# Show an operating range in the vision chart

**URL:** <https://forum.inductiveautomation.com/t/show-an-operating-range-in-the-vision-chart/63207>\
**Category:** Ignition\
**Tags:** vision\
**Created:** [August 19, 2022, 3:29pm UTC](https://forum.inductiveautomation.com/t/show-an-operating-range-in-the-vision-chart/63207 "2022-08-19T15:29:07Z")\
**Posts on this page:** 1\
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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:** [August 19, 2022, 5:44pm UTC](https://forum.inductiveautomation.com/t/show-an-operating-range-in-the-vision-chart/63207/2 "2022-08-19T17:44:29Z")

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In theory, something like this script to add a ValueMarker:

> [@Bar chart (report) static line](https://forum.inductiveautomation.com/t/bar-chart-report-static-line/18445/2):
>
> Untested, but you would need something like this in the chart configuration script: from org.jfree.chart.plot import ValueMarker marker = ValueMarker(123) #point on range axis to label marker.setLabel("Some Marker") chart.getPlot().addRangeMarker(marker)

But you want to use the IntervalMarker class instead:  
[https://www.jfree.org/jfreechart/api/javadoc/org/jfree/chart/plot/IntervalMarker.html](https://www.jfree.org/jfreechart/api/javadoc/org/jfree/chart/plot/IntervalMarker.html)

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