# EasyChart: How to graph a realtime float?

**URL:** <https://forum.inductiveautomation.com/t/easychart-how-to-graph-a-realtime-float/108395>\
**Category:** Ignition\
**Tags:** vision\
**Created:** [July 11, 2025, 8:21pm UTC](https://forum.inductiveautomation.com/t/easychart-how-to-graph-a-realtime-float/108395 "2025-07-11T20:21:41Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![mdemaris](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/mdemaris/32/54639_2.png) [@mdemaris](https://forum.inductiveautomation.com/u/mdemaris)\
**Post date:** [July 11, 2025, 8:21pm UTC](https://forum.inductiveautomation.com/t/easychart-how-to-graph-a-realtime-float/108395/1 "2025-07-11T20:21:41Z")

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Hi all,

So far I am not finding the EasyChart very easy to work with.  
What I am trying to do:  
Take a random float tag and display it in real time, like a normal chart or graph. I set the random range to `1E-4` to `1E-5` on the tag provider program.  
I am using a `Tag Pens` dataset for this tag.  
I've tried a couple different aggregation modes, but they all give me a message in the console: `Invalid aggregation mode:` on said pen. I've tried `MinMax`, `Closest`, `Average`.  
I set the `Tag History Resolution` to `-1`.

All I seem to get is either a blank chart or a moving line that changes slope with every new value (per second).

  
The resolution used here is 300, but a -1 shows an empty chart.

I tried adding calculation pen, but it doesn't seem to do what I would like.

Any thoughts on getting a real time graph from a real time random tag?

thanks!

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**Author:** ![robertm](https://avatars.discourse-cdn.com/v4/letter/r/ea5d25/32.png) [@robertm](https://forum.inductiveautomation.com/u/robertm)\
**Post date:** [July 11, 2025, 8:23pm UTC](https://forum.inductiveautomation.com/t/easychart-how-to-graph-a-realtime-float/108395/2 "2025-07-11T20:23:15Z")

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How do you have said tag defined in the historical properties of the tag itself?

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<div class="post-metadata">

**Author:** ![mdemaris](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/mdemaris/32/54639_2.png) [@mdemaris](https://forum.inductiveautomation.com/u/mdemaris)\
**Post date:** [July 11, 2025, 8:58pm UTC](https://forum.inductiveautomation.com/t/easychart-how-to-graph-a-realtime-float/108395/3 "2025-07-11T20:58:00Z")

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As in History enabled? Yep, but I just realized the historical deadband was set too high. Ah, I see said the blind man. After adjusting the deadband down a few decimals, I now have a VERY crazy looking chart!

Thanks!