Browsing by Author "Kosara, Robert"

Now showing 1 - 3 of 3
  • Thumbnail Image
    Item
    Circular Part-to-Whole Charts Using the Area Visual Cue
    (The Eurographics Association, 2019) Kosara, Robert; Johansson, Jimmy and Sadlo, Filip and Marai, G. Elisabeta
    Studies of chart types can reveal unexplored design spaces, like the circular diagrams used in recent studies on pie charts. In this paper, we explore several variations of part-to-whole charts that use area to represent a fraction within a circle. We find one chart that performs very similarly to the pie chart, even though it is visually more complex. Centered shapes turn out to lead to much worse accuracy than any other stimuli, even the same shape when not centered. These first results point to the need for more systematic explorations of the design spaces around existing charts.
  • Thumbnail Image
    Item
    The Impact of Distribution and Chart Type on Part-to-Whole Comparisons
    (The Eurographics Association, 2019) Kosara, Robert; Johansson, Jimmy and Sadlo, Filip and Marai, G. Elisabeta
    Pie charts and treemaps are commonly used in business settings to show part-to-whole relationships. In a study, we compare pie charts, treemaps, stacked bars, and two circular charts when answering part-to-whole questions with multiple slices and different distributions of values. We find that the circular charts, including the unusual variations, perform better than the treemap, and that their performance depends on whether participants are asked to judge the largest slice or a smaller one.
  • Thumbnail Image
    Item
    TrustVis 2019: Frontmatter
    (The Eurographics Association, 2019) Kosara, Robert; Lawonn, Kai; Linsen, Lars; Smit, Noeska; Kosara, Robert and Lawonn, Kai and Linsen, Lars and Smit, Noeska