[solved] Screen with buttons that can be pressed

Comments

• eduard

  December 2015 edited 11:47AM

  Hi FLorian,

  I'm sorry, but the solution is again rather easy (at least I think so).

  So far I know, widgets can only be used in forms. Therefore, you can't just add it to a sketchpad and expect it to work. You have to use some form (like the base_form) and paste it there. If you have a look on the form documentation things should get clear rather quickly.

  Eduard

  
• Knante

  December 2015 edited December 2015

  Hi Florian,

  Edit: i'm rather slow, so Eduard already answered most of it

  The widget functions only work with form items, not on the sketchpad items. It took me a while to figure that out as well.

  For your second question: i think that the image_button functions work similar to the touch response items in which a raster is created by setting the amount of columns and rows. So you could set the amount of squares directly in the form item by adjusting the rows and columns there:

  set rows "2;2"
  set margins "50;50;50;50"
  set cols "2;2"
  

  Then you can place your image button widget at the desired rectangle and collect the variable response you defined in the widget. The variable will be set to "yes" once the participant clicks anywhere in that area of the raster, so make sure the image 'fits' the rectangle.

  Laurent
• flo

  December 2015 edited December 2015

  Hi,

  @eduard: as you can see, I am still wrapping my head around the very basic concepts here. Thank you for your patients (hahahahah, sorry, I was very tried ) patience.

  Thank you both for the information. The documentation for the forms got me a lot further. I now used a form_base item, created the appropriate number of row and column, populated those with button widgets and changed the text accordingly.

  Now on to the next problem: How do I figure out which button was pressed? All my buttons are created using this format:

  widget 0 0 1 1 button var="response" text="button 1"
  widget 0 1 1 1 button var="response" text="button 2"
  

  I'll have to place an inline_script after the form to do several checks based on which buttons were pressed. However, when checking the content of response, I always get "yes", no matter which button was pressed:

  print exp.get('response')
  

  (This is also the case if I use a feedback item and display the text "response: [response]" - it is always "yes".

  I want to record record the time stamp of the click and have to know which button was clicked.

  Thank you for your time, guys!

  • Florian
• flo

  December 2015 edited 11:47AM

  Argh. I kept playing around and then realized that this works:

  In form_base:

  widget 0 0 1 1 button var="response" text="button 1"
  widget 0 1 1 1 button var="response2" text="button 2"
  

  In inline_script:

  print exp.get('response') + " and " + exp.get('response2')
  

  This prints "yes and no" when I press "button 1" and vice versa.

  This wouldn't be so bad if I only had two buttons. But I have 30+. I don't want to chain together 30+ if-statements to figure out which button was pressed. Is there a smarter way of doing this?

  • Florian
• eduard

  December 2015 edited 11:47AM

  Hi,

  maybe the multiple_choice_form is something for you? I couldn't find a documentation about this plug-in, but if you open opensesame you can add the item to your experiment and play around with it (it's the small green box with "a)" and "b)" written in it.

  Eduard

  
• flo

  December 2015 edited 11:47AM

  Hi Eduard,

  this was my first idea as well and I played around with it. But there are too many options and it's not quite what I need.

  If there's a better solution, I'd love to hear about it. Until then, I am going to just chain a trillion if-statements to figure out which of the 30+ button was pressed...

  Thanks!

  • Florian
• flo

  December 2015 edited 11:47AM

  Hi again,

  just to document how I ended up doing this. My buttons are set up like this in a base_form item:

  widget 0 0 1 1 button var="resp_1" text="button 1"
  widget 0 1 1 1 button var="resp_2" text="button 2"
  ...
  widget 0 2 1 1 button var="resp_31" text="button 31"
  

  Then I place an inline_script item after the base_form which contains this code:

  button_id = 0
  for i in range(1, 32): #  highest resp_[num] + 1
      if exp.get('resp_' + str(i)) == 'yes':
          button_id = i
  

  Then I have the button_id and can work with that. Not very elegant but functional.

  • Florian
• eduard

  December 2015 edited 11:47AM

  Seems to be a valid solution to me. You might want to add a break statement in the end, to avoid pointless iterations in the loop, though.

  Eduard