I have recorded gaze data using Psychopy/iohub and a Tobii TX300 eye tracker. Loading the hdf5 file shows the following entries in a BinocularEyeSampleEvent:
['experiment_id', 'session_id', 'device_id', 'event_id', 'type', 'device_time', 'logged_time', 'time', 'confidence_interval', 'delay', 'filter_id', 'left_gaze_x', 'left_gaze_y', 'left_gaze_z', 'left_eye_cam_x', 'left_eye_cam_y', 'left_eye_cam_z', 'left_angle_x', 'left_angle_y', 'left_raw_x', 'left_raw_y', 'left_pupil_measure1', 'left_pupil_measure1_type', 'left_pupil_measure2', 'left_pupil_measure2_type', 'left_ppd_x', 'left_ppd_y', 'left_velocity_x', 'left_velocity_y', 'left_velocity_xy' 'right_gaze_x', 'right_gaze_y', 'right_gaze_z', 'right_eye_cam_x', 'right_eye_cam_y', 'right_eye_cam_z', 'right_angle_x', 'right_angle_y', 'right_raw_x', 'right_raw_y', 'right_pupil_measure1', 'right_pupil_measure1_type', 'right_pupil_measure2', 'right_pupil_measure2_type', 'right_ppd_x', 'right_ppd_y', 'right_velocity_x', 'right_velocity_y', 'right_velocity_xy', 'status']
They are different from those described in the official documentation, so where can I find an accurate description of what the data means? For instance, what is PPD, what does a measure type '77' mean or what unit was the velocity measured in? Is there an up-to-date documentation somehwere? ...and, maybe most importantly, which of the entries represent the point of gaze on the screen (taking the calibration into account)?
