EuroVis · 2022
Where did my Lines go? Visualizing Missing Data in Parallel Coordinates
Alex Bäuerle, Christian van Onzenoodt, Simon der Kinderen, Jimmy Johansson Westberg, Daniel Jönsson, and Timo Ropinski
Abstract
We evaluate visualization concepts for parallel coordinates to represent missing values and focus on the trade-off between the ability to perceive missing values and the concept's impact on common parallel coordinates tasks. We performed a crowd-sourced, quantitative user study with 732 participants comparing the concepts and their variations using five real-world data sets. Based on our findings, we provide suggestions regarding which visual encoding works best depending on the task at focus.