Discursive Patinas: Anchoring Discussions in Data Visualizations
Tobias Kauer, Derya Akbaba, Marian D\"ork, Benjamin Bach

TL;DR
This paper introduces discursive patinas, a visualization technique that overlays discussion traces onto data visualizations, enhancing navigation and understanding of online discussions.
Contribution
It presents a novel method for visualizing discussion data directly on visualizations, enabling better contextualization and engagement with comments.
Findings
Patinas improve discussion navigation and comment relevance.
Participants better understand visualizations with patinas.
The technique supports critical and contextual discussions.
Abstract
This paper presents discursive patinas, a technique to visualize discussions onto data visualizations, inspired by how people leave traces in the physical world. While data visualizations are widely discussed in online communities and social media, comments tend to be displayed separately from the visualization and we lack ways to relate these discussions back to the content of the visualization, e.g., to situate comments, explain visual patterns, or question assumptions. In our visualization annotation interface, users can designate areas within the visualization. Discursive patinas are made of overlaid visual marks (anchors), attached to textual comments with category labels, likes, and replies. By coloring and styling the anchors, a meta visualization emerges, showing what and where people comment and annotate the visualization. These patinas show regions of heavy discussions, recent…
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Taxonomy
TopicsData Visualization and Analytics
