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GazePlotter: An open-source solution for the automatic generation of scarf plots from eye-tracking data.

Michaela Vojtechovska1, Stanislav Popelka2

  • 1Department of Geoinformatics, Palacký University Olomouc, 17. listopadu 50, 779 00, Olomouc, Czechia. mail@vojtechovska.com.

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GazePlotter is a new open-source tool that simplifies visualizing eye-tracking data using interactive scarf plots. It makes complex gaze behavior analysis accessible to researchers without programming skills.

Keywords:
Eye-trackingOpen sourceScarf plotVisualisation tool

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Area of Science:

  • Cognitive Science
  • Human-Computer Interaction
  • Data Visualization

Background:

  • Eye-tracking is crucial for understanding perception and decision-making.
  • Visualizing temporal gaze patterns is challenging with existing proprietary or complex tools.

Purpose of the Study:

  • Introduce GazePlotter, an open-source, browser-based application.
  • Lower barriers for visualizing temporally structured eye-tracking data.

Main Methods:

  • Developed an application processing raw eye-tracking exports into interactive scarf plots.
  • Implemented support for dynamic areas of interest, multiple timeline modes, and comparisons.
  • Validated data pipeline against proprietary software and conducted usability testing.

Main Results:

  • GazePlotter generates customizable, interactive scarf plots from various eye-tracking software.
  • The tool supports advanced visualizations and comparisons, running entirely in the browser.
  • Validated data processing showed high agreement with proprietary outputs; usability testing was successful.

Conclusions:

  • GazePlotter democratizes the visual analysis of temporally structured gaze data for researchers.
  • Enables reproducible and shareable data exploration without programming expertise.
  • The workflow is adaptable for any temporally ordered categorical sequence from CSV data.