By Molenberghs G., Thijs H., Jansen I.
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Other innovative approaches include the generation of mazes for users to navigate through [Lm91] and displays of nested boxes [Tra89]. Travers use of nested boxes is particularly interesting as the displays are very similar to small treemaps. In particular, "The intricate structure of the knowledge base is conveyed by a combination of position, size, color, and font cues" [Tra89]. " [Br088] It has been argued for a long time the representation crucial importance to understanding of a problem is of and solving it.
Nodes are usually separated on a 2-D planar display space and the structure of the hierarchy is often of primary interest. Tree drawing algorithms have traditionally sought efficient and esthetically pleasing methods for the layout of node and link diagrams. These layouts are based on static presentations and are common in texts dealing with graph theory and data structures. They are excellent visualization tools for small trees pixels might be used to draw the diagram, the remaining pixels constitute the background.
The treemap drawing and tracking algorithms add to the body of research concerning the graphic presentation of data. 1 Depicting Hierarchy Presentations of hierarchical information range from those methods based en- tirely on text, to methods based almost entirely on graphics. A rich body of literature concerning outlines, tables of contents, and tree drawing already exists. With the advent of powerful graphically based computers it is now possible to interactively present complicated data visualizations on personal computers.