# Trendline on a bar chart

**URL:** <https://forum.inductiveautomation.com/t/trendline-on-a-bar-chart/59063>\
**Category:** Ignition\
**Created:** [April 29, 2022, 5:42pm UTC](https://forum.inductiveautomation.com/t/trendline-on-a-bar-chart/59063 "2022-04-29T17:42:56Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![ricardo.ortolani](https://avatars.discourse-cdn.com/v4/letter/r/c68b51/32.png) [@ricardo.ortolani](https://forum.inductiveautomation.com/u/ricardo.ortolani)\
**Post date:** [April 29, 2022, 5:42pm UTC](https://forum.inductiveautomation.com/t/trendline-on-a-bar-chart/59063/1 "2022-04-29T17:42:56Z")

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I am trying to add a trendline (going up or down) on a bar chart. Does anyone have any idea on how to do this?

I used addRangeMarker to add a horizontal line, but I couldn’t get to make the line to have a up or down trend.

thanks,

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**Author:** ![paul-griffith](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/paul-griffith/32/37249_2.png) [@paul-griffith](https://forum.inductiveautomation.com/u/paul-griffith)\
**Post date:** [April 29, 2022, 6:00pm UTC](https://forum.inductiveautomation.com/t/trendline-on-a-bar-chart/59063/2 "2022-04-29T18:00:36Z")

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You might have better luck with a `CategoryLineAnnotation`: [CategoryLineAnnotation (JFreeChart 1.5.0 API)](https://www.jfree.org/jfreechart/api/javadoc/org/jfree/chart/annotations/CategoryLineAnnotation.html)