Pupil player - Add plugin to view gaze dynamics (e.g. position/velocity/acceleration)

[gabrielDiaz-performlab]

It would be great to see a timeline with an indicator of the current position. Vary valuable for fixation detection and determining the gaze event (eg. fixation/saccade), and also helpful when trying to find a period of fixation during the process of calibration via natural features.

This could be added as a transparent overlay. If someone implements this, it would be important that one can manipulate the axes ranges around the current time.

[papr]

Timelines can easily be integrated using the pyglui.ui.Timeline class. The offline calibration uses the same class. This is a quite recent feature and the ui is not that flexible yet that one can manipulate axes ranges etc. But this is planned for the mid/long term future. For now it is only possible to see Timelines for the complete recording.

[papr]

I started implementing timelines to display different metrics: https://github.com/pupil-labs/pupil/compare/master...papr:metric_timelines?expand=1

Unfortunately, they are not isolated examples but I hope they help as a reference. :)

[gabrielDiaz-performlab]

Thanks, Pablo. I'm just beginning to develop familiarity with the source, so perhaps I'll tackle this one at some point.

---

Gabriel J. Diaz, Ph.D. Assistant Professor Rochester Institute of Technology Chester F. Carlson Center for Imaging Science

Founder of PerForM Labs Click for demos. https://www.cis.rit.edu/performlab/

Office 2108, Building #76 Rochester, NY 14623 Office: (585) 475-6215 gabriel.diaz@rit.edu

On Tue, Jan 9, 2018 at 10:33 AM, Pablo Prietz notifications@github.com wrote:

I started implementing timelines to display different metrics: https://github.com/pupil-labs/pupil/compare/master...papr: metric_timelines?expand=1

Unfortunately, they are not isolated examples but I hope they help as a reference. :)

— You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub https://github.com/pupil-labs/pupil/issues/1001#issuecomment-356318773, or mute the thread https://github.com/notifications/unsubscribe-auth/AIi_2ya2ES9Gruq4K3NTHwq6ng1nKws2ks5tI4bfgaJpZM4RTP4q .

[gabrielDiaz-performlab]

Ok, lets say I've created a function that calculates velocity of the cyclopean gaze vector from t-0.25seconds through t+0.25 seconds. ( I want to show the current velocity, plus the velocity a bit into the future). I'm using graph.Line_Graph() to plot.

• How do I pass the data into the line graph?
• How can I draw a vertical line extending the Y range to indicate the current time (which should usually be in the middle of the plot).

[gabrielDiaz-performlab]

I think this requires that more flexibility is added to the pyglui graph.Line_graph() class. I've opened a new pyglui issue to move this along. https://github.com/pupil-labs/pyglui/issues/89

[gabrielDiaz-performlab]

I have implemented a timeline. The solution, however, has been held up by this related issue: https://github.com/pupil-labs/pupil/issues/1018