Issues with counter balancing

joanne

Hi there i was wondering if any one could help.

I have designed my experiment which contains 8 seperate blocks, I have read and watched all tutorials regarding counter balancing with particular attention to the python code for counter balancing for more than two blocks. However when tryingnto run the experiment I keep getting notification that both skip and offset are removed. Can any one advise on how to correct this issue?

Thank you in advance

Josh

Hi Joanne,

Could you copy-paste the notification in here? We'll also need more details, e.g. your python code, and structure of the loop item.

Cheers

Josh

joanne

Hi Josh

this is the overall layout of my experiment -

The notification -

the structure of my counter balancing code is as follows:

if self.get ('subject_nr')%8 == 1:
b1 = 0
b2 = 1
b3 = 2
b4 = 3
b5 = 4
b6 = 5
b7 = 6
b8 = 7
elif self.get ('subject_nr')%8 == 2:
b1 = 7
b2 = 0
b3 = 1
b4 = 2
b5 = 3
b6 = 4
b7 = 5
b8 = 6
elif self.get ('subject_nr')%8 == 3:
b1 = 6
b2 = 7
b3 = 0
b4 = 1
b5 = 2
b6 = 3
b7 = 4
b8 = 5
elif self.get ('subject_nr')%8 == 4:
b1 = 5
b2 = 6
b3 = 7
b4 = 0
b5 = 1
b6 = 2
b7 = 3
b8 = 4
elif self.get ('subject_nr')%8 == 5:
b1 = 4
b2 = 5
b3 = 6
b4 = 7
b5 = 0
b6 = 1
b7 = 2
b8 = 3
elif self.get ('subject_nr')%8 == 6:
b1 = 3
b2 = 4
b3 = 5
b4 = 6
b5 = 7
b6 = 0
b7 = 1
b8 = 2
elif self.get ('subject_nr')%8 == 7:
b1 = 2
b2 = 3
b3 = 4
b4 = 5
b5 = 6
b6 = 7
b7 = 0
b8 = 1
elif self.get ('subject_nr')%8 == 8:
b1 = 1
b2 = 2
b3 = 3
b4 = 4
b5 = 5
b6 = 6
b7 = 7
b8 = 0
exp.set ('b1',b1)
exp.set ('b2',b2)
exp.set ('b3',b3)
exp.set ('b4',b4)
exp.set ('b5',b5)
exp.set ('b6',b6)
exp.set ('b7',b7)
exp.set ('b8',b8)

thank you

Joanne

joanne

Hi Josh

I have totally redesigned the experiment however i am now getting error messages with regards to my images.

i have attached screen prints of the error message plus my set up if you could advise me I would be greatly appreciated

joanne

Knante

Hi Joanne,

It seems that your are referring to a non-exisiting picture or picture name ".jpg". The correct way to loop over a set of pictures is to call them on a sketchpad (or canvas) by "[your_variable_name].jpg" or "[your_variable_name].png". I guess you forgot to add the variable name somewhere.

Best,
Laurent