I am creating eye-tracking experiment using gazepoint GP3 thanks to psychopy!
And now, I am trying to interpret data after finishing the pilot experiment.
In order to understand what columns mean, I read an article from https://psychopy.org/api/iohub/device/eyetracker_interface/Gaze.Point_Implementation_Notes.html.
But there are many more columns not listed on that page, like ‘type’ and ‘left_pupil_measure_2’.
And I don’t know the meaning of specific properties in ‘event_id’, ‘type’, and ‘left_upil_measure2_type’.
Are there articles or explanations about what meaning of each column and properties in the hdf5 file?
Thank you in advance!!
@jgeller112 (hope I have your username correct and don’t mind me roping you in here!) I think you might be familiar with gazepoint with the new eyetracking components is that correct?
So looking into the source code of the PsychoPy implantation modifies some of the standard GazePoint columns. The source code is not well documented but I think measure 1 is diameter in pixels and measure 2 is diameter in mm.
I have no clue what type refers to here. Are those the only two values type can take?
Thank you for your reply!!
I found what pupil_measure2_type is from Pupil Labs - Core — PsychoPy v2022.1.2.
And it is diameter in mm as you said.
I uploaded an image to show what ‘type’ is.
The value was different depending on which file I opened.
For example, the type value was ‘54’ when I opened ‘FixationEndEvent’
and the value was ‘53’ when I opened ‘FixationStartEvent’.
And I have one more question!
Can I know how fixation event is defined??
Thanks again your attention!