# Configurable rolling percentile/quantile plot?

**URL:** <https://forum.intervals.icu/t/configurable-rolling-percentile-quantile-plot/130865>\
**Category:** Feature Requests\
**Created:** [2 August 2026 09:35 UTC](https://forum.intervals.icu/t/configurable-rolling-percentile-quantile-plot/130865 "2026-08-02T09:35:16Z")\
**Posts on this page:** 1\
**Showing post:** 3

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**Author:** ![bronekp](https://forum.intervals.icu/user_avatar/forum.intervals.icu/bronekp/32/29156_2.png) [@bronekp](https://forum.intervals.icu/u/bronekp)\
**Post date:** [2 August 2026 10:12 UTC](https://forum.intervals.icu/t/configurable-rolling-percentile-quantile-plot/130865/3 "2026-08-02T10:12:30Z")

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Thank you!  
Pretty sure I can create a formula to do exactly what I wanted.  
I didn’t even know that was possible.

Just in case anyone come here looking for something similar:

> [@Easy custom formulas on fitness charts](https://forum.intervals.icu/t/easy-custom-formulas-on-fitness-charts/123646):
>
> We (tx @ryandev ) have added support for custom formulas on custom charts on the /fitness page. These are simple math expressions and (hopefully!) easy for non-software developers to write. Here is a BMI chart: Choose “Custom Charts” → “Add” → “Chart” to add a new custom chart. Then do “Add Plot” and search for “Formula”: Click the little pencil under “Formula” on the table to exit the expression. Choose “Add Plot” to …

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