# Json input - calculated with derived values like unique-count

**URL:** <https://discuss.elastic.co/t/json-input-calculated-with-derived-values-like-unique-count/121116>\
**Category:** Kibana\
**Created:** [February 22, 2018, 7:16pm UTC](https://discuss.elastic.co/t/json-input-calculated-with-derived-values-like-unique-count/121116 "2018-02-22T19:16:29Z")\
**Posts on this page:** 1\
**Showing post:** 11

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**Author:** ![LeeDr](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/leedr/32/9289_2.png) [@LeeDr](https://discuss.elastic.co/u/LeeDr)\
**Post date:** [February 23, 2018, 4:36pm UTC](https://discuss.elastic.co/t/json-input-calculated-with-derived-values-like-unique-count/121116/11 "2018-02-23T16:36:46Z")

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This is kind of a long discuss thread but there are some notes about using Overall Average in it;

> [@Doing Math over count of events](https://discuss.elastic.co/t/doing-math-over-count-of-events/97278/33):
>
> Actually if i count the numbers on Spike manually, i am getting the right value which i see in the discover tab i.e 15 for today. On the right side, it shows 0, not sure how do i actually calculate it real time.

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