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IEEE Trans Vis Comput Graph. 2011 Mar;17(3):290-304. doi: 10.1109/TVCG.2010.45.

Hi-trees and their layout.

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Clayton School of IT, Monash University, Wellington Rd, Clayton, Vic 3800, Australia.


We introduce hi-trees, a new visual representation for hierarchical data in which, depending on the kind of parent node, the child relationship is represented using either containment or links. We give a drawing convention for hi-trees based on the standard layered drawing convention for rooted trees, then show how to extend standard bottom-up tree layout algorithms to draw hi-trees in this convention. We also explore a number of other more compact layout styles for layout of larger hi-trees and give algorithms for computing these. Finally, we describe two applications of hi-trees: argument mapping and business decision support.

[Indexed for MEDLINE]

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