kri
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Hi Sid, This Entity Stream Truncation error is an infamous one indicating that something interrupted the arriving data stream, likely the sending of result data that are partially missing. The causes for this can be manifold, e.g. network problems, …
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Hi Tim! That's great to hear! And about your other question: 'is there a way to initialize JATOS (i.e. load the variables) before the HTML is loaded (e.g. to dynamically create content)?'. I don't think that is possible since jatos.js loads data asy…
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Hi Tim! Try putting the logging within the onLoad function too, like: <script type="text/javascript"> jatos.onLoad(function() { var accuracy = jatos.studySessionData.accuracy; console.log(accuracy); }); </script> Th…
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Hi Tim! Could it be that OSWeb somehow doesn't transfer the studySessionData, i.e. "ends" the session? This is handled by jatos.js. So OSWeb can't 'end' the session. Maybe there are problems with starting the last component of yours. How d…
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Ah, so JATOS or the server where JATOS runs on crashed. Again it sounds like the server doesn't have enough resources, most likely memory. How much memory does it have? Best, Kristian
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Hi Tim, It looks like you forgot to initialize jatos.js. Have a look in http://www.jatos.org/Write-your-own-Study-Basics-and-Beyond.html#mandatory-lines-in-your-components-html. Basically before you can start with using features from jatos.js (like …
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Hi Tim, As far as I understand your experiment has 3 components, one survey, one OSWeb and one 'last' component. Actually the code to get your data from the study session in the third component is just var accuracy = jatos.studySessionData.accuracy…
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Hi Ely! HTTP error code 503 means "Service Unavailable". This can have many reasons but my first guess is that somehow your JATOS server was not working at the time. Is it possible that it was overloaded (too many requests at the same time…
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Hi Zach, An alternative way is to edit the .jas file that is within your experiment .zip file. Unzip your experiment (that you got from OpenSesame) Open the .jas file with an editor Change the value of the uuid field to the desired value Zip the fol…
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Sounds more like an OSWeb or browser issue - not so much JATOS.
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Hi Marta, You could also try to catch errors in your participant's browsers and write them into the JATOS log. Just put jatos.catchAndLogErrors(); somewhere in the beginning of your JavaScript, e.g. in jatos.onload. Maybe there is an error that he…
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At least the missing '.txt' file suffix is a JATOS issue ;) In Firefox JATOS doesn't put the ending '.txt' to result files. In Chrome, Edge and Safari it works fine. This is already fixed in the upcoming JATOS release. In between you can just rename…
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Hi Elena, As I unterstood it, I need to get the paramterer somehow (as described above using jatos.urlQueryParameters.paramA). But do I also need to implement something to then add the unique parameter value to the URL as well? Would I use the funct…
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Hi Kian, The updated result pagination changes are currently mixed in together with other stuff that not yet ready for release. But as soon as I extracted the result pagination changes I'll prepare a release and let you know. But the current Corona …
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Hi! I agree with Elisa and just want to answer concretely to your questions if the participant responses are stored in cookies: the participant's responses (in JATOS they are called result data) are stored in a database on the JATOS server. They can…
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Hi Maryam, I see you already solved the problem by moving to a different computer. Anyway the first 2 error messages indicate that the problem is on the 'client side' and that it has nothing to do with JATOS. I can see in the earlier posts that Elis…
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Hi Maryam, In order to help you we'd need more information about the problem: What is the error message your participants get? If you open your browser's developers tool console do you see more error messages? Does the problem happens only in certai…
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Hi Kian, Sorry for the late reply - some holidays came in the way. For a study that we have with 871 participants, the data size we are getting from the table ComponentResult is only 522 MB (we are only using the ComponentResult because this is wher…
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I'm sorry to hear you had to download your data directly from the database. This is annoying and JATOS is intended to make this unnecessary. May I ask how big your result dataset is expected to be altogether? I'm asking because there is an addition…
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It's mysterious :). I'm looking forward to any news.
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Hm. Strange, from what you describe, ' they could start the study and complete all the elements and the error appeared at the end only (bad request), after they tried to submit their data (after around 45 min)', the only error matching this behavior…
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Ah, I guess on your local computer where it worked fine you have Windows which is case insensitive when it comes to paths. And on your remote JATOS server you probably have some kind of Linux which is case sensitive and didn't accept your path. Nice…
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Hi Jonah! This issue is about browser-side and therefore belongs in the OSWeb forum. JATOS manages the server side. I moved it into OSWeb. Hope you find a solution! Best, Kristian
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Hi Yvonne! Great you managed to get the logs. And great you put the way you did it here so others can profit from it. I had a look at your logs. Lets start with the easy things: There is no indication that your server had problems. E.g. there are no…
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Hi Kian, I've seen this before. I guess it has to do with your MySQL database setup. By default it limits the amount of data that can be loaded at once. JATOS' docs has a chapter about it: http://www.jatos.org/JATOS-with-MySQL.html#optional-increase…
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Hi! It looks like you have a problem with your paths. Can you send me your study and I'll have a look?. If you don't want to post it to everyone here just send it to me personally. But you can't attach the jzip file here in this forum - you have to …
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Hi Jelle! My first guess is that you university's JATOS server is out of disk space. Can you contact your admins and ask them this? Best, Kristian
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Hi Chris! Strange it works with me. I just tried. And I didn't change anything there. Can you try with another browser and/or delete the cookies for https://experiments.jatos.org/ in your browser? Best, Kristian
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It seems like you expect your study to be used by others and you try to anticipate where they would set input parameters. Usually people program a study for themselves or their team and don't try to make it fool-proof - they just try to get it to wo…
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Hi Craig! Nice to hear you like JATOS. And thank you for your feedback and feature wishes. We really need this type of feedback to learn what people need in JATOS. Now to your main wish: exporting meta data. JATOS does have the possibility to export…