# Using JSON Input in piechart for Visualization

**URL:** <https://discuss.elastic.co/t/using-json-input-in-piechart-for-visualization/112538>\
**Category:** Kibana\
**Created:** [December 20, 2017, 2:51am UTC](https://discuss.elastic.co/t/using-json-input-in-piechart-for-visualization/112538 "2017-12-20T02:51:03Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![Hussain\_Khan](https://avatars.discourse-cdn.com/v4/letter/h/2acd7d/32.png) [@Hussain\_Khan](https://discuss.elastic.co/u/Hussain_Khan)\
**Post date:** [December 20, 2017, 2:51am UTC](https://discuss.elastic.co/t/using-json-input-in-piechart-for-visualization/112538/1 "2017-12-20T02:51:03Z")

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Hello Team,

I'm trying to generate a simple piechart as a Visualisation in Kibana with some custom Filters, which is nothing but a hostname where the request been hit.

The current visualisation works for me but the worry factor is the filters which I added in the split slices may gets change anytime , so the current 3 filters (combination of character & numbers) gets change anytime and my visualisation may get broken or shows incorrect result. Please see attached image for more detail.

So, basically, what I'm looking is can i add filters in term of regex (never used regex to an extent) instead of hard coding the values. The value/string of the filters is always be a combination of numbers & characters with 11 characters.

 ![56 AM](https://us1.discourse-cdn.com/elastic/original/3X/e/1/e135758918395eb78e2b7f6a586d8355abf351c0.png)

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**Author:** ![Nathan\_Reese](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/nathan_reese/32/84829_2.png) [@Nathan\_Reese](https://discuss.elastic.co/u/Nathan_Reese)\
**Post date:** [December 20, 2017, 5:52pm UTC](https://discuss.elastic.co/t/using-json-input-in-piechart-for-visualization/112538/2 "2017-12-20T17:52:24Z")

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Yes, you can define filters with regular expressions. See [https://www.elastic.co/guide/en/elasticsearch/reference/master/query-dsl-query-string-query.html#\_regular\_expressions](https://www.elastic.co/guide/en/elasticsearch/reference/master/query-dsl-query-string-query.html#_regular_expressions) for reference

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<div class="post-metadata">

**Author:** ![Hussain\_Khan](https://avatars.discourse-cdn.com/v4/letter/h/2acd7d/32.png) [@Hussain\_Khan](https://discuss.elastic.co/u/Hussain_Khan)\
**Post date:** [December 21, 2017, 1:52am UTC](https://discuss.elastic.co/t/using-json-input-in-piechart-for-visualization/112538/3 "2017-12-21T01:52:54Z")

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Thanks Nathan for sharing the reference. Can you please help to build the regular expression, I'm struggling a bit to enjoin with using filters

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<div class="post-metadata">

**Author:** ![Nathan\_Reese](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/nathan_reese/32/84829_2.png) [@Nathan\_Reese](https://discuss.elastic.co/u/Nathan_Reese)\
**Post date:** [December 21, 2017, 1:48pm UTC](https://discuss.elastic.co/t/using-json-input-in-piechart-for-visualization/112538/4 "2017-12-21T13:48:31Z")

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[https://regex101.com/](https://regex101.com/) is a great site that allows you to experiment with regex and quickly find what works

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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:** [January 18, 2018, 1:48pm UTC](https://discuss.elastic.co/t/using-json-input-in-piechart-for-visualization/112538/5 "2018-01-18T13:48:38Z")

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