# Is there a way to monitor the tag trend in chart without enable "history" property

**URL:** <https://forum.inductiveautomation.com/t/is-there-a-way-to-monitor-the-tag-trend-in-chart-without-enable-history-property/73826>\
**Category:** Ignition\
**Tags:** ignition81, perspective, vision\
**Created:** [May 17, 2023, 7:04am UTC](https://forum.inductiveautomation.com/t/is-there-a-way-to-monitor-the-tag-trend-in-chart-without-enable-history-property/73826 "2023-05-17T07:04:41Z")\
**Posts on this page:** 6\
**Page:** 1

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**Author:** ![Lina\_Su](https://avatars.discourse-cdn.com/v4/letter/l/7ba0ec/32.png) [@Lina\_Su](https://forum.inductiveautomation.com/u/Lina_Su)\
**Post date:** [May 17, 2023, 7:04am UTC](https://forum.inductiveautomation.com/t/is-there-a-way-to-monitor-the-tag-trend-in-chart-without-enable-history-property/73826/1 "2023-05-17T07:04:41Z")

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Like indicated in the topic,  
There is a business requirement allow user to drag a tag from tag brower tree, and the history value of this tag will display in the chart.

I know easy chart can provide such functionality, but need enable the "history" property for this tag, in my case, the data is not required saved to DB. Only for user to view when he opens the monitor window.  
Is there a simple way to realize such function without too much script in vision & perspective ?

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**Author:** ![pturmel](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/pturmel/32/3295_2.png) [@pturmel](https://forum.inductiveautomation.com/u/pturmel)\
**Post date:** [May 17, 2023, 11:29am UTC](https://forum.inductiveautomation.com/t/is-there-a-way-to-monitor-the-tag-trend-in-chart-without-enable-history-property/73826/2 "2023-05-17T11:29:28Z")

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No, tags to not have any way to remember their trend except via history.

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**Author:** ![MMaynard](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/mmaynard/32/3366_2.png) [@MMaynard](https://forum.inductiveautomation.com/u/MMaynard)\
**Post date:** [May 17, 2023, 12:53pm UTC](https://forum.inductiveautomation.com/t/is-there-a-way-to-monitor-the-tag-trend-in-chart-without-enable-history-property/73826/3 "2023-05-17T12:53:08Z")

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With a dataset and a timer you could shift data into the dataset every x seconds and display that.  
But that will only be data that is available while the view/window is open and being viewed.

We did this a long time ago for quick dirty trends where we didn't want to have to historize every tag.

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**Author:** ![pturmel](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/pturmel/32/3295_2.png) [@pturmel](https://forum.inductiveautomation.com/u/pturmel)\
**Post date:** [May 17, 2023, 1:28pm UTC](https://forum.inductiveautomation.com/t/is-there-a-way-to-monitor-the-tag-trend-in-chart-without-enable-history-property/73826/4 "2023-05-17T13:28:36Z")

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> [@MMaynard](#):
>
> With a dataset and a timer

I included a function called `recorder()` in my [Simulation Aids module](https://inductiveautomation.com/moduleshowcase/module/automation-professionals-llc-simulation-aids) that does this in one package. It is **not** suitable for production environments.

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**Author:** ![Lina\_Su](https://avatars.discourse-cdn.com/v4/letter/l/7ba0ec/32.png) [@Lina\_Su](https://forum.inductiveautomation.com/u/Lina_Su)\
**Post date:** [May 17, 2023, 2:18pm UTC](https://forum.inductiveautomation.com/t/is-there-a-way-to-monitor-the-tag-trend-in-chart-without-enable-history-property/73826/5 "2023-05-17T14:18:43Z")

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Are you using easy chart to display the data ? Does it allow user to select multiple tags and display in one chart ?

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**Author:** ![pturmel](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/pturmel/32/3295_2.png) [@pturmel](https://forum.inductiveautomation.com/u/pturmel)\
**Post date:** [May 17, 2023, 3:18pm UTC](https://forum.inductiveautomation.com/t/is-there-a-way-to-monitor-the-tag-trend-in-chart-without-enable-history-property/73826/6 "2023-05-17T15:18:18Z")

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> [@Lina\_Su](#):
>
> using easy chart to display the data

Easy Chart can only display trends from a database or a historian (which is typically indirectly from a database). The Vision Classic Chart can display from any arbitrary dataset. Similar constraints apply to Perspective's Power Chart versus Time Series and XY Charts.
