Algorithm(s) for automatic layout of nodes and connections -

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i'm planning on building subsystem of 1 of projects laying out set of interlinked nodes optimally. nodes represent websites , website pages , connections represent links between pages. user add first page diagram, add additional pages link original page. along way, pages cross-link other pages.

where can start researching algorithms automatically select "clean" paths connection lines, automatically selecting best place position new nodes added , automatically laying out entire diagram?

look @ work done authors of graphviz. website has links of background reading ought tackls.


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