# Apply a filter to a count on the y-axis of a bar vizualization
**URL:** https://discuss.elastic.co/t/apply-a-filter-to-a-count-on-the-y-axis-of-a-bar-vizualization/256133
**Category:** Kibana
**Created:** [November 20, 2020, 2:32pm UTC](https://discuss.elastic.co/t/apply-a-filter-to-a-count-on-the-y-axis-of-a-bar-vizualization/256133 "2020-11-20T14:32:55Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@SilvrDuck](https://discuss.elastic.co/u/SilvrDuck)
#### Post date: [November 20, 2020, 2:32pm UTC](https://discuss.elastic.co/t/apply-a-filter-to-a-count-on-the-y-axis-of-a-bar-vizualization/256133/1 "2020-11-20T14:32:55Z")
Hi,
I have a collection of timestamped events being part of two categories. I can filter on a field to get the events of any and display them as a histogram aggregated by timestamp. So far so good.
I can't plot both on the same plot though. I only managed to add global filters. I would simply like to see at any given time what proportion of one I get over the other.
How could I do that? I can't seem to find any filter at the metrics level.
Best
Kibana version: v 7.9.1
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### Author:  [@Marta\_Bondyra](https://discuss.elastic.co/u/Marta_Bondyra)
#### Post date: [November 24, 2020, 4:18pm UTC](https://discuss.elastic.co/t/apply-a-filter-to-a-count-on-the-y-axis-of-a-bar-vizualization/256133/2 "2020-11-24T16:18:37Z")
Hey @SilvrDuck,
I am not sure if I fully understand the question, can you post a screenshot of what you are trying to achieve?
Nevertheless, I think filters aggregation could be helpful for you. Here's the example with sample data:
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### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [December 22, 2020, 4:18pm UTC](https://discuss.elastic.co/t/apply-a-filter-to-a-count-on-the-y-axis-of-a-bar-vizualization/256133/3 "2020-12-22T16:18:40Z")
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