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Navigation patterns and usability of zoomable user interfaces with and without an overview

jeu, 05/08/2008 - 15:39 — admin

Publication Type:

Journal Article

Authors:

Hornb{\ae}k, K.; Bederson, B.B.; Plaisant, C.

Source:

ACM Transactions on Computer-Human Interaction (TOCHI), Volume 9, p.362-389 (2002)

Keywords:

experimentation; human factors; information interfaces and presentation; Information Visualization; interaction styles; levels of detail; maps; measurements; navigation; overview; oveview+detail interfaces; performance; usability; user interfaces; zoomable user inte

Abstract:

The literature on information visualization establishes the usability of interfaces with an overview
of the information space, but for zoomable user interfaces, results are mixed.We compare zoomable
user interfaces with and without an overview to understand the navigation patterns and usability
of these interfaces. Thirty-two subjects solved navigation and browsing tasks on two maps. We
found no difference between interfaces in subjects? ability to solve tasks correctly. Eighty percent
of the subjects preferred the interface with an overview, stating that it supported navigation and
helped keep track of their position on the map. However, subjects were faster with the interface
without an overview when using one of the two maps. We conjecture that this difference was due
to the organization of that map in multiple levels, which rendered the overview unnecessary by
providing richer navigation cues through semantic zooming. The combination of that map and the
interface without an overview also improved subjects? recall of objects on the map. Subjects who
switched between the overview and the detail windows used more time, suggesting that integration
of overview and detail windows adds complexity and requires additional mental and motor effort.

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The spatial-perceptual design space: a new comprehension for data visualization[dagger]

jeu, 05/08/2008 - 15:39 — admin

Publication Type:

Journal Article

Authors:

Rodrigues, J.F.; Traina, A.J.M.; de Oliveira, M.C.F.; Traina, C.

Source:

Inf Visualization, Volume 6, p.261-279 (2007)

URL:

http://dx.doi.org/10.1057/palgrave.ivs.9500161

Keywords:

Data visualization; design space; information visualization; taxonomy; visualization model

Abstract:

We revisit the design space of visualizations aiming at identifying and relating its components. In this sense, we establish a model to examine the process through which visualizations become expressive for users. This model has lead us to a taxonomy oriented to the human visual perception. The essence of this taxonomy provides natural criteria in order to delineate a novel understanding for the design space of visualizations. From such understanding, we elaborate a model for generalized design. The model poses an intuitive comprehension for the visualization design space departing from fundamental pre-attentive stimuli and from perceptual phenomena. The paper is presented as a survey, its structure introduces an alternative conceptual organization for the space of techniques concerning visual analysis.

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