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Webgazer not working

Hello, I just downloaded the latest version of OpenSesame (4.0), and wanted to try the sample experiment for Webgazer integration found here: https://osdoc.cogsci.nl/3.3/manual/eyetracking/webgazer/

The sample already hosted on https://jatos.mindprobe.eu/publix/BowSAFY2VWl seems to work fine so I downloaded the actual experimental file from here https://osdoc.cogsci.nl/3.3/attachments/webgazer.osexp

and added the link to the Webgazer library as shown in the instructions


and set the experiment to run in the browser using OSWeb

However, when I run it I end up getting an error that seems to indicate that the Webgazer library isnt actually being loaded:

So am I just missing some step in the setup, or is this a bug?

Also, I noticed that the addition of the link to the Webgazer library and the setting for running the experiment in the browser dont actually get saved from session to session when I save the experimental file, and need to be set every time I start OpenSesame.


Thanks in advance for any help!

Comments

  • Hi,

    Not an expert here, but I suppose this is a conflict of versions. That experiment was written for 3.3, and apparently does not work with Opensesame 4.0. Why this is I don't know, but potentially to do with any of the backwards incompatible changes:

    Eduard

    Buy Me A Coffee

  • edited September 2023

    Hi Eduard, you were right!

    I switched back to 3.3, and the experiment worked. However, this begs the question of how to integrate Webgazer into experiments made in version 4 and later, since the way of doing it in 3.3 (specifically, linking external libraries) isn't working anymore?

  • Hi,

    Yeah, that's a valid point. OS4 was released before everything (plugins, tutorials, etc) that you can find on the web was updated to 4.0, mostly for practical reasons. In the case of webgazer, I don't know whether the support as intentionally dropped, or just removed temporarily until someone made changes to it to make it work with the latest version of OS4. Maybe @sebastiaan knows?

    So for now, you can either stick with 3.3 and see what the future might bring, or you can to speed up the process, maybe even contribute some code yourself.

    Eduard

    Buy Me A Coffee

  • Hi @veskerm and @eduard ,

    There indeed appears to be an issue with including external libraries, such as webgazer.js, in OSWeb 2.0. I don't know what causes it right now, but it's on the radar and should be fixed soon in an update. (I suspect it's a minor issue that slipped through the cracks.)

    — Sebastiaan

    Buy Me A Coffee

  • @sebastiaan


    Thats great to hear! So does this mean that it should be safe to start building my experiment in OS 4 without Webgazer for now, and then at some point when the external library issue is resolved I could simply add Webgazer to the complete experiment?

  • @veskerm Yes, although I can of course not offer guarantees, that's what I would do. I intend to release a minor bugfix update next week. This should appear through the automatic updater.

    Buy Me A Coffee

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