[solved] Different ERP triggers for different conditions

Comments

• lvanderlinden

  November 2012 edited 10:22AM

  ITA

  We will come back to you as soon as possible.

  Did you like my answer? Feel free to
• Edwin

  November 2012 edited November 2012

  Hi Michel!

  You could do this as follows:

  NOTE: edited in line with Lotje's comment below:

  if self.get("Context") == Whole:
      p = '1'
  elif self.get("Context") == Half:
      p = '2'
  else:
      p = '3'
  
  if self.get("Lateralization") == Left:
      o = '1'
  else:
      o = '2'
  
  strpo = p + o
  po = int(strpo)
  

  What the script does is saving your triggerparts as strings, then adding the strings for p and o together and finally reverting them to integers.

  Good luck!

  Edwin
• MichelQ

  November 2012 edited 10:22AM

  Hi Edwin,

  thanks for the reply. Good call to save them as strings and reverting them to integers, I hadn't thought of that to get the 'po' part working.

  Unfortunatly, the script in total doesn't seem to work and gives me the following error:

  Python 2.6.6
  Type "help()", "copyright()", "credits()" or "license()" for more information.
  Type "modules()" for details about installed modules and version information.
  Use the "print [msg]" statement in inline_script items to print to this debug window.
  >>> 
  openexp.sampler._legacy.init_sound(): sampling freq = 48000, buffer size = 512
  openexp._canvas.legacy.init_display(): enabling hardware surface
  openexp._canvas.legacy.init_display(): enabling double buffering
  openexp._canvas.legacy.init_display(): video mode ok
  experiment.init_log(): using 'C:/Documents and Settings/erp.users/Desktop/[PMQ]CNSWexp1/subject-0.csv' as logfile (ascii)
  experiment.run(): experiment started at Mon Nov 26 12:04:37 2012
  Traceback (most recent call last):
    File "libopensesame\inline_script.pyo", line 97, in prepare
    File "", line 1
      If self.get("Context") = Whole:
            ^
  SyntaxError: invalid syntax
  

  I guess he doesn't recognize the variable? Or I refer to it in the wrong way?

  greetings,

  Michel
• lvanderlinden

  November 2012 edited 10:22AM

  NOTE: the answer was edited after being posted.

  Hi Michel,

  There are three problems with the if-then statements in your script:

  Firstly, note the following general rule:

  When assigning a value to a variable, use =, the assignment operator, like so:
  

   i = 5

  When comparing if two objects are equal, such as when comparing whether the variable Context has the value "Whole", use ==, the equal-to operator, like so:
  

  if i == 5:
  
          print "i is five"

  Secondly, you should indicate that the value 'whole' is a string, by putting the word into sinlge (') or double (") quotes.

  Thirdly, 'if' does not start with a capital (and neither do all other parts of control flow statements).

  Applied to your script, this becomes:
  

  if self.get("Context") == "Whole":
  
      p = '1'

  
  etc.

  I hope this helps,

  Best wishes,

  Lotje

  Did you like my answer? Feel free to
• Edwin

  November 2012 edited 10:22AM

  Lol, I should've spotted that!
• MichelQ

  November 2012 edited 10:22AM

  Thanks a lot!

  I should have seen that aswell. I should know basic python (although I'm just starting with it and have no previous programming experience).

  The script is working great now!

  Michel