# Size of the circles in Kibana Tile map visualization
**URL:** https://discuss.elastic.co/t/size-of-the-circles-in-kibana-tile-map-visualization/108395
**Category:** Kibana
**Created:** [November 20, 2017, 1:41pm UTC](https://discuss.elastic.co/t/size-of-the-circles-in-kibana-tile-map-visualization/108395 "2017-11-20T13:41:46Z")
**Posts on this page:** 6
**Page:** 1
### Author:  [@pawelmaga](https://discuss.elastic.co/u/pawelmaga)
#### Post date: [November 20, 2017, 1:41pm UTC](https://discuss.elastic.co/t/size-of-the-circles-in-kibana-tile-map-visualization/108395/1 "2017-11-20T13:41:46Z")
In Kibana we have a visualization called _Tile map_ which has has several options to customize, such as map type.
My question is about one of this types: **Shaded Circle Markers** which is basically about changing colors based on value.
[Documentation](https://www.elastic.co/guide/en/kibana/5.0/tilemap.html) says:
> Displays the markers with different shades based on the metric aggregation’s value.
and that's correct, but I don't understand why some bubles are bigger than others.
I assume that this may be due to the distortion caused by [Mercator projection](https://en.wikipedia.org/wiki/Mercator_projection), which which is well presented by [Tissot's indicatrix](https://en.wikipedia.org/wiki/Tissot%27s_indicatrix), but I didn't find any source which confirming my hypothesis.
Could you confirm my suspicion or explain in other way this behavior?
[](https://i.stack.imgur.com/DpTvk.png)
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### Author:  [@rashmi](https://discuss.elastic.co/u/rashmi)
#### Post date: [November 20, 2017, 4:45pm UTC](https://discuss.elastic.co/t/size-of-the-circles-in-kibana-tile-map-visualization/108395/2 "2017-11-20T16:45:56Z")
Its a great q. I have posted this question internally.I will try and find the answer for you.
Thanks
Rashmi
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### Author:  [@Nathan\_Reese](https://discuss.elastic.co/u/Nathan_Reese)
#### Post date: [November 21, 2017, 1:36am UTC](https://discuss.elastic.co/t/size-of-the-circles-in-kibana-tile-map-visualization/108395/3 "2017-11-21T01:36:50Z")
pawelmaga,
You are correct, the circle sizes vary because of mercator project distortion.
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### Author:  [@rashmi](https://discuss.elastic.co/u/rashmi)
#### Post date: [November 21, 2017, 1:53am UTC](https://discuss.elastic.co/t/size-of-the-circles-in-kibana-tile-map-visualization/108395/4 "2017-11-21T01:53:49Z")
Thanks @Nathan_Reese
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### Author:  [@pawelmaga](https://discuss.elastic.co/u/pawelmaga)
#### Post date: [November 21, 2017, 8:00am UTC](https://discuss.elastic.co/t/size-of-the-circles-in-kibana-tile-map-visualization/108395/5 "2017-11-21T08:00:49Z")
Thank you all for your replies, I appreciate it 😉
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### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [December 19, 2017, 8:00am UTC](https://discuss.elastic.co/t/size-of-the-circles-in-kibana-tile-map-visualization/108395/6 "2017-12-19T08:00:55Z")
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