with the meaning that the node is not to be moved.

In other words, the graph could be imagined as graph paper, with an 
implicit, i,e, invisible, grid each way, and with the nodes forced to 
reside at intersections of this grid. The grid could of course be made 
visible with an option.

This clearly impacts on the amazing ability of dot to move nodes and 
re-route edges, but I'm dreaming of somehow disabling this aspect of the 
code.

Ideas, anyone?

-- 
Ron Savage - savage.net.au
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