Two calibration routines in the same experiment do not work

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1

If this template helps then use it. If not then just delete and start from scratch.

OS (e.g. Win10): Win10
PsychoPy version : 2021.1
Standard Standalone? (y/n) yes
What are you trying to achieve?:
I’m trying to create a experiment where the Eye-Tracker is calibrated two times. Once at the beginning and once after a break in which the participants can leave the experiment room.

What did you try to make it work?:
I created a new Experiment with solely two Calibration Routines (with the same name and different names) and the second calibration was not initiated.

What specifically went wrong when you tried that?:
The second calibration routine is skipped and the Experiment continues.
At the end the following error code appears in the runner:

“Unable to use new EyeLinkCustomDisplay when a previous EyeLinkCustomDisplay is active. Call closeGraphics() before calling openGraphicsEx()”

2

Hi @M1A3N0U4,

Thanks for your post.

Could you please try inserting a code component at the beginning of the break routine with the code suggested in the error message:

closeGraphics()

Then see if your second calibration routine will work?

Thanks,

Kim

4

Dear Kim,
Thanks for your response!
Adding closeGraphics() in a custom code component before attempting to calibrate again did not work. PsychoPy still raises RuntimeError(“Unable to use new EyeLinkCustomDisplay when a previous EyeLinkCustomDisplay is active. Call closeGraphics() before calling openGraphicsEx()”).

Apparently, PsychoPy is attempting to open a new Eyelink Window ( openGraphicsEx(eyeCustomDisplay) for calibration) when calling calibration.run() , yet the Window from the former calibration is never closed, so calibration.run() is skipped and openGraphicsEx(eyeCustomDisplay) raises the Error.

Adding closeGraphics() in the eyelink.py module in Pylink (Program Files\PsychoPy\Lib\site-packages\pylink) worked:

def openGraphicsEx(eyeCustomDisplay):

global customGraphics

if pylinkcg:

raise RuntimeError("Unable to use EyeLinkCustomDisplay when Core Graphics is active. Call closeGraphics() before calling openGraphicsEx()")

if customGraphics:

#raise RuntimeError("Unable to use new EyeLinkCustomDisplay when a previous EyeLinkCustomDisplay is active. Call closeGraphics() before calling openGraphicsEx()")

closeGraphics()

if(isinstance(eyeCustomDisplay,EyeLinkCustomDisplay)):

rv = openCustomGraphicsInternal(eyeCustomDisplay)

customGraphics=eyeCustomDisplay

return rv

else:

raise RuntimeError("Expecting object of type EyeLinkCustomDisplay got "+ eyeCustomDisplay.__class__.__name__)
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