How to Dynamically Update Power Chart Range Brush Using Tag or DateTime Input in Perspective?

Ignition
,
1

I’m trying to update the Power Chart’s rangeBrush values dynamically in Ignition Perspective. The goal is to bind the rangeBrush start/end values to either a tag or a DateTime input component so that the Power Chart automatically updates when the values change.

However, I’m facing an issue:

  • When the session (client) is first opened, the binding does not update the Power Chart.

  • The rangeBrush updates only after manually refreshing the page.

  • Changing the tag or DateTime input does not immediately refresh the rangeBrush on its own.

Has anyone successfully updated the Power Chart rangeBrush dynamically using bindings?
Is there a recommended method to force the Power Chart to re-evaluate the rangeBrush without reloading the entire view?

2

You might have to implement a message handler that does self.refreshBinding on your bindings.

And call that message handler when you want to refresh those bindings.

3

I noticed this as well. It seems as though changes to the brushed ranges via the props don’t trigger a repaint of the chart. I noticed this with my trend viewer screen that allows saving and restoring charts. I wasn't able to get restoration of the brushed ranges to work. It’s a bug to me