# Perspective Power Chart Axis dataFormat wont update

**URL:** <https://forum.inductiveautomation.com/t/perspective-power-chart-axis-dataformat-wont-update/115870>\
**Category:** Ignition\
**Tags:** perspective\
**Created:** [June 5, 2026, 7:51pm UTC](https://forum.inductiveautomation.com/t/perspective-power-chart-axis-dataformat-wont-update/115870 "2026-06-05T19:51:48Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![john.ackley](https://avatars.discourse-cdn.com/v4/letter/j/c6cbf5/32.png) [@john.ackley](https://forum.inductiveautomation.com/u/john.ackley)\
**Post date:** [June 5, 2026, 7:51pm UTC](https://forum.inductiveautomation.com/t/perspective-power-chart-axis-dataformat-wont-update/115870/1 "2026-06-05T19:51:48Z")

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I am trying to change the number of decimal points of a sub plot axis on a power chart. I have changed the dataFormat to four decimal precision, but the x-trace still only shows two decimal places. Thank you in advance for the help.

 ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/b/d/bd9618154b7d4f5d3b643fa75ffddb1497bc6000.png)

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**Author:** ![Programmatic](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/programmatic/32/70979_2.png) [@Programmatic](https://forum.inductiveautomation.com/u/Programmatic)\
**Post date:** [June 11, 2026, 2:17pm UTC](https://forum.inductiveautomation.com/t/perspective-power-chart-axis-dataformat-wont-update/115870/2 "2026-06-11T14:17:55Z")

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It looks like where you updated it is just for the axis display on the edge of the chart. If you go under interaction\>xTrace\>dataFormat you can change the format to a higher precision:

 ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/1/a/1af39ed9b940422daf129d002415fe1f4dc7bce2.png)

There's more info about it in the interaction.mode Properties in the manual here:

> **[Properties​ - Perspective - Power Chart | Ignition User Manual](https://www.docs.inductiveautomation.com/docs/8.3/appendix/components/perspective-components/perspective-chart-palette/perspective-power-chart#properties)**
>
> Most Properties have binding options. For more information on Bindings, see Types of Bindings in Perspective. This section only documents the Props Category of properties. The other Categories are described on the Perspective Component Properties...

 ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/8/a/8a194b1bb99c68357e8316ec91e93e68b3feb69b.png)

The screenshot is on version 8.3, but it looks like the manual says that xTrace dataFormat has been available since ~v8.1.2

Hope this helps!

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<div class="post-metadata">

**Author:** ![john.ackley](https://avatars.discourse-cdn.com/v4/letter/j/c6cbf5/32.png) [@john.ackley](https://forum.inductiveautomation.com/u/john.ackley)\
**Post date:** [June 15, 2026, 7:19pm UTC](https://forum.inductiveautomation.com/t/perspective-power-chart-axis-dataformat-wont-update/115870/3 "2026-06-15T19:19:13Z")

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Thank You! That got me what I need.