Marker Cluster: Point.update error and not able to be used

[codywsears]

Expected behaviour

Steps:

1. Hover over a point in a scatter series that is not clustered
2. The symbol changes when using the Point.update with a symbol change in the marker
3. The symbol for the marker changes back to the original on mouseOut

Actual behaviour

1. Hover over a point in a scatter series
2. The symbol does not change
3. The console outputs: "Highcharts marker-clusters module: Running Point.update when point belongs to clustered series is not supported."

Live demo with steps to reproduce

https://codepen.io/codywsears/pen/YzqPRaX

Product version

Highcharts v8.1.2

Affected browser(s)

Found in Chrome

[sebastianbochan]

Hi @codywsears,
Thank you for reporting.

FYI @wchmiel

[wchmiel]

This issue is not a bug. As you can read in the console the point can not be updated when a series is clustered. I will mark it for now as a feature request and check if it is possible to implement it.

[codywsears]

@wchmiel thanks for checking on this! It is ok that the clustered point is not able to be updated. However, would it be possible for a non-clustered point (one that is in a series that has clustering enabled) use the Point.update functionality?

[wchmiel]

@codywsears You're welcome! For now, this is not supported (updating a single point that belongs to the series that has clustered points). I will check and try to implement it, yet I can not give you any ETA.

[wchmiel]

Unfortunately, this feature will require a lot of changes in the core implementation of marker clusters (and also data grouping because it uses partially the same logic). So, for now, this feature will not be implemented.

As a workaround for a point updating in this use case you can use SVGElement.attr() to set for example a different fill color on mouse over a noise point. Demo: https://jsfiddle.net/BlackLabel/j6mbr71u/.