Monkey-patching for more flexible randomisation in OpenSesame

Comments

• alisdt

  June 2015 edited 8:12PM

  # Replace run() for loop object with our own methods
  import random
  import openexp
  import types
  
  # Modified copy of original run() method
  def new_MyLoop_run(self):
      self.set_item_onset()
  
      # generate cycle numbers (custom)
      # come up with an order of IDs from the table
      # First 32 are experiment, rest are filler
      # 2*11, 3*10, 4*10 plus 1*3 at start = 32 filler sequences
      n_filler_seq = [2]*11 + [3]*10 + [4]*10
      random.shuffle(n_filler_seq)
      n_filler_seq = [3] + n_filler_seq
      test_ids = range(0,32)
      filler_ids = range(32,128)
      l = []
      for n_filler in n_filler_seq:
          for _ in range(n_filler):
              l.append(filler_ids.pop(random.randrange(len(filler_ids))))
          l.append(test_ids.pop(random.randrange(len(test_ids))))
  
      # Create a keyboard to flush responses between cycles
      self._keyboard = openexp.keyboard.keyboard(self.experiment)
  
      # Make sure the item to run exists
      if self.item not in self.experiment.items:
          raise osexception( \
              u"Could not find item '%s', which is called by loop item '%s'" \
              % (self.item, self.name))
  
      # And run!
      _item = self.experiment.items[self.item]
      while len(l) > 0:
          cycle = l.pop(0)
          self.apply_cycle(cycle)
          self.experiment.set(u'repeat_cycle', 0)
          _item.prepare()
          _item.run()
  
  test_obj = exp.items["MyLoop"]
  test_obj.run = types.MethodType(new_MyLoop_run, test_obj)
  
• sebastiaan

  June 2015 edited 8:12PM

  Thanks for sharing!

  
  
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