EuroVisShort2015

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https://diglib.eg.org/handle/10.2312/12463

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Browsing EuroVisShort2015 by Subject "H.5.2 [Information Interfaces and Presentation]"

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    Interaction with Uncertainty in Visualisations
    (The Eurographics Association, 2015) Sarkar, Advait; Blackwell, Alan F.; Jamnik, Mateja; Spott, Martin; E. Bertini and J. Kennedy and E. Puppo
    In recent years, a number of algorithms have been developed which provide fast approximate computations on large datasets. There is considerable interest in exploiting these techniques to render interactive visualisations of large datasets. Such interactions require careful consideration of the uncertainty arising from the approximations that these algorithms employ. Characterising and comparing visualisations of uncertainty has been well studied; however, it is typically assumed that uncertainty is a fixed property of the data. In light of this new generation of approximate visualisations, we consider the case where uncertainty arises from algorithms whose parameters can be altered, and so can be manipulated just like any other aspect of the visualisation. We present a novel directmanipulation interface for uncertainty in visualisations and show through a user study that our interface enables people to successfully edit and comprehend uncertainty.
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    PoPI: Glyph Designs for Collaborative Filtering on Interactive Tabletops
    (The Eurographics Association, 2015) Charleer, Sven; Klerkx, Joris; Duval, Erik; E. Bertini and J. Kennedy and E. Puppo
    Filtering data on a visualization can be a challenge when multiple people work on a shared visualization, for instance on an interactive tabletop. Visualizations can present data that satisfy the union of all user filters, or data lenses can provide individual views on parts of the data. To support per-user filters simultaneously across a shared visualization, we explore different glyph approaches that complement data points with per-user filter status information. Adding physical positions of users around the tabletop as an extra attribute to the glyph, we attempt to lower the cognitive load required to map filter statuses to corresponding participants. This work presents the design choices, briefly covers technical development, reports on the evaluation results and points out possibilities for future work.