Howdy, Stranger!

It looks like you're new here. If you want to get involved, click one of these buttons!

Supported by

Data file ends with comma instead of square bracket

Hi,

I have runed some task online with JATOS built with OSweb.

All data from 'FINISHED' runs ends with a comma instead of closing the square bracket that is the first symbol in the file.

For example:

[{"ID":" ... "width":1024},

If I change the last comma to a square bracket I can parse the file as a json.

I have a logger at the end of a loop block set to log all variables.

Dose any one know why my data files are like this?

Comments

  • Hi, that sounds more like an OpenSesame/OSWeb issue. JATOS just stores whatever text it gets in the database or file system. I will move your question in their category.

    Best,

    Kristian

  • Thanks kri!

    I should add that this is on OSweb 2.0.1.0 and I have not tested this on the latest OSweb.

  • Hi @sebastiaan, do you know whats is happening here?

  • @SpacePenguins OSWeb incrementally logs data during the experiment, in which case it has the kind of incomplete JSON format that you are describing. This is to make sure that not all data is lost when the experiment doesn't finish. However, when the experiment does finish, all data is sent again, overwriting the incomplete JSON with a valid JSON object that also includes some context information (about the browser etc.).

    In your case this last step apparently doesn't happen, and I'm not sure why. One thing that comes to mind is that you explicitly end the JATOS session in an inline_javascript item, thus bypassing the final data transfer that OSWeb normally does. Could that be it?

  • @sebastiaan Thank you, this is correct. I have a javascript that ends the study in jatos and redirect to a nother url.

    jatos.endStudyAndRedirect(url);

    Is there another way of doing this and get a complete data file?

  • Is there another way of doing this and get a complete data file?

    @SpacePenguins Not really, but it may not be necessary.

    In principle, you have all the data, even if the JSON is invalid. The only thing that is missing is "context" information, which refers to browser information etc. In many cases, this information is not of interest anyway, and if it is you could explicitly get this information in the experiment and assign it to variables so that it will be logged as a regular variables.

    Alternatively, you can use the regular end-redirect URL as specified in OSWeb/ JATOS. The only reason not to use this that I can think of is when you flexibly determine the URL in a script during the experiment.

  • The only reason not to use this that I can think of is when you flexibly determine the URL in a script during the experiment.

    @sebastiaan This is what I'm doing. Participant first fill in a questionnaire in REDCap, then get a link to one of the tasks, the link includes a URL query parameter with a unique URL that i fetch with:

    vars.url = jatos.urlQueryParameters.url;
    

    And then use as argument in:

    jatos.endStudyAndRedirect(url);
    
  • JATOS actually has a mechanism for this. You can include references to URL parameters that the task was started with in the end-redirect URL using [this_notation] :

  • Thanks sebastiaan! I missed that I could use variables in the End Redirect URL filed.

Sign In or Register to comment.

agen judi bola , sportbook, casino, togel, number game, singapore, tangkas, basket, slot, poker, dominoqq, agen bola. Semua permainan bisa dimainkan hanya dengan 1 ID. minimal deposit 50.000 ,- bonus cashback hingga 10% , diskon togel hingga 66% bisa bermain di android dan IOS kapanpun dan dimana pun. poker , bandarq , aduq, domino qq , dominobet. Semua permainan bisa dimainkan hanya dengan 1 ID. minimal deposit 10.000 ,- bonus turnover 0.5% dan bonus referral 20%. Bonus - bonus yang dihadirkan bisa terbilang cukup tinggi dan memuaskan, anda hanya perlu memasang pada situs yang memberikan bursa pasaran terbaik yaitu http://45.77.173.118/ Bola168. Situs penyedia segala jenis permainan poker online kini semakin banyak ditemukan di Internet, salah satunya TahunQQ merupakan situs Agen Judi Domino66 Dan BandarQ Terpercaya yang mampu memberikan banyak provit bagi bettornya. Permainan Yang Di Sediakan Dewi365 Juga sangat banyak Dan menarik dan Peluang untuk memenangkan Taruhan Judi online ini juga sangat mudah . Mainkan Segera Taruhan Sportbook anda bersama Agen Judi Bola Bersama Dewi365 Kemenangan Anda Berapa pun akan Terbayarkan. Tersedia 9 macam permainan seru yang bisa kamu mainkan hanya di dalam 1 ID saja. Permainan seru yang tersedia seperti Poker, Domino QQ Dan juga BandarQ Online. Semuanya tersedia lengkap hanya di ABGQQ. Situs ABGQQ sangat mudah dimenangkan, kamu juga akan mendapatkan mega bonus dan setiap pemain berhak mendapatkan cashback mingguan. ABGQQ juga telah diakui sebagai Bandar Domino Online yang menjamin sistem FAIR PLAY disetiap permainan yang bisa dimainkan dengan deposit minimal hanya Rp.25.000. DEWI365 adalah Bandar Judi Bola Terpercaya & resmi dan terpercaya di indonesia. Situs judi bola ini menyediakan fasilitas bagi anda untuk dapat bermain memainkan permainan judi bola. Didalam situs ini memiliki berbagai permainan taruhan bola terlengkap seperti Sbobet, yang membuat DEWI365 menjadi situs judi bola terbaik dan terpercaya di Indonesia. Tentunya sebagai situs yang bertugas sebagai Bandar Poker Online pastinya akan berusaha untuk menjaga semua informasi dan keamanan yang terdapat di POKERQQ13. Kotakqq adalah situs Judi Poker Online Terpercayayang menyediakan 9 jenis permainan sakong online, dominoqq, domino99, bandarq, bandar ceme, aduq, poker online, bandar poker, balak66, perang baccarat, dan capsa susun. Dengan minimal deposit withdraw 15.000 Anda sudah bisa memainkan semua permaina pkv games di situs kami. Jackpot besar,Win rate tinggi, Fair play, PKV Games