Randomising colour of two polygons separately

Builder
1

If this template helps then use it. If not then just delete and start from scratch.

OS (e.g. Win10):
PsychoPy version (v.2002.2.5):
Standard Standalone? (y) If not then what?:
What are you trying to achieve?:
I have two different polygon stimuli. One remains in the same position and one changes position each trial. I want each of these to change to a different random colour on each trial (so polygon 1 should be a different colour than polygon 2).

What did you try to make it work?:
I have an excel sheet set up to randomise colours and I am using a different column for each polygon

What specifically went wrong when you tried that?:
At the moment the colour is changing on each trial but they are both coming up as the same colour as each other.

I’m guessing there is some code I need to add but I’m not super great with it and kind find any examples on a search so would really appreciate some advice!

Thanks in advance.

2

Hello KristyB

do you mind showing us how you tried to achieve to randomize each polygons’ color? It should work without code.

Best wishes Jens

3

Dual_task.psyexp (20.4 KB)

I’ve uploaded the experiment here and the conditions file looks like this:

excel
excel714×276 36 KB

4

Hello KirstyB

did try to specify the colours in the Excel-file wih “[” and “]” instead of “(” and “)”?

Best wishes Jens

5

Hi Jens,

I’ve just tried that but no luck :frowning:

6

Hello

try this
randColor.psyexp (7.6 KB)
randColor.xlsx (8.4 KB)

Best wishes Jens

7

Hi Jens,

Thank you for this unfortunately it doesn’t resolve the issue. I am able to randomise the colour of one polygon, the problem I am having is that I cannot randomise the colour of two polygons (they both take the same colour despite drawing from two different columns).

BW,
Kirsty

8

Have a look at my independent randomisation demo.

9

Thank you. I have actually just this second got it working with the excel file. For anyone else looking for a solution I ended up creating a new excel file (with all of the same information) and it worked so there must have been some error in the original excel file.