# \[TimeSeriesChart\] Y-Axis Resize Issue

**URL:** <https://forum.inductiveautomation.com/t/timeserieschart-y-axis-resize-issue/85727>\
**Category:** Ignition\
**Tags:** ignition81, perspective\
**Created:** [February 14, 2024, 10:55pm UTC](https://forum.inductiveautomation.com/t/timeserieschart-y-axis-resize-issue/85727 "2024-02-14T22:55:39Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![adam.haney](https://avatars.discourse-cdn.com/v4/letter/a/4bbf92/32.png) [@adam.haney](https://forum.inductiveautomation.com/u/adam.haney)\
**Post date:** [February 14, 2024, 10:55pm UTC](https://forum.inductiveautomation.com/t/timeserieschart-y-axis-resize-issue/85727/1 "2024-02-14T22:55:39Z")

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I am having an issue with resizing the Y-Axis of `TimeSeriesChart` when new datasets are written to the chart's `props.series[0].data` property.

**Issue**  
Ignition 8.1.21  
My `TimeSeriesChart` instances only rescale the Y-axis on mouse-over.

**Edit** It seems like the Y-Axis rescale issue may only be affecting `TimeSeriesCharts` whose dataset is returned from a `Named Query`, and that the charts receiving their dataset from `system.tag.queryTagHistory` may not have this issue. Some of the values from my `Named Query` can be null, so I set their value to zero before writing to the `props.series[0].data` property, but this doesn't explain the issue to me.

**Attempted Solutions**  
I left the `TimeSeriesChart.props.plots[0].axes[0].min` and `max` property blank, as the docs say this will trigger an auto-scale of the Y-Axis, but this also only adapts the rendered chart on mouse-over.

**Description**  
I am using a single `Flex Repeater` whose instances are dynamically changed based on navigation button clicks. The instances in the `Flex Repeater` are views that contain a `TimeSeriesChart`

When a button is clicked, a `Message` is sent whose payload parameterizes the custom properties of the `TimeSeriesChart`s.

Based on that payload, either a `system.db.runNamedQuery` or `system.tag.queryTagHistory` call is made, I do stuff with the returned dataset, then write to the `TimeSeriesChart.props.series[0].data` property.

I also write to the `TimeSeriesChart.props.plots[0].axes[0].min` and `max` property, because I have operator-set markers on the chart that may be outside the min/max of the dataset. I want the customer to be able to see that the charted variable is not within the high, low, target markers.

So on the first access of the page with this `Flex Repeater`, the `Flex Repeater` is rendered and then its instances are changed with further buttons.

I have tested all this stuff for a week and all of the data redirection for getting the proper datasets to the chart, updating chart labels, etc. works. It's just this issue where the chart will not re-size the Y-Axis until mouse-over.

Thank you for any assistance.

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<div class="post-metadata">

**Author:** ![adam.haney](https://avatars.discourse-cdn.com/v4/letter/a/4bbf92/32.png) [@adam.haney](https://forum.inductiveautomation.com/u/adam.haney)\
**Post date:** [February 20, 2024, 4:21pm UTC](https://forum.inductiveautomation.com/t/timeserieschart-y-axis-resize-issue/85727/2 "2024-02-20T16:21:08Z")

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Anything? Is this a known issue, based on other forum posts I have seen concerning this?