# Number of vertices of polygons in pavlovia
**URL:** https://discourse.psychopy.org/t/number-of-vertices-of-polygons-in-pavlovia/22142
**Category:** Online experiments
**Created:** [April 8, 2021, 2:43pm UTC](https://discourse.psychopy.org/t/number-of-vertices-of-polygons-in-pavlovia/22142 "2021-04-08T14:43:47Z")
**Posts on this page:** 9
**Page:** 1
### Author:  [@bets](https://discourse.psychopy.org/u/bets)
#### Post date: [April 8, 2021, 2:43pm UTC](https://discourse.psychopy.org/t/number-of-vertices-of-polygons-in-pavlovia/22142/1 "2021-04-08T14:43:47Z")
The resolution of the polygons I created in the experiment is high when I run psychopy, but drops when I run it in pavlovia. Even if I increase the number of vertices, they look corrupt in pavlovia. How can I fix this problem? Thanks in advance.
Here are the properties of the circles:
 
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### Author:  [@wakecarter](https://discourse.psychopy.org/u/wakecarter)
#### Post date: [April 8, 2021, 6:57pm UTC](https://discourse.psychopy.org/t/number-of-vertices-of-polygons-in-pavlovia/22142/2 "2021-04-08T18:57:25Z")
Looking at previous questions on this topic (search blurred online for example) I have to ask what version of PsychoPy are you using?
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### Author:  [@bets](https://discourse.psychopy.org/u/bets)
#### Post date: [April 8, 2021, 7:11pm UTC](https://discourse.psychopy.org/t/number-of-vertices-of-polygons-in-pavlovia/22142/3 "2021-04-08T19:11:32Z")
Thanks, I am using v2020.2.0.
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### Author:  [@wakecarter](https://discourse.psychopy.org/u/wakecarter)
#### Post date: [April 8, 2021, 7:55pm UTC](https://discourse.psychopy.org/t/number-of-vertices-of-polygons-in-pavlovia/22142/4 "2021-04-08T19:55:04Z")
That’s quite a buggy version. I’d recommend upgrading to 2020.2.10.
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### Author:  [@bets](https://discourse.psychopy.org/u/bets)
#### Post date: [April 8, 2021, 8:09pm UTC](https://discourse.psychopy.org/t/number-of-vertices-of-polygons-in-pavlovia/22142/5 "2021-04-08T20:09:13Z")
Thank you so much for your suggestion. If I update, do I need to make a lot of changes and fixes? I’m afraid to upgrade it because I started collecting data in Pavlovia with this version.
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### Author:  [@wakecarter](https://discourse.psychopy.org/u/wakecarter)
#### Post date: [April 8, 2021, 8:15pm UTC](https://discourse.psychopy.org/t/number-of-vertices-of-polygons-in-pavlovia/22142/6 "2021-04-08T20:15:19Z")
Are you using.thisN or similar for anything?
Generally within sub versions (2020.1, 2020.2, 2021.1) there are only improvements. Things break between sub versions due to new features.
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### Author:  [@bets](https://discourse.psychopy.org/u/bets)
#### Post date: [April 8, 2021, 8:27pm UTC](https://discourse.psychopy.org/t/number-of-vertices-of-polygons-in-pavlovia/22142/7 "2021-04-08T20:27:44Z")
I’m just using the codes below.
testphase.finished=True
psychoJS.quit();
round = function(num, n=0) { return +(Math.round(num + (“e+” + n)) + (“e-” + n)); }
if mouse.isPressedIn(ccircle):
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### Author:  [@wakecarter](https://discourse.psychopy.org/u/wakecarter)
#### Post date: [April 8, 2021, 9:37pm UTC](https://discourse.psychopy.org/t/number-of-vertices-of-polygons-in-pavlovia/22142/8 "2021-04-08T21:37:08Z")
You may need to delete round from code\_JS because it gets added automatically from around 2020.2.5 and there’s an error if it gets defined twice.
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### Author:  [@bets](https://discourse.psychopy.org/u/bets)
#### Post date: [December 9, 2021, 3:32pm UTC](https://discourse.psychopy.org/t/number-of-vertices-of-polygons-in-pavlovia/22142/9 "2021-12-09T15:32:37Z")
I upgraded psychopy to 2020.2.10. However, the circles are still jagged in pavlovia. What else can I do to fix it?