URL of experiment: Here Description of the problem: This experiment is built to test a method for measuring a length estimation based on a moving image. Participants see a square that is either stationary or moving sinusoidally from left to right They are then shown a much smaller rectangle (hei…

I think I found a fix. As you observed, at the first frame the growing square is shown with the size of whatever it was last (some default size at the first trial, last width at later trials). I could fix it by adding a code snippet in your code component, Begin Routine tab, that sets it to the same…

Hey! Could you share your gitlab experiment with me so I can take a peek? My username is tpronk Best, Thomas

BTW, is it OK if I make my clone of your experiment public? Then I can easily link to it in a bug report.

Please do, that is fine with me!

Awesome, thank you for this. I will test it out ASAP! Edit: Just tested it out and it works perfectly! Thank you so much! :slight_smile:

Thanks! Give a shout if this fixes your problem; then I can mark my post as a solution

This thread has been a life saver! I have had similar issues where previous positions or previous images flash in the first frame. Thomas’s response inspired me to see check my code, and using setPos and setImage in the begin Routine section of my code component has fixed my animation issues. A solu…

Experiment uploaded to Pavlovia has brief black spots and after-images from previous trials

Online experiments

DavidBrocker March 19, 2021, 1:07pm 3

Hey Thomas!

I just added you to the experiment, thank you!

Demonstrate the slider value

Topic		Replies	Views
Animation issues: Components do not load for first trial Online experiments	0	295	November 24, 2020
Coding works for all routines but the first Online experiments coding , pavlovia	7	679	November 9, 2020
Experiment running in builder but stops after 1 trial in pavlovia Online experiments pavlovia	19	2061	February 9, 2021
Grow size of square on conditional keyboard press Builder	4	579	March 17, 2021
Images not showing up on the first run Online experiments	8	1480	September 14, 2021

Experiment uploaded to Pavlovia has brief black spots and after-images from previous trials

Related topics