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Group: Administrators
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Hi Ben,
Thanks for sending the data files and script, and apologies for the slow reply.
I've done some testing and confirmed that Inquisit is correctly reporting the values returned from the eye tracker. It appears not all models return all possible data points. The X3-120, for example, returns 0 for the "user coordinates" of right eye gaze points, similar to your Nano. Likewise, it returns 0 for the "user coordinates" of the right eye position. According to the Tobii docs, these data represent the position of the gaze point and the eyes in 3D space relative to the eye tracker itself. I'm not sure what the practical value of this data is. By default, we report everything in the data file, but you can define the specific fields you'd like to record to filter out irrelevant info.
Typically, you want to know where on the display screen the participant is looking, which is reported via the 2D pixel coordinates of the gaze point: rightpixelx, rightpixely, leftpixelx, leftpixely. Judging from your data file, your Nano is reporting all of these values.
If you need the user coordinates, however, you can use the values from the left eye.
-Sean
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