[solved] Referring only to one column of a loop

Comments

• eduard

  March 2015 edited 3:02PM

  Hi Tali,

  every loop item has a break ifargument. There you can add something like: [count_nested_loop] >0.

  OpenSesame has built in variables that count how often each item was called. If I remember right, the general shape is "count_NameOfItem", you can check the it in your logger.
  Does this help?

  Good luck,

  Eduard

  
• labovich

  March 2015 edited 3:02PM

  Hi Eduard

  Thank you for your help!
  I tried what you suggested: in my nested practice loop (in break if)
  I wrote:[count_Nested_practice] >0
  Now, I get only 2 trials (the picture that was chosen from the nested and the picture from the column to the right), and then the practice ends...
  What am I doing wrong?

  Thanks again!

  Tali
• eduard

  March 2015 edited 3:02PM

  Mh, I'm not sure about the exact sequence, in which these variables are written. I suppose if this happens in the end of an iteration, the first loop is 0th trial, so, the next trial will start, too. Now, the counter reaches 1, corresponding to the 2nd trial, so that no more trials are started.
  Anyway, the exact reasoning is not really important here, just set [count_Nested_practice] =0 and you should be fine ( I hope).

  Eduard

  
• labovich

  March 2015 edited 3:02PM

  Hello again (-:

  I tried this too, and it doesn't get out of the practice after 2 trials,
  but with or without "break if" I get the same result:
  The nested loop is sampled twice (from tasted columns) and only then returns to the main list...

  Here is the experiment if you want to see how it looks...
  https://www.dropbox.com/s/jpr9b0fesefyk83/Ordinalitysymbolic.opensesame?dl=0

  Thank you!
  Tali
• Josh

  March 2015 edited 3:02PM

  Hi Tali,

  In case you can't work around this problem, you could also simply put all the picture names in a list, and then use random.shuffle(list) and list.pop[0] to take one picture every time you go through your main loop.

  Good luck!

  Cheers,
  Josh
• labovich

  March 2015 edited 3:02PM

  Hi Josh

  Thank you for your suggestion!
  The problem is that I will have to create 32 different lists and use shuffle for each one of them... and while doing it I can make mistakes... That's why I preferred to use loops
• eduard

  April 2015 edited 3:02PM

  Hi Tali,

  If the strategy with using the built-in counters doesn't work, you can always create your own counters and make sure that they do work. So, in the beginning of your experiment (or in the outer loop), you set a trial_counter to 0. Later, when you're in the nested_loop, you can increment it to 1 or break it right away. This you should do from within an inline_script. Alternatively, you can also leave the loop item untouched and add this breakstatement as last element in the nested sequence. In doing so, it will also not run more than once.
  Do you understand what I mean?

  Btw. I think, you have a few nested sequences too much in your experiment. Maybe you should check, whether you can remove some of them to make the experiment less complicated.

  Good luck,

  Eduard

  
• labovich

  April 2015 edited 3:02PM

  Thank you Eduard! I'll try that!
• labovich

  May 2015 edited 3:02PM

  Hi!

  With the help of Yoni Melman we found a way to have a
  nested that is very similar to that of E-prime:

  In this example, in the main loop we wanted to define the font size as a variable.
  So we wrote the name of the variable within []:
  

  Then, the nested table will have a column by that name:
  

  To allow font size to change as variable, in the "Target" sketchpad we edit the script so the font size will be the variable [Fs]:
  

  (This is only an example, but it is possible to use more columns for more variables)

  Some steps to make sure that the nested loop will only be sampled once:

  1. This is how the structure suppose to look like:

  

  2. In the "run" section of "flag_down" write:
     self.experiment.set("flag",0)

  3. in the "run" section of "flag_up" write:
     self.experiment.set("flag",1)

  4. in the "nested-loop", check "show advanced options" (see picture above) and under "break if" write: [flag]=1

  Here is a link to the file:
  https://www.dropbox.com/s/wvenrkre52tmtpq/nested.opensesame?dl=0
• eduard

  May 2015 edited 3:02PM

  Hi Tali,

  Thanks for sharing!

  Eduard

  
• kolfers

  December 2021

  Hi all,

  I noticed that some of the images in this discussion appear to be gone. Is there any way to retrieve them, as I'm very interested in the solution Tali proposed.

  Kind regards,

  
  

  Kerwin
• sebastiaan

  December 2021

  Hi @kolfers ,

  Unfortunately not 😕 Some images (and attachments) got permanently lost in some server issues some time ago. Unless, of course @labovich still has them.

  — Sebastiaan

  
  
  Check out SigmundAI.eu for our OpenSesame AI assistant!