[open] Tobii EyeTracker TX300 PyGaze

aklingau

Hello everybody,

I tried to make the Tobii EyeTracker TX300 work with Open Sesame but I have some problems. Perhaps you can help me. When I use a pygaze_init I receive this error:

Unexpected error
line: 55
exception message: No module named tobii.eye_tracking_io.basic
exception type: ImportError

Traceback (also in debug window):
File "dist\libqtopensesame\misc\process.py", line 139, in run
File "dist\libopensesame\experiment.py", line 344, in run
File "dist\libopensesame\sequence.py", line 47, in run
File "C:\Program Files (x86)\OpenSesame\plugins\pygaze_init\pygaze_init.py", line 198, in run
File "dist\pygaze\eyetracker.py", line 86, in init
File "dist\pygaze_eyetracker\libtobii.py", line 55, in
ImportError: No module named tobii.eye_tracking_io.basic

I worked with EPrime before and just started to use Open Sesame, so I am kind of a beginner.

Thank you for your help in advance
Anna

Edwin

Hi Anna,

The error you receive is due to the fact that we did not include the Tobii SDK in the standalone OpenSesame package. You could opt for downloading the portable package, which does include the Tobii SDK.

See under WinPython on this page

Good luck!

aklingau

Hi Edwin,

thank you for your help!
But I am a little confused. If I download the portable package, there is no pygaze plugin at all.
I found the basic.py file in the tobii.eye_tracking_io folder (under python, how confusing!) and tried to copy it to the right location (/pygaze/_eyetraker) but that did not work either. Open Sesame still gives the same error. Perhaps I copied it to the wrong location or the whole idea was stupid.

So, what did I do wrong?

Edwin

There should be two packages, pygaze and tobii. These should be two separate folders in WinPython-OpenSesame-0.27.3\python-2.7.3\Lib\site-packages. If this is the case, you do not have to copy anything anywhere.

If you find anything else, please report back, and we will sort out where to go from there.

aklingau

This is the case.
I was confused that I do not have the pygaze plugin when I start the portable version (means: no pygaze items for drag and drop).
But now I think you mean I have to use Inline Scripts and then it should work? Is that right?
Sorry for my stupid questions, I am a beginner.

Edwin

Ah, all right, that's very good! This means all of the basic libraries are there. Note that these are Python libraries, which are written in the same programming language as OpenSesame is. We use Python to run OpenSesame, which is why you need to have those libraries in Python.

However, the plug-ins are specific to OpenSesame. So if you want to use the PyGaze plug-ins, you will have to add those to OpenSesame's plugins folder. In the WinPython package, you can find it at the following location:

WinPython-OpenSesame-2.8.3\OpenSesame\opensesame-2.8.3\plugins

You can find the PyGaze plug-ins online (click here to download). After downloading, unzip the archive. Then copy the contents of opensesame_plugins to the OpenSesame plug-ins folder. NOTE: you do not have to copy the folder artwork, but you will need all of the others.

Additionally, OpenSesame does indeed allow you to use Python directly, via inline_script items. This means you can use PyGaze directly via those. However, the plug-ins provide roughly the same functionality and are easier to use. Since you mention you are a beginner, I would advise using the plug-ins first.

Good luck!

aklingau

Thank you very much for your help!
The plugin kind of works and the old error is gone. Instead, I have a new error

Unexpected error
line: 6
exception message: DLL load failed: %1 ist keine zulssige Win32-Anwendung.
exception type: ImportError

Traceback (also in debug window):
  File "C:\Users\ewadmin\Downloads\WinPython-OpenSesame-2.8.3\OpenSesame\opensesame-2.8.3\libqtopensesame\misc\process.py", line 139, in run
    exp.run()
  File "C:\Users\ewadmin\Downloads\WinPython-OpenSesame-2.8.3\OpenSesame\opensesame-2.8.3\libopensesame\experiment.py", line 294, in run
    self.items[self.start].run()
  File "C:\Users\ewadmin\Downloads\WinPython-OpenSesame-2.8.3\OpenSesame\opensesame-2.8.3\libopensesame\sequence.py", line 57, in run
    self.experiment.items[item].run()
  File "C:\Users\ewadmin\Downloads\WinPython-OpenSesame-2.8.3\OpenSesame\opensesame-2.8.3\plugins\pygaze_init\pygaze_init.py", line 198, in run
    u'eyelink_pupil_size_mode'))
  File "C:\Users\ewadmin\Downloads\WinPython-OpenSesame-2.8.3\python-2.7.3\lib\site-packages\pygaze\eyetracker.py", line 86, in __init__
    from pygaze._eyetracker.libtobii import TobiiTracker
  File "C:\Users\ewadmin\Downloads\WinPython-OpenSesame-2.8.3\python-2.7.3\lib\site-packages\pygaze\_eyetracker\libtobii.py", line 55, in <module>
    from tobii.eye_tracking_io.basic import EyetrackerException
  File "C:\Users\ewadmin\Downloads\WinPython-OpenSesame-2.8.3\python-2.7.3\lib\site-packages\tobii\eye_tracking_io\__init__.py", line 5, in <module>
    from tobii.eye_tracking_io._native import tetio, BoundHandler
  File "C:\Users\ewadmin\Downloads\WinPython-OpenSesame-2.8.3\python-2.7.3\lib\site-packages\tobii\eye_tracking_io\_native\__init__.py", line 6, in <module>
    import _tetiopy27
ImportError: DLL load failed: %1 ist keine zulssige Win32-Anwendung.

Edwin

Thanks for posting the full error!

Two comments, which aren't very optimistic, I'm afraid:

1) The problem seems to be in a Tobii library, where a wildcard isn't filled out with the proper value. This seems to lead to the library not being able to find a library it's looking to import.

2) The problem is in the Tobii library, and I don't have a Tobii device around, so I can't debug it.

I'll have a look around the Dept., maybe I can find a Tobii somewhere and test the plug-ins.