Experimenting With Polylines on the Visualization of Eye Tracking Data From Observations of Cartographic Lines

Several visualization methods for eye tracking data exist to help researchers from many disciplines depict data collected in eye tracking experiments. Focusing on eye tracking data from observations of cartographic lines, in this paper we discuss early findings on a new visualization that uses inferred polylines instead of more traditional techniques such as heat maps to visualize eye tracking data. This visualization depicts the average line that is actually seen by subjects, which can be useful in the study of cartographic concepts such as the assessment of the effects of alternative cartographic lines presentations in maps, of distractions, abstraction levels and more.