# Scatterplot in Vega Error

**URL:** <https://discuss.elastic.co/t/scatterplot-in-vega-error/187419>\
**Category:** Kibana\
**Created:** [June 25, 2019, 7:12pm UTC](https://discuss.elastic.co/t/scatterplot-in-vega-error/187419 "2019-06-25T19:12:44Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![dundundundun](https://avatars.discourse-cdn.com/v4/letter/d/87869e/32.png) [@dundundundun](https://discuss.elastic.co/u/dundundundun)\
**Post date:** [June 25, 2019, 7:12pm UTC](https://discuss.elastic.co/t/scatterplot-in-vega-error/187419/1 "2019-06-25T19:12:45Z")

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Hi! I am trying to create a scatterplot with data from my index "testing" with @timestamp on the x-axis and the field "reboot" on the y-axis through the Vega visualization platform. However, I'm getting the following error:

 ![Vega_error](https://us1.discourse-cdn.com/elastic/original/3X/f/7/f7efbcefaaf96e2635f872361d756abbc48b5ba6.png)

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<div class="post-metadata">

**Author:** ![dundundundun](https://avatars.discourse-cdn.com/v4/letter/d/87869e/32.png) [@dundundundun](https://discuss.elastic.co/u/dundundundun)\
**Post date:** [June 25, 2019, 8:26pm UTC](https://discuss.elastic.co/t/scatterplot-in-vega-error/187419/2 "2019-06-25T20:26:39Z")

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Update: unable to refer to @timestamp properly for some reason but for other fields, the syntax that worked for me is as follows: \_source['']

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**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [July 23, 2019, 8:27pm UTC](https://discuss.elastic.co/t/scatterplot-in-vega-error/187419/3 "2019-07-23T20:27:06Z")

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