Abstract
Lots of tools can be used to analyze or visualize eye movement data. This chapter will overview the format of the eye movement data stored in the EyeLink EDF data files. We then show how to convert EyeLink EDF files into plain text files and then extract sample and eye events. For data visualization, this chapter will briefly discuss gaze trace, scanpath, heatmap, and interest area-based plotting techniques.
This is a preview of subscription content, log in via an institution to check access.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Notes
- 1.
https://github.com/smathot/python-eyelinkparser
- 2.
https://ihrke.github.io/pypillometry/html/index.html
- 3.
To keep the script simple, we stop looking for the EFIX event when encountering the “image_offset” message. So, the script may omit the last fixation if it overlaps with this message.
- 4.
https://pandas.pydata.org/
- 5.
https://docs.python.org/3/library/re.html
- 6.
https://matplotlib.org/
- 7.
- 8.
- 9.
- 10.
- 11.
References
N.C. Anderson, F. Anderson, A. Kingstone, W.F. Bischof, A comparison of scanpath comparison methods. Behav. Res. Methods 47(4), 1377–1392 (2015). https://doi.org/10.3758/s13428-014-0550-3
T. Blascheck, K. Kurzhals, M. Raschke, M. Burch, D. Weiskopf, T. Ertl, Visualization of eye tracking data: A taxonomy and survey. Comput. Graphics Forum 36(8), 260–284 (2017). https://doi.org/10.1111/cgf.13079
A. Bojko, Informative or misleading? Heatmaps deconstructed, in Human-Computer Interaction. New Trends, ed. by J. A. Jacko, (Springer, Berlin\Heidelberg, 2009), pp. 30–39
Z.M. Griffin, K. Bock, What the eyes say about speaking. Psychol. Sci. 11(4), 274–279 (2000). https://doi.org/10.1111/1467-9280.00255
R.S. Hessels, D.C. Niehorster, M. Nyström, R. Andersson, I.T.C. Hooge, Is the eye-movement field confused about fixations and saccades? A survey among 124 researchers. R. Soc. Open Sci. 5(8), 180502 (2018). https://doi.org/10.1098/rsos.180502
D.D. Salvucci, J.H. Goldberg, Identifying fixations and saccades in eye-tracking protocols, in Proceedings of the symposium on eye tracking research & applications, pp. 71–78. (2000). https://doi.org/10.1145/355017.355028
Author information
Authors and Affiliations
Rights and permissions
Copyright information
© 2021 The Author(s), under exclusive license to Springer Nature Switzerland AG
About this chapter
Cite this chapter
Wang, Z. (2021). Eye Movement Data Analysis and Visualization. In: Eye-Tracking with Python and Pylink. Springer, Cham. https://doi.org/10.1007/978-3-030-82635-2_8
Download citation
DOI: https://doi.org/10.1007/978-3-030-82635-2_8
Published:
Publisher Name: Springer, Cham
Print ISBN: 978-3-030-82634-5
Online ISBN: 978-3-030-82635-2
eBook Packages: Behavioral Science and PsychologyBehavioral Science and Psychology (R0)