Treemaps: visualizing hierarchical and categorical data by Johnson B.S.

By Johnson B.S.

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By Johnson B.S.

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E. perhaps graphical interfaces are useful because they engage graphical reasoning [Fur91]. The design of quality graphic interfaces is a difficult process discussed in [HeI87] [RM90] [SM90] [Tul88]. In [LR90], Langen discusses a development environment which supports an iterative design process. End user flexibility is discussed by Garneau and Holynski in their work on interactively adapting graphic displays [GH89]. Whereas Leung, and Kitakaze and Kasahara focus on the more narrowly defined domains of interfaces for map based diagrams and CRT text blinking, respectively [Leu89] [KK87].

In large or complex diagram detail in the neighborhood surrounding the current focal point is often far more important than information further away, which is presumably less relevant. " Fisheye views are a graphical approach to emphasizing the "interesting" features of large data set [Fur86] [HCMM89] [Kau92] [SB92] [SZB+92] [Noi93]. Typically the degree of interest function is based on a geographic notion of distance from a focal point. Fisheye views of abstract data are based on the simple, fundamental idea of making prominent data items visually prominent by allocating display real estate in a weighted manner.

Explaining the difficulties confronting developers of complex systems using formal tools of behavioral research while emphasizing the need for analysis and iterative testing [Lan88]. Shneiderman also emphasizes the basics of human factors research, while also placing the glorious burden of making the world a better place on the backs of computer professionals [Shn80] [Shn87) [Shn90). The flip side of objective interface evaluation is subjective interface evaluation. Malone tries to determine what makes computer games fun [MaI8I], while LaLomia and Sidowski, and Chin, Diehl, and Norman discuss how to measure user satisfaction [LS90) [CDN88].

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