Presenting two images

Comments

• Jarik

  January 2017

  Hi rrr,

  Did you use the 'Full-factorial design' button in the loop item? See:

  • http://osdoc.cogsci.nl/3.1/tutorials/beginner/#step-3-fill-the-block-loop-with-independent-variables

  Best,
  Jarik
• rrr

  January 2017

  Hello Jarik,

  Yes I used 'Full-factorial design' in the loop item.
  Is it wrong for my design?

  Thanks
• Jarik

  January 2017

  Hello rrr,

  It's hard to say with so little detail.

  But your loop item is fully filled like figure 8 below?
  http://osdoc.cogsci.nl/3.1/tutorials/beginner/#FigStep3

  Best,
  Jarik
• rrr

  January 2017

  Hi,

  There are 2 rows (image and position) in loop item. The former includes 10 columns (10 images), and the latter does 2 (-300 and 300) as I have already showed by image attached to my first post. So the design is 10x2 full factorial.

  OpenSesame shows an error as below.

  Traceback (most recent call last):
    File "/Applications/OpenSesame.app/Contents/Resources/lib/python2.7/site-packages/libqtopensesame/items/loop.py", line 101, in _show_preview
      dm = self._create_live_datamatrix()
    File "/Applications/OpenSesame.app/Contents/Resources/lib/python2.7/site-packages/libopensesame/loop.py", line 230, in _create_live_datamatrix
      dm <<= operations.shuffle(src_dm)[:i]
    File "/Applications/OpenSesame.app/Contents/Resources/lib/python2.7/site-packages/python_datamatrix-0.3.1-py2.7.egg/datamatrix/operations.py", line 375, in shuffle
      return obj._selectrowid(_rowid)
    File "/Applications/OpenSesame.app/Contents/Resources/lib/python2.7/site-packages/python_datamatrix-0.3.1-py2.7.egg/datamatrix/_datamatrix/_datamatrix.py", line 161, in _selectrowid
      dm._cols[name] = self._cols[name]._getrowidkey(_rowid)
    File "/Applications/OpenSesame.app/Contents/Resources/lib/python2.7/site-packages/python_datamatrix-0.3.1-py2.7.egg/datamatrix/_datamatrix/_basecolumn.py", line 418, in _getrowidkey
      col._seq.append(self._seq[self._rowid.index(_rowid)])
  IndexError: list index out of range
  

  Thanks
• Jarik

  January 2017

  So if I use 'Full-factorial design' to create an example table, it looks like the image below. Note the two empty selected blue cells.

  

  When I click OK the loop item is filled like the image below. Note there are no empty cells!

  

  Does this help?

  Jarik
• rrr

  January 2017

  Hi Jarik,

  It goes well! I misunderstood the way of 'Full-factorial design' .
  Then I'm trying to create an simple experiment similar to this design as a test (please see the attached program). The design is fixed by the default table of loop item. I have gotten an error as below.

  Details
  
  item-stack: ``
  exception message: [Errno 2] No such file or directory
  time: Mon Jan 9 16:54:33 2017
  exception type: OSError
  

  Also, It says "[image] is unknown or variably defined" in the sketchpad.

  What is the cause of this?

  Thanks a lot!
• Jarik

  January 2017

  It goes well! I misunderstood the way of 'Full-factorial design' .

  I thought so. This is why I provided a link to the beginner tutorial in my first post

  Also, It says "[image] is unknown or variably defined" in the sketchpad.

  This is the normal behavior (as the image is selected at run-time so it can't be displayed)

  It's a very good idea to create a simple experiment to test things. I also think you really should do the tutorial(s):

  • http://osdoc.cogsci.nl/3.1/tutorials/beginner
  • http://osdoc.cogsci.nl/3.1/tutorials/intermediate

  Good luck,
  Jarik
• rrr

  January 2017

  Hi Jarik,

  Thanks a lot, but what's the cause of error I mentioned in my 4th comment.
  Sometimes, Opensesame suddenly crashes without showing any errors when I run the experiment.
• rrr

  January 2017 edited January 2017

  Hi,

  I found the error is caused by OpenSesame Runner http://forum.cogsci.nl/index.php?p=/discussion/2437/experiments-dont-run-on-mac-capitan-os-error-without-traceback-info#latest.
  It run correctly without any errors when I use multiprocess or_ inprocess_. It may be better to use inprocess because the multiprocess runner takes long time to run the experiment.

  Unfortunately there remains a problem of stimulus presenting duration. It takes approximately 4 seconds even though I specified the duration of 1 second in sketchpad.
  I have used Opensesame with Expyriment backend in Mac OS10.11.6.

  Also I'm not sure which is the best way to present two images simultaneously, sketchpad or inline_script.