The Influence of Contour on Similarity Perception of Star Glyphs

Johannes Fuchs 1 Petra Isenberg 2 Anastasia Bezerianos 3, 4 Fabian Fischer 5 Enrico Bertini 6
1 Data Analysis and Visualization
Chair for Data Analysis and Visualization
2 AVIZ - Analysis and Visualization
Inria Saclay - Ile de France
3 IN-SITU - Situated interaction
LRI - Laboratoire de Recherche en Informatique, UP11 - Université Paris-Sud - Paris 11, Inria Saclay - Ile de France, CNRS - Centre National de la Recherche Scientifique : UMR8623
Abstract : We conducted three experiments to investigate the effects of contours on the detection of data similarity with star glyph variations. A star glyph is a small, compact, data graphic that represents a multi-dimensional data point. Star glyphs are often used in small-multiple settings, to represent data points in tables, on maps, or as overlays on other types of data graphics. In these settings, an important task is the visual comparison of the data points encoded in the star glyph, for example to find other similar data points or outliers. We hypothesized that for data comparisons, the overall shape of a star glyph---enhanced through contour lines--- would aid the viewer in making accurate similarity judgments. To test this hypothesis, we conducted three experiments. In our first experiment, we explored how the use of contours influenced how visualization experts and trained novices chose glyphs with similar data values. Our results showed that glyphs without contours make the detection of data similarity easier. Given these results, we conducted a second study to understand intuitive notions of similarity. Star glyphs without contours most intuitively supported the detection of data similarity. In a third experiment, we tested the effect of star glyph reference structures (i.e., tickmarks and gridlines) on the detection of similarity. Surprisingly, our results show that adding reference structures does improve the correctness of similarity judgments for star glyphs with contours, but not for the standard star glyph. As a result of these experiments, we conclude that the simple star glyph without contours performs best under several criteria, reinforcing its practice and popularity in the literature. Contours seem to enhance the detection of other types of similarity, e.g., shape similarity and are distracting when data similarity has to be judged. Based on these findings we provide design considerations regarding the use of contours and reference structures on star glyphs.
Type de document :
Article dans une revue
IEEE Transactions on Visualization and Computer Graphics, Institute of Electrical and Electronics Engineers, 2014, 20 (12), pp.2251-2260. 〈10.1109/TVCG.2014.2346426〉
Liste complète des métadonnées

Littérature citée [34 références]  Voir  Masquer  Télécharger


https://hal.inria.fr/hal-01023867
Contributeur : Petra Isenberg <>
Soumis le : mercredi 17 décembre 2014 - 16:16:01
Dernière modification le : jeudi 9 novembre 2017 - 16:42:28
Document(s) archivé(s) le : lundi 23 mars 2015 - 15:41:16

Fichiers

Fuchs_2014_TIO.pdf
Fichiers produits par l'(les) auteur(s)

Identifiants

Collections

Citation

Johannes Fuchs, Petra Isenberg, Anastasia Bezerianos, Fabian Fischer, Enrico Bertini. The Influence of Contour on Similarity Perception of Star Glyphs. IEEE Transactions on Visualization and Computer Graphics, Institute of Electrical and Electronics Engineers, 2014, 20 (12), pp.2251-2260. 〈10.1109/TVCG.2014.2346426〉. 〈hal-01023867〉

Partager

Métriques

Consultations de la notice

275

Téléchargements de fichiers

574