# Kibana TSVB Metric -\> Delta between today and yesterday

**URL:** https://discuss.elastic.co/t/kibana-tsvb-metric-delta-between-today-and-yesterday/274064
**Category:** Kibana
**Created:** [May 26, 2021, 1:35pm UTC](https://discuss.elastic.co/t/kibana-tsvb-metric-delta-between-today-and-yesterday/274064 "2021-05-26T13:35:04Z")
**Posts on this page:** 4
**Page:** 1

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### Author: ![Lucas\_Erlacher](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/lucas_erlacher/32/87507_2.png) [@Lucas\_Erlacher](https://discuss.elastic.co/u/Lucas_Erlacher)
#### Post date: [May 26, 2021, 1:35pm UTC](https://discuss.elastic.co/t/kibana-tsvb-metric-delta-between-today-and-yesterday/274064/1 "2021-05-26T13:35:04Z")

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Hello Community,

I have the following metric showing today's & yesterday's avg. session duration. Is there a way to show the delta between the 2 metrics? Thanks a lot for your help.

 ![Screenshot 2021-05-26 at 15.29.00](https://us1.discourse-cdn.com/elastic/original/3X/2/b/2be96c56a270acb5c2f532bdb7472a2dc21bfe8b.png)  
 ![Screenshot 2021-05-26 at 15.29.08](https://us1.discourse-cdn.com/elastic/original/3X/3/5/35af04281ee039d27d003946cd3b7e4e081431e6.png)  
 ![Screenshot 2021-05-26 at 15.29.32](https://us1.discourse-cdn.com/elastic/original/3X/f/9/f9b44cc60aaa0b879796a58df8c4334f381b8363.png)  
 ![Screenshot 2021-05-26 at 15.29.22](https://us1.discourse-cdn.com/elastic/original/3X/e/9/e9cd47050c88a71416acdce8f9df47974ac9dac4.png)

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<div class="post-metadata">

### Author: ![Stratoula\_Kalafateli](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/stratoula_kalafateli/32/70923_2.png) [@Stratoula\_Kalafateli](https://discuss.elastic.co/u/Stratoula_Kalafateli)
#### Post date: [May 31, 2021, 9:08am UTC](https://discuss.elastic.co/t/kibana-tsvb-metric-delta-between-today-and-yesterday/274064/2 "2021-05-31T09:08:04Z")

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@Lucas_Erlacher, although TSVB allows math functions like that

 ![image](https://us1.discourse-cdn.com/elastic/original/3X/2/8/28c182e32e723ed7ccc7175b6b3a7242100cbfa8.png)

it doesn't yet support math functions between two different series [Support Bucket Script Aggregation · Issue #4707 · elastic/kibana · GitHub](https://github.com/elastic/kibana/issues/4707)

It is very possible to be able to do it with vega though

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<div class="post-metadata">

### Author: ![Lucas\_Erlacher](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/lucas_erlacher/32/87507_2.png) [@Lucas\_Erlacher](https://discuss.elastic.co/u/Lucas_Erlacher)
#### Post date: [June 7, 2021, 3:39pm UTC](https://discuss.elastic.co/t/kibana-tsvb-metric-delta-between-today-and-yesterday/274064/3 "2021-06-07T15:39:55Z")

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Thanks a lot for your reply @Stratoula_Kalafateli

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<div class="post-metadata">

### Author: ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)
#### Post date: [July 5, 2021, 3:40pm UTC](https://discuss.elastic.co/t/kibana-tsvb-metric-delta-between-today-and-yesterday/274064/4 "2021-07-05T15:40:26Z")

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