# Unknown position units: undefined

**URL:** <https://discourse.psychopy.org/t/unknown-position-units-undefined/11720>\
**Category:** Online experiments\
**Created:** [March 24, 2020, 11:43pm UTC](https://discourse.psychopy.org/t/unknown-position-units-undefined/11720 "2020-03-24T23:43:09Z")\
**Posts on this page:** 1\
**Showing post:** 8

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**Author:** ![jonathan.kominsky](https://avatars.discourse-cdn.com/v4/letter/j/a587f6/32.png) [@jonathan.kominsky](https://discourse.psychopy.org/u/jonathan.kominsky)\
**Post date:** [March 26, 2020, 2:59pm UTC](https://discourse.psychopy.org/t/unknown-position-units-undefined/11720/8 "2020-03-26T14:59:31Z")

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Weird. There must be a disagreement in the coordinate systems being used in JavaScript, but if even setting it to pixels doesn’t work, I don’t know how. See if this thread is of any help to you: [Error in a loop of images in online version only](https://discourse.psychopy.org/t/error-in-a-loop-of-images-in-online-version-only/4999/17)

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