# Difference between two metrics

**URL:** <https://discuss.elastic.co/t/difference-between-two-metrics/157514>\
**Category:** Kibana\
**Created:** [November 20, 2018, 10:32am UTC](https://discuss.elastic.co/t/difference-between-two-metrics/157514 "2018-11-20T10:32:00Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Aya-kh](https://avatars.discourse-cdn.com/v4/letter/a/3e96dc/32.png) [@Aya-kh](https://discuss.elastic.co/u/Aya-kh)\
**Post date:** [November 20, 2018, 10:32am UTC](https://discuss.elastic.co/t/difference-between-two-metrics/157514/1 "2018-11-20T10:32:01Z")

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hi,  
i need your help  
How could I visualize the difference between two metrics ( numerical histogram) and the grouping by third field (string )

thanks in advance

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**Author:** ![spalger](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/spalger/32/14092_2.png) [@spalger](https://discuss.elastic.co/u/spalger)\
**Post date:** [November 21, 2018, 2:17am UTC](https://discuss.elastic.co/t/difference-between-two-metrics/157514/2 "2018-11-21T02:17:50Z")

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You probably want to checkout timelion. It is pretty easy to subtract two time series with the expression language there, once you get the hang of it.

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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:** [December 19, 2018, 2:17am UTC](https://discuss.elastic.co/t/difference-between-two-metrics/157514/3 "2018-12-19T02:17:54Z")

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