# Painless script for metric fields calculation

**URL:** <https://discuss.elastic.co/t/painless-script-for-metric-fields-calculation/76431>\
**Category:** Kibana\
**Created:** [February 24, 2017, 5:44pm UTC](https://discuss.elastic.co/t/painless-script-for-metric-fields-calculation/76431 "2017-02-24T17:44:05Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![sharon.c](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/sharon.c/32/16076_2.png) [@sharon.c](https://discuss.elastic.co/u/sharon.c)\
**Post date:** [February 24, 2017, 5:44pm UTC](https://discuss.elastic.co/t/painless-script-for-metric-fields-calculation/76431/1 "2017-02-24T17:44:05Z")

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Can I use painless script for the metric fields such as sum?  
I already have two metric fields: sum(field1) and sum(field2)  
I want to create data table in Kibana with one script field value = sum(field1) / sum(field2)  
Is there any way to do it with painless script?

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**Author:** ![cjcenizal](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/cjcenizal/32/11216_2.png) [@cjcenizal](https://discuss.elastic.co/u/cjcenizal)\
**Post date:** [February 24, 2017, 9:36pm UTC](https://discuss.elastic.co/t/painless-script-for-metric-fields-calculation/76431/2 "2017-02-24T21:36:11Z")

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Hi Sharon, unfortunately you can't create scripted fields that operate on more than one document.

From our [blog post on using Painless in scripted fields](https://www.elastic.co/blog/using-painless-kibana-scripted-fields):

> Scripted fields operate on one Elasticsearch document at a time, but can reference multiple fields in that document. As a result, it is appropriate to use scripted fields to combine or transform fields within a single document, but not perform calculations based on on multiple documents (e.g. time-series math).

Does this answer your question?

Thanks,  
CJ

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<div class="post-metadata">

**Author:** ![sharon.c](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/sharon.c/32/16076_2.png) [@sharon.c](https://discuss.elastic.co/u/sharon.c)\
**Post date:** [February 26, 2017, 2:02am UTC](https://discuss.elastic.co/t/painless-script-for-metric-fields-calculation/76431/3 "2017-02-26T02:02:21Z")

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Thanks! I think for my use case, I will use timelion features. Only problem is that timelion does not allow me to download the data behind 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:** [March 26, 2017, 2:02am UTC](https://discuss.elastic.co/t/painless-script-for-metric-fields-calculation/76431/4 "2017-03-26T02:02:35Z")

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