# Can't display tooltip at all in Vega Pie Chart

**URL:** https://discuss.elastic.co/t/cant-display-tooltip-at-all-in-vega-pie-chart/264056
**Category:** Kibana
**Tags:** vega
**Created:** [February 11, 2021, 9:21pm UTC](https://discuss.elastic.co/t/cant-display-tooltip-at-all-in-vega-pie-chart/264056 "2021-02-11T21:21:40Z")
**Posts on this page:** 1
**Showing post:** 4

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### Author: ![wylie](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/wylie/32/81794_2.png) [@wylie](https://discuss.elastic.co/u/wylie)
#### Post date: [February 12, 2021, 5:20pm UTC](https://discuss.elastic.co/t/cant-display-tooltip-at-all-in-vega-pie-chart/264056/4 "2021-02-12T17:20:14Z")

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I've never seen an example, but isn't that something you can calculated based on the `pie` transform? You could probably take `(datum.endAngle - datum.startAngle) / (2 * PI)` as your percentae.

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