The horizontal screen coordinate of the most recent gaze point of the left eye reported by the eye tracker.
<eyetracker> <eyetracker> <eyetracker>
This property allows a script to read the horizontal position in pixels of the gaze point for purposes of recording data, reporting feedback to participants, or directing the flow of a task or visual display.
The following displays the value of lastleftx in a text stimulus:
<text sometext>
/ items= ("height = <% eyetracker.lastleftx %>")
</text>