Pavlovia: Argument should be an array of numbers of length 3

Online experiments
1

URL of experiment: https://pavlovia.org/pasoba/fsstep

Description of the problem:

I want Psychopy to drag a new Polygon colour every trial from my conditionsfile. It worked fine when I had set the Polygon colour to “constant” but since i changed it to “set every repeat” I always get the error “the argument should be an array of numbers of length 3”.
In my conditionfile I specified the colour as -0.7,-0.7,-0.7 (rgb colour space) so there should be 3 numbers.
I had brackets around the numbers at first but I saw in another post that I should remove them and place them in the Polygon Properties. Unfortunately that didn’t helped.

I am very grateful for any help

2

Hi There,

Try having a unique column for each value.
So the input in FillColor should read

$[Col1, Col2, Col3]

Where you have 3 columns in your conditions file (one per colour)

Here is a demo :slight_smile: Polygon_colour.psyexp (5.1 KB) conditions.xlsx (8.6 KB)

Hope this helps,

Becca

3

Hi Becca,

Thanks a lot for the reply. Sadly it didn’t worked for me. I still get the same error.

4

Hi There,

Did the demo attached above work if you push that to pavlovia and run try it in pilot mode?

Thanks,
Becca

5

Hey Becca

Your version did not worked either on my laptop. On a colleagues Laptop both of them worked so the error seems to be with my Laptop and not with Psychopy/ Pavlovia.

Thank you so much for your time and help.
Paula