When setting the image of ImageStim: pracImage the argument: is neither an image nor a video" }

Online experiments
1

URL of experiment: GNG_Experiment [PsychoPy]

Description of the problem: When trying to run the experiment I run into the error message: “when setting the image of ImageStim: pracImage the argument: is neither an image nor a video” }"

I have an image time called pracImage, which is looking for $pracTarget (set every repeat).

This decision comes from code at the start of the experiment. I have pasted the JS code below (via auto-JS):

pracRows = [[0, 1, 2, 3, 4], [5, 6, 7, 8, 9], [10, 11, 12, 13, 14]];
util.shuffle(pracRows);
pracRows = pracRows[0];
pracTarget = [];
pracText1 = [];
pracText2 = [];
pracText3 = [];
if ((pracRows === [0, 1, 2, 3, 4])) {
    pracTarget = "Circle.png";
    pracText1 = "TRIANGLES";
    pracText2 = "SQUARES";
    pracText3 = "CIRCLES";
} else {
    if ((pracRows === [5, 6, 7, 8, 9])) {
        pracTarget = "Square.jpg";
        pracText1 = "TRIANGLES";
        pracText2 = "CIRCLES";
        pracText3 = "SQUARES";
    } else {
        if ((pracRows === [10, 11, 12, 13, 14])) {
            pracTarget = "Triangle.png";
            pracText1 = "SQUARES";
            pracText2 = "CIRCLES";
            pracText3 = "TRIANGLES";
        }
    }
}

This works fine locally, but not online. I tried to open the console to have a look but it is not showing me where in my JS code it’s going wrong, only where it’s pulling the error message from.

2

Might there be an issue with pracRows? Try printing the value to the console.

3

The console log states “Array (5)” , does this mean instead of it storing [1,2,3,4,5] etc, it’s instead storing type and length? Or is this how it should appear with JS?

Did not spot the collapsible arrow. It says

0: 5
1: 6
2: 7
3: 8
4: 9
length: 5
5

I’m concerned that you might always be getting the else condition. An alternative would be just to check the first entry, e.g.

if ((pracRows[0] === 0)) {
1 Like
6

You were correct, I tested it a few times and it was only displaying the “else”.

Changing to check the first item in the array has fixed the issue