Highlight individual data points in charts

[Andre_Hennecke]

I’m wondering if there’s a way to highlight (for example, by changing the color) individual data points in a chart—either in Perspective or Vision.

What we’d like to do is call out points that are out of control, such as values that go above a warning or manufacturing limit. You can change the color of an entire line, but I haven’t found a way to highlight just specific points.
Maybe we can add a additional data series with only the out of control points in different colors and overlay the line or is there a way to add a style to individual data points?

Has anyone figured out a good approach for this in Ignition?

[lrose]

@Andre_Hennecke

I’m wondering if there’s a way to highlight (for example, by changing the color) individual data points in a chart—either in Perspective or Vision

This is possible in Vision. You may be able to use this post as some inspiration.

Change colour of item in Chart

Yes, it would be another series, however, because you are providing the renderer you can control this. There is no way to stop the execution, so you have to write the code in a way that this is not in play. Create the renderer class in the configureChart Extension function and then let the chart code call the renderer when it needs to. Add a Column of type Integer or Short (the chart will argue with you if you use another type such as boolean.) Then place this code in your configureChart ext…